ads 2012 import and export designs

7/21/2019 ADS 2012 Import and Export Designs

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Advanced Design System 2002

Im port ing a nd E xport ing D esigns

February 2002


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Contents1 Introduction

Layout Export Considerations .................................................................................. 1-1

Available File Formats .............................................................................................. 1-2

2 Importing and Exporting Schematic and Layout Designs

Importing a Schematic.............................................................................................. 2-1

Exporting a Schematic ............................................................................................. 2-2

Importing a Layout.................................................................................................... 2-3

Exporting a Layout.................................................................................................... 2-7

Defining Layers......................................................................................................... 2-11

3 DXF Translator

Importing DXF (hierarchical) Files............................................................................ 3-1

Import DXF (hierarchical) Options...................................................................... 3-2Mapping DXF to ADS ......................................................................................... 3-7

Exporting DXF (hierarchical) Files............................................................................ 3-8

Export DXF (hierarchical) Options...................................................................... 3-8

Mapping ADS to DXF (hierarchical) ................................................................... 3-11

Exporting DXF (flattened) Files ................................................................................ 3-11

Export DXF (flattened) Options .......................................................................... 3-17

Mapping ADS to DXF (flattened)........................................................................ 3-20

4 EGS Archive Files

Importing EGS Archive Files .................................................................................... 4-1Import EGS Archive Options .............................................................................. 4-1

Mapping EGS Archive to ADS............................................................................ 4-2

Exporting EGS Archive Files.................................................................................... 4-2

Export EGS Archive Options.............................................................................. 4-3

Mapping ADS to EGS Archive............................................................................ 4-5

5 EGS Generate Files

Importing EGS Generate Files ................................................................................. 5-1

Import EGS Generate Options ........................................................................... 5-1

Mapping EGS Generate to ADS......................................................................... 5-2Exporting EGS Generate Files................................................................................. 5-2

Export EGS Generate Options........................................................................... 5-3

Mapping ADS to EGS Generate......................................................................... 5-4

6 GDSII Stream File Translator

Importing GDSII Files ............................................................................................... 6-3

Guidelines/Considerations.................................................................................. 6-4

Filenames Versus Instance Names.................................................................... 6-4


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Import GDSII Options......................................................................................... 6-5

Exporting GDSII Files............................................................................................... 6-6

Guidelines/Considerations.................................................................................. 6-6

Export GDSII Options......................................................................................... 6-8

7 Gerber Artwork Translator and Gerber Viewer

Limitations and Considerations ................................................................................ 7-1Gerber Command Format ........................................................................................ 7-1

Exporting Gerber Files ............................................................................................. 7-2

Gerber File Options ............................................................................................ 7-7

Translation Settings ............................................................................................ 7-8

Edit Apertures..................................................................................................... 7-10

View Mask .......................................................................................................... 7-14

View Gerber........................................................................................................ 7-15

Export Gerber Options ....................................................................................... 7-15

Using the Gerber Viewer .......................................................................................... 7-18Criteria for Viewing Gerber Files ........................................................................ 7-18

Launching the Viewer from a Layout Window .................................................... 7-18

Launching the Viewer During File Export ........................................................... 7-20

Loading a File to View ........................................................................................ 7-21

Gerber Viewer Menu Options ................................................................................... 7-25

Gerber Settings .................................................................................................. 7-30

Snap Settings ..................................................................................................... 7-31

Gerber Merge ..................................................................................................... 7-32

Layer Options ..................................................................................................... 7-33

Aperture.............................................................................................................. 7-35Gerber Viewer Keyboard Commands................................................................. 7-41

Configuring the Gerber Translator for Photoplotters................................................. 7-42

Vector Plotter Configuration................................................................................ 7-42

FIRE 9000 Photoplotter Configuration................................................................ 7-44

RS274X Output Configuration............................................................................ 7-46

Creating an Excellon Drill File from an ADS Layout ................................................. 7-47

8 HPGL/2 Files

Importing HPGL/2 Graphics Files............................................................................. 8-1

Import HPGL/2 Options...................................................................................... 8-1Exporting HPGL/2 Graphics Files ............................................................................ 8-2

Export HPGL/2 Options...................................................................................... 8-2

9 IFF Files

Importing IFF Files ................................................................................................... 9-1

Import IFF Options ............................................................................................. 9-1

Exporting IFF Files ................................................................................................... 9-4


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Export IFF Options ............................................................................................. 9-6

10 IGES Translator

Translator Description............................................................................................... 10-1

Importing IGES Files ................................................................................................ 10-2

Import IGES Options .......................................................................................... 10-2

Exporting IGES Files ................................................................................................ 10-2Export IGES Options.......................................................................................... 10-3

Overcoming Limitations of Other IGES Readers...................................................... 10-7

11 Mask Files

Importing Mask Graphics Files................................................................................. 11-1

Import MASK Options......................................................................................... 11-1

Exporting Mask Graphics Files................................................................................. 11-2

Export MASK Options ........................................................................................ 11-3

12 MGC/PCB FilesExporting MGC/PCB Files........................................................................................ 12-1

Export MGC/PCB Options.................................................................................. 12-4

Index


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7/162Layout Export Considerations 1-1

Chapter 1: IntroductionTra nsla ting CAD da ta betw een va rious systems ca n be diffi cult. Different C AD

syst ems ha ve different representa tions of da ta . For insta nce, some systems cont a in

th e concept of a hole a nd some do not. D ifferences in t ra nsla tion forma ts often ca use

da ta to be lost or tra nsformed.

I n Ad va n ced D es ig n S y st em , t r a n sla t i ng ph ys ica l d es ig ns is in it ia t e d fr om t h e la y ou

w indow using the Fi le > Impor ta nd Fi le > Expor tmenu comm a nds.The progra msimport /export t ra nsla tors ar e highly confi gura ble. E a ch tra nsla tor ha s associa ted

options t ha t you ca n set from t he Im port a nd Export dia log boxes. These options

contr ol how the tra nslat or w orks. For exa mple, with t he IG ES a nd G DS II forma t

flattenopt ion , a la y ou t ca n be t r a n sla t e d a s a fl a t , n on -h ier a r ch ica l d es ig n. S im ila r lyt he mergeoption for t hese forma t s crea tes t w o new polygons from t w o int ersecting

closed sha pes.Other options include a rc conversions, trea t ment of holes a nd t ext, a nd in t he lay ers

fi le, specifi ca tion of layer tr a nslat ion t a bles. The IG ES tra nslat or ha s th e grea test

number of options beca use IGE S is such a broa d sta nda rd. Syst em defaults a re

included wit h t he product a nd a re au toma tically used if no oth ers ar e specifi ed.

Tra nsla ting schema tic designs is initia ted from the ADS Ma inor Schematicw indowusing the Fi le > Impor ta nd Fi le > Expor tmenu comma nds. Simila r t o the Lay outtra nslat ors, ea ch schema tic tra nslat or ha s a ssociat ed options th a t control how th e

translator works.

Layout Export Considerations

B efore sta rt ing a lay out , you should consider how th e fi na l out put could a ffect t he

la yout process. D ifferent output form a t s impose different rest rictions. The

r es t rict ion s im pos ed by G D S I I a r e ver y d iffer en t fr om t h os e im pos ed by D XF, H P G L

Mask, or Gerber.

Wit h a l l expor t for ma t s , y ou m us t con sid er la y ou t u nit s a n d d a t a ba s e pr ecis ion . Th eunits a nd precision used in layout should ma tch those you w a nt in th e fi na l output.

U sua lly no problems are associat ed w ith tra nslat ing units th a t a re in the sam e

mea sur ement s yst em (such a s, mils to inches or cent imet ers to millimet ers).

However, round-of f er rors ca n occur when tra ns la t ing f rom metr ic-to-English units o

vice versa .


8/1621-2 Available File Formats

Introduction

Simila rly, no problem is associa ted w ith t ra nsla ting a less precise da ta ba se

resolut ion in t he progra m t o a more precise out put r esolut ion. H owever, th e reverse

process (such a s, 0.001 La yout t o 0.01 G D S II ) ca n result in loss of da t a .

Available File FormatsThe Importa nd Exportcomma nds ena ble you t o import a nd export fi les in a va rietyof different forma ts. You ca n import fi les t hrough Adva nced D esign S yst ems Ma in,Schematic, or Layoutw indow. All fi le export is curr ent ly done from t he AD S Layoutw indow w ith t he exception of Int ermediat e File Forma t (IFF) fi les. Ta ble 1-1shows

th e a va ilable fi le forma ts a nd th e individua l import /export options.

St eps for import ing a nd export ing th ese fi les a re out lined in Cha pter 2, Importing

a nd Exporting Schema tic a nd La yout D esigns.

Ta ble 1-1. Ava ila ble Forma t s a nd Im port /E xport Options

Available File Formats

and File Extensions

ADS Main

Window

ADS Schematic

Window

ADS Layout

Window

DXF (.dxf) - - Import/Export

EGS Archive (_a) - - Import/Export

EGS Generate (_g) - Import Import/Export

GDSII Stream (.gds) - - Import/Export

Gerber (.gbr) - - Export

Gerber Viewer (.msk, .gbr) - - Export

HPGL/2 (.hpg) - Import Import/ExportIFF (.iff) Import Import/Export Import/Export

IGES (.igs) - - Import/Export

Mask File (.msk) - Import Import/Export

MGC/PCB (.iff) - - Export

SPICE (.cir, .cki) Import Import -

Spectre (.scs) Import Import -

For detailed information on SPICE file import, refer to Importing a SPICE File in theADS Netlist Translator for SPICE documentation. For detailed information on Spectre file import, refer to Importing a Spectre File in theADS Netlist Translator for Spectre documentation.


9/162Available File Formats 1-3

DXF

The Dr a w ing E xcha nge Form a t (DXF) w a s developed by Aut odesk for it s Aut oCAD

product a nd is widely used to tr a nsfer geometr ic da ta bet w een syst ems. Like th e

m a s k fi le for m a t , it pr ovid es a s im ple g eom et r ic r epr es en t a t ion of d a t a . D XF fi les ca n

be t r ans fer r ed b etween P C-based or UN IX-b ased sys tems. For deta i ls, see C h a pt er 3DXF Tra nsla tor .

EGS (Archive/Generate)

Engineering G ra phics Syst em (EG S) forma t is a genera l gra phics forma t used for

ca pturing m a nua lly ent ered designs. EG S h a s been a pplied t o IC s, Micro-circuits,

Hybrids, a nd P C B oa rd design a pplica tions. Using this forma t, you ca n easily

excha nge da ta w ith other progra ms using EG S forma ts.

The layout portion of Adva nced D esign S yst em ha s a dopted m a ny of the primitivetypes a nd styles tha t a re pa rt of the EG S st a nda rd, but ha s a more enriched set of

ca pabilities th a t st ructure informa tion not representa ble in EG S. For exa mple, E G S

fi les ca nnot represent embedded a rcs.

Tw o va riat ions of the EG S forma t a re:

The Generateforma t is a fl a tt ened l ist of EG S primitives specifi ed in t heuser-defi ned un it space. N o add it iona l in for mat ion is supplied such as supplied

w ith t he Archive forma t.

The Archivefor mat is a h ier a r ch ica l ly or gan i zed lis t of E G S pr imit ives specifi edin the user-defi ned unit spa ce. Informa tion such a s dra w ing sha pes, lay out

units, da ta ba se precision, a nd gr id spacing is included.

For det a ils, see Ch a pter 4, EG S Archive Filesa nd Cha pter 5, EG S G enera te Files.

GDSII Stream

G DS II St rea m Forma t (Ca lma) is a n industry sta ndard for tra nsla t ing fina l ma sk

da ta to foundr ies. The Adva nced D esign S yst em read s G DS II versions 4.0 th rough

6.0 a nd w rites G DS II version 6.0.

U nlike oth er da ta forma ts, G DS II strea m forma t is bina ry. You cannot ea sily view or

ed it a st r ea m for ma t fi l e u sin g a t ext ed it or. Th is for ma t is ea s ily t r a nsla t ed bet w een

dif fer en t CAD sys tems because it r epr esen ts a h ighly r es t r ict ive da ta ty pe. However

t h e for ma t h a s a n um ber of s ig nifi ca n t lim it a t i on s; t h es e lim it a t i on s a r e d is cu ss ed in

Cha pter 6, G DS II S trea m File Tra nslat or .



Introduction

Gerber

G erber refers to various da ta input format s th a t G erber Scientifi c uses to drive its

photoplot t ers. The G erber form a t is used by photoplot t ers produced by oth er

ma nufa ctu rers a lso. Adva nced D esign S yst em support s va rious ty pes of G erber

ou tput via m a sk fi l es t o eit h er t h e G er ber or D XF t r a nsla t or. For d et a ils, see Chapte7, G erber Art w ork Tra nsla tor a nd G erber View er.

Gerber Viewer

G er ber View er a ppea r s a s a n export fi le opt ion . I t is n ot a fi l e for ma t , but is pla ced on

t he expor t fi l e m enu so you ca n open t he G er ber View er a t a n y t im e. I n a d dit ion , y ou

ca n a ccess t h e View er d ur in g a D XF or G er ber expor t (see Using the Ger ber Viewer

on pa ge 7-18).

You can use th e G erber Viewer t o view G erber or ma sk fi les t o help verify t hecorrectn ess of your da ta . Also, you can use th e G erber View er to confi gure ma sk fi le

da ta for photoplott ing.

HPGL/2

H P G L/2 out put is a subset of t he H P G L/2 print er/plot t er la ngu a ge. When crea t ing a

gra ph or chart in a nother t ool , you can w rite the gra phics da ta to a n H P G L/2 output

fi le, then import th e fi le into Adva nced Design Sy stem.

In Adva nced Design System, the HP G L da ta is tra nsformed int o forms a nd sha pestha t can be edited a nd ma nipulat ed like any other dra w ing. Additiona l text,

a nnota tion, sca ling or editing ma y be add ed. For deta ils, see Ch a pter 8, H P G L/2

Files.

IFF

The Int ermediat e File Forma t (IF F) is a n ASC II fi le with a simple, line-oriented

comma nd st ructure a nd a fa irly rich set of const ructs. This forma t is ma chine- a nd

a pplica tion-independent, t hus simplifying design da ta tr a nsfer.

IFF fi les a re used a s the excha nge mecha nism w hen tra nsferring designs betw een

Advanced Des ign Sy stem and th ir d-par ty E DA tools such as Mentor G r aphics Des ign

Architect a nd C a dence Ana log Art ist. For m ore informa tion a bout th ese fra mew ork

l inks, conta ct your Agilent Technologies sales representa t ive. For deta i ls , see Chapte

9, IF F Files.


11/162Available File Formats 1-5

IGES

Th e I n it ia l G r a p hics E xch a n ge S pecifi ca t i on (I G E S ) is a n a p pr oved AN S I s t a n da r d o

t he U.S. Depa rt ment of Comm erce (ANS I Y14.25M) t ha t is u sed extensively

th roughout t he comput er-a ided design and m a nufa ctu ring w orld. The IG ES forma t

ca n represent both mecha nica l an d electrica l design dat a in tw o a nd t hreedimensions.

B eca use IG ES is such a broa d sta nda rd, the government ha s at tempted to further

defin e a str icter sta nda rd of IG ES for t he tra nsfer of electrica l design dat a . This

sta nda rd is know n a s CALS specifi ca tion. The CALS specifi ca tion for IG ES is

offi cial ly conta ined in the mili tary specificat ion MIL-D-28000, D igi tal Repr esent ati onfor Communi cati on of Pr oduct D ata: IGES Appl i cati on Subsets.

The Adva nced D esign Sy stem support s version 4.0 and 5.0 IG E S forma ts. The

progra m rea ds a nd w rites IG ES CALS Level 1 (technica l illustra tion) a nd Level 3

(elect rica l/elect ronic a pplica t ions) fi les. Level 2 (engin eering d ra w ings) is not fu lly

supported since Level 2 is used primarily for drafting applications.

Even w ith t he CALS sta nda rds, CAD syst ems accept very different IG ES forma ts.

Although it is impossible to a ccomm oda te every forma t, y ou can use a number of

options to confi gure var ious IG E S t ra nsla tors, including tra nsla tors supplied by

Aut odesk, Ment or G ra phics, a nd C a dence. For d eta ils, see Cha pter 10, IG ES

Translator .

Mask File

Mask fi le for mat is a s imple fl a t (non-h ier a r ch ica l ) geometr ic descr ipt ion . The for ma

fa cilita tes t he tra nsfer of simple geometr ic da ta for fi na l ma sk processing. Only

geometr ic forms a re described in a ma sk fi le; simula tion dat a , element pa ra meters,

substra te defi nitions, an d hierarchy a re not included.

The Gerber a nd DXF tra nslat ors use the ma sk fi le forma t a s an intermediat e fi le

w hen converting da ta to G erber a nd D XF. For deta ils, see Ch a pter 11, Ma sk Files.

MGC/PCB

MG C/P CB fi les a re IFF fi les tha t a re used exclusively for Mentor G ra phics design

t r ans fer s. Although th is for mat is ava i lab le fr om the Advanced Des ign Sy stem lay ou

export menu only, you can t ra nsfer both schema tic an d la yout informa tion.

MG C/P CB fi les w rite t o a specifi c loca tion each a nd every t ime. When you select th is

forma t, t he fi lena me a nd loca tion of the IFF tra nsport is determined aut oma tica lly.



Introduction

SPICE

Simula tion P rogra m w ith Int egrat ed Circuit Em phasis (SP ICE ) is a simulat ion tool

used by engineers t hroughout th e w orld for simula ting circuits of a ll types. Since its

development a t t he Un iversity of Ca lifornia B erkeley, SP IC E ha s been

commercialized a nd modifi ed by a la rge number of vendors a nd a lso a dopted a ndmodifi ed by elect ronics compa nies for t heir own in -house use. Ma ny d esigners a nd

compa nies ha ve lar ge investm ent s in exist ing subcircuit s or device models described

by SP ICE netl ists tha t t hey wa nt t o use w ith the Adva nced Design System from

Agilen t Technologies.

For deta iled informa tion on S P IC E fi le import , refer to " I mport i ng a SPICE Fi le inth e AD S Netl ist Translator for SPI CEdocumentation.

Spectre

S pect re is a n E D A (E lect ronic D esign Aut oma t ion) t ool produced by Ca dence D esign

Sy stems, Inc. Spectr e is used by engineers t hroughout th e world for simula ting

circuits of all ty pes. Many designers a nd compa nies ha ve la rge investm ents in

existing subcircuit s or device models described by S pectr e netlists t ha t th ey wa nt to

use w ith t he Adva nced D esign S yst em (AD S ) from Agilent Techn ologies.

For d eta iled informa tion on S pectr e fi le import , refer t o " I mport i ng a Spectr e Fi le inth e AD S Netl ist Tr anslat or for Spectr edocument a tion.


13/162Importing a Schematic 2-1

Chapter 2: Importing and ExportingSchematic and Layout DesignsThis cha pter provides informa tion on importing a nd export ing schema tic a nd lay out

fi les a s w ell a s how t o use the Adva nced Design S ystem La yer Editor.

Importing a Schematic

In Adva nced Design S ystem, you can Import a Schema tic in t hese forma ts:

D XF

E G S Ar ch ive For ma t

E G S G en er a te For ma t

G erber

G er ber View er

H PG L/2

IFF

IG E S

Mask F ile (.msk) MG C/P CB

S P IC E (S ee I mport i ng a SPICE Fi lein the ADS Netl ist Translator for SPICEdocumentation.)

S pect r e (S ee I mpor t i ng a Spectr e Fi l ein the ADS Netl ist Tr anslat or for Spectr edocumentation.)

The pr ocedur e for impor t ing each for mat is gener a l ly the same, however the ava i lab l

options differ. For options rela ting t o a pa rt icula r fi le forma t, see the a ppropriat echapter.

To import a schema t ic design:

1. Open a project a nd choose File > Import. The Im port dia log box a ppea rs.

2. Select th e a ppropriat e fi le forma t from t he File Type drop-down list.


14/1622-2 Exporting a Schematic

Importing and Exporting Schematic and Layout Designs

3. To defi ne options for th e import ed fi le, click th e More Optionsbut t on. The

Import Options dia log box appea rs.

Note The progra m t ra nsla tors a re cont rolled by tr a nsla tor options fi les. A

syst em-w ide options fi le exists for each t ra nsla t or. These fi les ca n be found in

th e $H P EE SOF _DI R/confi g d irectory. The defa ult system fi le is a ut oma tically

rea d w hen y ou click More Options in t he Im port dia log box (unless a local

options fi le a lrea dy exists in t he curr ent pr oject d irect ory ). When you ma ke

ch a n ges in t h e opt ion s d ia l og box a n d click OK, a loca l copy of t he opt ion s fi l e i

w rit t en to th e curr ent project d irect ory.

4. To specify the pa th a nd fi lena me of the fi le you wa nt to import , click Browse.

5. Double-click as needed to loca t e the d ir ector y con ta in ing the des ign . B y defau l t

a ll fi l es a r e list ed t ha t h a ve t he fi le suffi x a ppr opr ia t e for t he ch osen fi l e for ma

6. Select t he design you wa nt to import a nd click OK. You a re return ed to the

Import dia log box an d th e selected fi lena me a ppea rs in th e fi eld labeled ImporFi l e N ame (Sour ce).

7. Wh er e a p plica b le, t y pe a n ew n a m e for y ou r im por t ed d es ig n in t h e New DesignN ame (Desti nat i on)fi eld.

Note For certa in fi le types, the tra nslat or uses the existing fi lena me todetermine the new design na me.

8. Click OKt o import th e design a nd dismiss t he Import dia log box.

Exporting a Schematic

In Adva nced Design S ystem, you can Export a Schema tic in t his forma t:

IFF

The procedure for export ing IF F fi les is the sa me a s t he import , but t he a va ilable

options differ. For options r ela ting to t he IF F fi le forma t, see IFF Files on pa ge 9-1

To export a schema t ic design:

1. Open your design a nd choose File> Export. The E xport dia log box appea rs.


15/162Importing a Layout 2-3

2. Select I FFfi le form a t from t he File Type drop-down list.

3. To set export opt ions, click t he More Optionsbut t on. The E xport Options dia log

box a ppear s.

4. Ch a nge options a s needed an d click OK.

5. To specify a pa t h for t he export ed fi le, click Browse.

6. D ouble-click a s needed to locat e th e direct ory for th e export ed design. B y

d efa u lt , a ll fi l es a r e list ed t h a t h a ve t h e fi l e su ffi x a ppr opr ia t e for t h e ch osen fi l

format .

7. Click OK.

8. Ty pe a n ew fi l en a me in t h e E xpor t d ia log box, follow in g t h e pa t h , a n d click OK

The fi le is w rit t en to th e specifi ed direct ory.

Importing a Layout

In Adva nced Design Sy stem, you ca n import fi les in these forma ts:



G D S II S t rea m For ma t

H PG L/2

IFF

IG E S

Mask F ile (.msk)

The pr ocedure for impor t ing each for mat is the same, b ut the ava i lab le opt ions d if fer

For options relat ing to a pa rt icula r fi le forma t , see the a ppropria te cha pter.

To import a la yout fi le:

1. I n t h e Ad va n ced D es ig n S y st em la y ou t w in dow, ch oos e File > Import t o open t h

Im port dia log box.


16/1622-4 Importing a Layout


2. I n t h e File Typefi eld, click th e ar row in t he right -ha nd corner t o displa y a

drop-dow n list of ava ilable forma ts. Select t he forma t y ou w a nt to import .

3. Click the More Optionsbut ton t o defi ne th e options for your selected forma t.

Note E a ch forma t h a s its own set of import options. Refer to the a ppropria techa pter in th is book.

4. Click Define Layers t o set t h e la y er opt ion s. For in for ma t i on on t h e L a y er E d it or

see Defi ning La yers on pa ge 2-11. Close the La yer E ditor dia log box.

5. In th e Import Opt ions dia log box, click OKto save your settings a nd return t o

th e Import d ia log box.


17/162Importing a Layout 2-5

6. I n t h e Import File Name (Source)fi eld enter t he full pat h of th e source fi le.

Alt erna t ively, click Browset o open th e Import File Select ion dia log box a nd

loca te t he fi le you w a nt . After loca ting th e fi le, click OKt o a ccept t he select ion

a nd retur n t o the Im port dia log box. The a ppropriat e suffi x (.dsn) is a ppended

to the fi lena me a utomat ica lly.

7. In t he New Design Name (Destination) fi e ld , en t er t h e fu ll d est in a t ion pa t h a n d a

na me for t he new fi le. Altern a t ively, you can click Browset o open t he D esign

F ile S elect ion d ia l og box a n d loca t e t h e d es t in a t ion pa t h . Aft er loca t i ng t h e fi le

click OKt o accept th e select ion a nd retur n t o the Im port dia log box. The

a ppropria te suffi x is a ppended t o the fi lter a utoma tica lly.


18/1622-6 Importing a Layout


Note New Desi gn N ame (Desti nat i on)can not be specifi ed for E G S ArchiveForma t , G DS II S tream Forma t , IFF, or IG ES fi les .

8. In t he Layers File Name fi eld, ent er t he full pa t h a n d na m e of t he la yers fi le t o be

r efer en ced d ur in g im por t . I f t h e n a m e y ou en t er d oes n ot exist , a .la y fi l e w ill be

creat ed using t he informa tion defi ned in the L ayer Ed i tor.

NoteI f t he import results in changes to the layers tha t you ha ve defi ned, then

those updat es are w ritt en to the custom layers fi le. I f t he custom layers fi le is

defin ed as non-w rita ble, then a wa rning is generat ed.

Altern a t ively, you can click Browseto open th e La yers File Select ion box a nd

loca te t he pat h a nd fi le na me. After loca ting t he fi le, click OKt o a ccept t he

selection a nd ret urn t o t he Import d ia log box. The a ppropria t e suffi x (.lay ) is

a ppended t o the fi lena me a utoma tica lly.


19/162Exporting a Layout 2-7

The specifi ed layers fi le cont a ins the la yer defi nition from t he fi le you ar e

importing.

Note L ayers Fil e N ameca nn ot be specifi ed for H P G L/2, IF F, or Ma sk fi les.

9. Click OK t o a ccept t h e s elect ion s a n d s t a r t t h e im por t pr oces s. On e or m or e fi le

ma y be creat ed.

Exporting a Layout

In Advanced Design Syst em, you ca n export fi les in th ese forma ts:

D XF



G D S II S t rea m For ma t

G erber


20/1622-8 Exporting a Layout


H PG L/2

IFF

IG E S

Mask F ile (.msk)

MG C/P CB

The pr ocedur e for expor t ing each for mat is the same, bu t the ava i lab le opt ions d if fer

For options relat ing to a pa rt icula r fi le forma t , see the a ppropria te cha pter.

Note G erber View er a ppears a s a n export fi le option. I t is not a fi le forma t, but is

pla ced on t he export fi le menu so you can open t he G erber View er a t a ny t ime. In

a ddition, you can a ccess the Viewer du ring a DXF or G erber export (see Using the

G erber Viewer on pa ge 7-18).

To export a la yout fi le:

1. In t he Adva nced Design Sy stem la yout w indow cont a ining your design, choose

File >Export. The E xport dia log box appea rs.

2. I n t h e File Typefi eld, click th e ar row in t he right -ha nd corner t o displa y a dropdow n list of ava ilable forma ts. Select t he forma t you wa nt t o export .

3. Click the More Optionsbut ton t o defi ne th e options for your selected forma t.


21/162Exporting a Layout 2-9

Note E a ch forma t h a s its own set of import options. Refer to the a ppropria te

cha pter in th is book.

4. Click Define Layers t o set t h e la y er opt ion s. For in for ma t i on on t h e L a y er E d it or

see Defi ning La yers on pa ge 2-11.

5. In th e E xport Options d ia log box, click OKto save your settings a nd return t o

t he Export dia log box.

6. In t he New File Name (Destination) fi e ld en t er t h e fu ll pa t h of t h e d est in a t ion fi l e

Alt erna t ively, click Browset o open t he E xport File Select ion d ia log box. Aft er

loca t ing the dest inat ion directory, cl ick OK t o a ccept t h e select ion a n d r et ur n t o

th e Export dia log box. E nt er a fi lena me. The a ppropria te suffi x is a ppended t o

the fi lena me aut oma tica lly.


22/162


23/162Defining Layers 2-11

Defining Layers

U sing the Advan ced Design S ystem La yer Editor (M ore Opt i ons > Define Layer s) inth e Import or E xport dia log box, you can defi ne design la yers a nd a dd, delete, or

rea rra nge la yer priority. The cont ents of t his dia log box cha nge t o refl ect th e lay er

a ssignments a ssocia ted w ith t he open design. For informa tion on t he defi ning lay ersusing t he ADS La yer E ditor, refer t o L ayer Ed i tor in the ADS Layout manual .
http://../layout/lo02.pdfhttp://../layout/lo02.pdf


24/1622-12 Defining Layers



25/162Importing DXF (hierarchical) Files 3-1

Chapter 3: DXF TranslatorThe D XF t ra nsla tor ena bles you t o convert ADS designs into Aut oCADs D XF fi le

for ma t a s w ell a s con ver t D XF fi l es in t o AD S d esig ns. D XF is a ver y sim ple fi l e for ma

a nd can be rea d by most a ny CAD progra m t ha t supports DXF. Advan ced Design

S yst em supports im port from a nd export t o Aut oCAD versions 12, 14, a nd 2000.

H ow you wa nt to use DXF outputincluding la yer num bering, use of holes, a nd

polygon sha pesshould be considered before beginning your la yout d esign. Set t ing

u p t h e pr oper la y ou t r ules in AD S ca n sa v e a lot of t im e in g en er a t in g a ccept a ble D XF

out put . For specifi c considera t ions or limita t ions, consult y our AutoCAD

documentation.

Adva nced Design Syst em provides tw o different D XF tra nsla tors, a hiera rchica l

tra nsla tor and a fl a t t ened tra nsla tor. The DXF (hi er ar chi cal)t ra nsla tor is a

bidirectiona l tra nslat or t ha t supports both full hiera rchy a nd a ll la yer separa tion.The DXF (flattened)tr a nsla tor support s export only w ith limited capa bility.

Importing DXF (hierarchical) Files


options differ. For a st ep-by-st ep t ut orial on import ing a la yout fi le, refer to

Importing a La yout on pa ge 2-3. For specifi c import options rela t ed to import ing

DXF fi les, refer t o Import DXF (hiera rchica l) Options on pa ge 3-2. For informa t ionon ma pping DXF fi les to EG S Archive fi les to ADS fi les, refer to Mapping D XF to

ADS on page 3-7.

In order t o import a DXF fi le, you must use theDXF (hier archi cal)t r a ns la t or asopposed t o th e DXF (flattened)tr a nsla tor. When import ing fi les using th e DXF(hierarchical)tra nsla tor, the progra m fi rst a ccesses the D XF fi le. This fi le is thentra nslat ed into EG S Archive fi le forma t a s show n in Figure 3-1.The fi le ca n t hen be

opened up in an Adva nced D esign S yst em La yout w indow.

Figure 3-1. DXF (hiera rchica l) B lock Dia gra m

eg s

archive

dxf2egs

egs2dxf

D XF

AutoCAD

or

Mechanical

CAD

Advanced

Design

System


26/1623-2 Importing DXF (hierarchical) Files

DXF Translator

Import DXF (hierarchical) Options

This section describes t he defi na ble options a va ilable for importing fi les in t he D XF

hiera rchica l format .

Fi le > Import > DXF (hi er ar chi cal) > M or e Opti ons

The I mpor t DXF (hi er archi cal) Opt ionsdia log box ena bles you to specify Un i t Conversion, Attr ibutes, Ar c Extr apolat iona nd Layerst o cont rol th e import of DXFforma t fi les.



Unit Conversion

U nit conversion mu st be specifi ed for both t he DXF fi le a nd E G S Archive fi le. The

AutoCAD Uni ts(D XF fi le) a nd ADS Un i t s(E G S Archive fi le) drop-down menuselections displa y t he a va ila ble unit s. These unit s a re described in Ta ble 3-1.

AutoCAD Units

S pecifi es the D XF fi les unit s. This informa t ion is notincluded in t he D XF fi le. Thedefa ult is mi l.

ADS Units

Specifi es th e EG S Archive fi les un its. The defa ult is mi l.

AttributesThe At t ribut es sect ion ena bles you t o set a n a ut o scale a nd/or t he a bility t o link

zero-w idt h element s.

Auto Scale

Th e Au to S ca le a t t r ibu t e is u sed t o a u t om a t ica lly sca le ea ch len gt h in t h e D XF fi l e t o

th e specifi ed AD S unit s. The defau lt is a ctive.

Link Zero-Width Elements

The Link Zero-Widt h E lement s a t t ribut e is used t o merge line segment s int o

polylines or polygons. (A polygon is formed if t he polylines form a closed object.)

Ta ble 3-1. Ava ila ble U nit s

Unit Meaning

um micrometer

mm millimeter

cm centimeter

mil mils

in inches



DXF Translator

NoteIn order for th e DXF Tra nsla t or t o merge line segment s int o polylines or

polygons, each a dja cent line segment must sharea comm on endpoint (overla pendpoints).

This fea t ure is especia lly useful wh en sending da ta to AD S Momentum , beca use

Moment um ca n only mesh a nd simu la te bounded elements. The defau lt is a ctive.

For more informa tion on Momentum mesh a nd simula tion, refer to M esha ndSimulat ionin the ADS Momentum ma nua l.
http://../mom/mom05.pdfhttp://../mom/mom06.pdfhttp://../mom/mom06.pdfhttp://../mom/mom06.pdfhttp://../mom/mom05.pdf



Arc Extrapolation

The Arc Ext ra pola tion section ena bles you t o optimize a rcs for a par ticular

application.

Arc Resolution (in degrees)

Th e Ar c R es olu t ion d efi n es t h e a r c seg men t in d eg rees. Th e low er t h e va l ue of t h e Ar

Resolut ion, t he smoot her t he a rc. The defa ult va lue for Arc Resolut ion is 5 degrees.

Figur e 3-2. Arc Resolut ion

Arc Sag Distance

The Arc Sa g helps to compensa te for t he tr ia ngle fla t ca used by each of th e a rc

segments. By w orking w ith t he dimension between the fl a t a nd t he peak of the a rc,

t h e a r c becom es g ra d u a lly s moot h er. Th e d efa u lt va l ue for Ar c S a g D is t a n ce is 0. Th

units for Arc Sa g dista nce are defi ned in the Uni t Conver si onsection.

Figure 3-3. Arc Sa g Dista nce

Note U se Ar c Resol ut i ona nd Ar c Sagt ogether for optimum results.

Layers

When import ing la rge DXF fi les, you can sa ve valua ble comput a tion time by

including only specifi c la yers. The follow ing fi elds ena ble you t o select pa rt icula r

lay ers tha t you wa nt t o include in your import . In order to obta in informa tion about

th e DXF fi les layers, ADS sca ns th e DXF fi le a nd st ores the layer informa tion in a

20 deg.



DXF Translator

. lyrfi le of the sa me na me. I f no DXF fi le wa s specifi ed in t he Importdia log box, theLayersoptions a re left desensitized. I f a DXF fi le wa s entered a nd ADS ha s a lrea dycrea ted a . lyr fi le for it, th e list of layers is aut oma t ica lly displa yed in the Inc ludeLayer(s)fi eld. I f a D XF fi le w a s ent ered but AD S ca n not fi n d a .lyr fi le for it , no la yera re displayed and t he Sear ch for L ayer sbut t on becomes a ctive.

Include Layer(s)

This fi eld displa ys a ll of the la yers found w ithin t he DXF fi le. From t his list, you ca n

select specifi c la yers t o include w hen import ing t he fi le. If no specifi c la yers a re

selected, ADS w ill import a ll la yers by defau lt.

Select All / Deselect All

Click t he Select A l lbut t on t o select ALL la yers for import . Click th e Desel ect Al lbut t on to deselect ALL la yers for import .

Search for Layers

I f ADS ca nnot fi nd a . lyr fi le w ith t he same na me as t he import fi le, this butt on

becomes a ct ive. Clicking this butt on causes th e program to sca n t he DXF fi le a nd

produce a . lyr fi le cont a ining informa tion a bout th e fi les lay ers. Once the .lyr fi le is

creat ed, the I nclu de L ayer (s)fi eld is upda ted w ith a ll of the layers found w ithin theD XF fi le, t he Search for L ayersbu t t on becom es d es en sit ized , a n d y ou a r e n ow a b le t ochoose specifi c lay ers t o include in your im port .

Note I f AD S ha s a lrea dy crea t ed a .lyr fi le for a pa r t icula r D XF fi le, a n d t he D XF fi le

is lat er modifi ed, delete t he old .lyr fi le before a t tempt ing t o import only cert a in

layers of the new DXF fi le.



Mapping DXF to ADS

Ta ble 3-2represent s t he ma pping of DXF (hiera rchica l) fi le sha pes t o EG S Archive

fi le sha pes.

Ta ble 3-2. Ma pping of DXF File Sh a pes t o ADS File Sha pes

DXF (hierarchical)Advanced Design System LayoutEquivalent

Line with width = 0 Polyline

Line with width > 0 Path

Polygon with width = 0 Polygon

Polygon with width > 0 Polygon with cutline on longest segment

Rectangle with width = 0 Rectangle

Rectangle with width > 0 Polygon with cutline on longest segment

Circle with width = 0 Circle

Circle with width > 0 Polygon with cutline to the right

Arc with width = 0 Polyline

Arc with width > 0 Polygon


32/1623-8 Exporting DXF (hierarchical) Files

DXF Translator

Exporting DXF (hierarchical) Files

When export ing fi les using t he DXF (hi er archi cal)tra nslat or, the progra m fi rstcreat es an intermedia te E G S Archive fi le. This fi le is t hen tra nslat ed into DXF

forma t a s show n in Figure 3-1.

To export D XF (hier a rchica l) fi les:

1. Follow th e steps a s out lined in Exporting a La yout on page 2-7. For a va ilable

opt ions (a ccessed v ia M or e Opti onsin t he E xport dia log box), see Export DXF(hiera rchica l) Options on pa ge 3-8.

2. Aft er clicking OKin th e Export dia log box, the tr a nsla tor converts y our ADS

La yout t o EG S Archive forma t, t hen tra nslat es the EG S Archive fi le into DXF

forma t a s show n in Figure 3-1. Once in D XF fi le forma t, t he fi le is ava ilable foruse in Aut oCAD or ot her Mecha nica l CAD sy st ems.

Export DXF (hierarchical) Options

The Expor t DXF (hi er ar chi cal) Optionsdia log box ena bles you t o set Attr ibutesa ndH ole Format. This dia log a lso provides a ccess to t he L ayer Ed i tor.


33/162Exporting DXF (hierarchical) Files 3-9

Attributes

The Attr ibutessection enables you t o select va rious design a tt ributes in t hetra nslat ion. All at tr ibutes a re deselected a s t he defa ult .

All Filled

When Al l Fi l ledis selected, a ll da ta is tr a nsferred a s fi lled. This option is deselected

a s the defaul t .

Auto Merge

When Auto M ergeis select ed , a l l sh a pes for ev er y m a s k la y er t h a t in t er sect or over la pa re merged. This option is deselect ed a s th e defa ult .

Flatten All

When Fl at ten Al lis selected, a ll levels of hierar chy a re a ut oma tically removed a nd asingle fl a t design is export ed. There a re no references from t he t op-level str uctur e to

any other s t ructur e in the des ign. This opt ion is useful when y our pos t -pr ocessor doenot support or correctly t ra nsla te hiera rchy in EG S Archive fi les. B ut bewa re: if a

substru ctu re wa s insta nced more th a n once, selecting t his option ca n substa nt ia lly

increa se the size of th e fi le. This opt ion is deselected a s th e defau lt.

Flatten Components


34/1623-10 Exporting DXF (hierarchical) Files

DXF Translator

When Fl att en Component sis selected, a ll par a meterized component s a re fla tt ened.This opt ion is deselect ed a s t he defa ult .

Generate R14 Output

When Generate R14 Ou tpu tis selected, a n AutoCAD version R 14 da ta ba se is

generat ed. This opt ion is deselected a s t he defa ult.

Paths as Polygons

When Path s As Pol ygonsis selected, t he design pa th s or t ra ces ar e export ed a spolygons. This should be selected for t he follow ing condit ions:

P a t hs or t ra ces h a ve m it ered or cur ved cor ner s t ha t n eed t o be pr eserved in t he

translat ion.

The EG S Archive fi le ha s pa ths wi th endpoint types other tha n flushtha t need

to be preserved in th e progra m da t a ba se.This opt ion is deselect ed a s t he defa ult .

Hole Format

The HoleFormatsect ion en a bles y ou t o d efi n e h ow t h e t r a nsla t or d ea ls w it h h oles ina design.

Holes As Polygons

When H ol es As Pol ygonsis selected, holes are converted into polygons. When HolesAs Pol ygonsi s notselected, polygons w ith holes a re tr a nsla ted a s single-segmentpolygons, th e fa l se edgesegment becoming pa rt of th e polygon.

Note S om e s ys t em s m a y n ot be a b le t o t oler a t e t h is t y pe of com plex poly gon . For t h ese

sy st em s, m a ke cer t a in t h a t H oles As Polygonsis selected. This opt ion is deselectedathe defa ult .

Holes As Cutlines

When H ol es As Cut l i nesis select ed, holes a re convert ed int o cut lines. This option isselected a s th e defa ult.

Preserve Holes

This opt ion is not ava i lab le for DXF (hierarch ica l) Expor t . This opt ion is desens it i zed

a s the defaul t .


35/162Exporting DXF (flattened) Files 3-11

Define Layers

Clicking th is butt on invokes the La yer E ditor. For informa tion on t he La yer E ditor,


Mapping ADS to DXF (hierarchical)The DXF fi le crea ted by t he DXF (hi er ar chi cal)tr a nsla tor is as simple as possible soth a t a s ma ny D XF parsers, even primitive ones, ca n rea d t he fi le. When export ing a

layout in DXF forma t, a very simple hea der is creat ed with a n entry for each layer

d efi n ed in t h e E G S Ar ch ive fi le. Th e D XF t r a n sla t or per for m s t h e follow i ng m a ppin g

betw een E G S Archive a nd D XF fi les.

Exporting DXF (flattened) Files

When export ing fi les using t he DXF (flattened)tra nslat or, the progra m fi rst crea tesa n intermedia te ma sk fi le. This fi le is then tra nslat ed into DXF forma t a s show n in

Figure 3-4.

Ta ble 3-3. Hiera rchica l D XF Out put

EGS ArchiveEntity DXF Entity Comment

Line zero-width closed polyline The difference between closed filled andclosed empty is lost.

Polygon zero-width closed polyline

Line open zero width polyline

Circle circle The difference between circle and holeis lost.

Rectangle circle

Polygon layer nameLine point Any bad mask entity (one with zero area

or length) is mapped to a point.


36/1623-12 Exporting DXF (flattened) Files

DXF Translator

Figure 3-4. DXF (fl a tt ened) B lock D iagra m

For informa tion on t he Ma sk File forma t, refer to Ma sk File on pa ge 1-5a nd

Ch a pter 11, Ma sk Files.

To export D XF (fl a t t ened) fi les:

1. Follow th e steps a s out lined in Exporting a La yout on page 2-7. For a va ilable

opt ions (a ccessed v ia M or e Opti onsin t he E xport dia log box), see Export DXF(fl a tt ened) Options on pa ge 3-17.

2. Aft er clicking OKin th e Export dia log box, the follow ing w indow a ppea rs:

Advanced

Design

System

AutoCAD

or

MechanicalCAD

Ma sk File D XF Filemask2dxf



U nder t he hea ding Acti vated Modu l es, you w ill see the entry M ask to DXF. The

DXF t ra nsla tor converts your design int o a ma sk fi le before out putt ing it in DXF

format .

Keep H i storyis select ed by defa ult . When t his option is select ed, th e preferencesy ou specify a r e sa ved a n d used a s t he d efa u lt for fut ure t ra n sla t ion s. I f y ou do n o

w a nt your sett ings sa ved, deselect t his option.

3. Click OKt o proceed. The Mtools Log w indow a nd D XF tr a nsla tor int erface

appear.

4. Verify tha t t he Mtools Log cont a ins th e correct informa tion, editing a s

necessa ry. To dismiss t he log w ind ow, click OK.



DXF Translator

5. In the DXF tra nsla tor window, the M ask F i l esa nd Output DXF Fi l epa t hsshould be set appr opr ia te ly. I f not , change the pa ths as des ir ed . (C lick Browse t

view your dir ect ories.)



6. Set the DXF L in e Typea s desired. Polyl ineis the defa ult .

You can configur e the t r ans la t or to use either lines or poly lines when build ing each

ma sk fi gure. The ad va nt a ge of using polylines is tha t a ll segments forming t he

fi gure a re connected into a single group. However, a few non-Aut oCAD progra ms

ma y not r ea d polylines corr ect ly.

Though lines a re eas ier to edit , we recomm end t ha t y ou use polylines.

Note You ma y view t he Mtools Log a t a ny t ime by clicking the DXFt a b in the

tra nslat or interface.

7. Set Scal e Factora s desired. The defa ult va lue is 1.000000.

Th e D XF ou t pu t ca n be m ult iplied by a s ca l e fa ct or. Th is fea t u r e is u sefu l w h en t h

m a sk fi l e u nit s a r e r epr esen t ed in m ils, bu t t h e D XF fi l e u nit s n eed t o be in in ch es



DXF Translator

B y sett ing a sca le fa ctor of 0.001, each lengt h in t he ma sk fi le is mult iplied by

0.001 and effectively scaled to inches.

8. To invoke th e G erber Viewer a nd view t he ma sk fi le, click View Mask. The

Gerber Viewer window appears.



The Ger ber Viewer pr esen ts a number of v iewing opt ions. For deta i ls, see Chapte

7, G erber Art w ork Tra nsla tor a nd G erber View er.

9. When you a re fi nished view ing th e fi le, choose File > Exit Xgrbvu to exit t he

G erber Viewer. You ma y re-invoke t he Viewer a ny t ime prior t o exit ing t he

tr a nsla tor interfa ce by clicking View Mask.

10. To export t he D XF fi le, click Translate. A dialog briefly a ppears sta ting tha t t he

ma sk fi le is being converted int o DXF forma t .

11. When t he tr a nsla tion is complete, the Mt ools Log a ppea rs, deta iling t he DXF

fi le informa t ion. To exit t he log win dow, click OK.

12. To exit t he DXF t ra nsla t or wind ow, click Exit.

The export process is now complet e.

Export DXF (flattened) Options

The Export DXF (flattened) Opti onsd ia l og box en a bles y ou t o d efi n e Un i t sa nd Scaleperform la yer defi nition, set a n Etch Factora nd M iter A nglea nd set Attr ibutesa ndH ole Format.



DXF Translator

Units

These a re the unit s th a t t he DXF fi le w ill be writ t en in. You ma y select from th e

following options: same, mi l, inch, um, mm, cm. The defa ult is same. When samei sselect ed , t h e d esign is w r it t en in t h e sa m e u nit s t h a t a r e st or ed in t h e d esign fi l e. Fo

more inform a t ion on choosing la yout un its, refer to Sett i ng Uni ts/ Scale Factor s inth e Adva nced Design Sy stem Layoutmanua l.

Scale X, Scale Y

The D XF out put ca n be mu ltiplied by a sca le factor. This feat ure is useful wh en t he

m a sk fi l e h a s u nit s of m ils (com mon in m icr ow a ve d esig n) a n d t h e D XF fi l e is in u nit

of in ch es. B y set t in g a sca le fa ct or of 0.001, ea ch len gt h in t h e m a sk fi l e is m ult iplied

by 0.001 a nd effectively sca led t o inches.

The defa ult va lue for both Scal e Xa ndScal e Yis 1.0.

Define Layers

Clicking th is butt on invokes the La yer E ditor. For informa tion on t he La yer E ditor,


Layers Include, Layers Exclude

These but t ons ena ble you t o specify la yers t o eith er include or exclude.

I n clu de - expor t s in for ma t i on on ly fr om la y er s s pecifi ed in t h e L a y er N um ber (s

a nd La yer F ile Nam e(s) fi elds (see descriptions below ).

Exclude - export s a ll lay ers except t hose specifi ed in th e Lay er Number(s) fi eld

(it is n ot necessar y t o fi ll in th e La yer File Na me(s) fi eld).

Inc ludeis selected a s t he defau lt. U nless you specify layer n umbers t o include in t heLa yer Number(s) fi eld, a ll lay ers ar e aut oma tically included.

Layer Number(s)The nu mbers of th e lay ers t o be included or excluded in t he export process. Ent ries

a re sepa ra ted by comma s. For exam ple:

1,6,20



Layer File Name(s)

This option is us ed only w hen L a yers I nclude is select ed.

Ea ch ma sk la yer is export ed to a sepa ra te D XF fi le a s defi ned here. The informa tion

must be presented in pa irs, as follow s:

.. .

w here all a re separ a ted by spa ces. For exam ple:

1 msk1 3 msk3

Auto Merge


Arcs As Polygons

When Ar cs As Polygonsis select ed, a rcs a re export ed a s line segment s (polygons).This option is deselect ed a s t he defa ult .

Holes Format

The HoleFormatsect ion en a bles y ou t o d efi n e h ow t h e t r a nsla t or d ea ls w it h h oles ina design.

Holes As Polygons

When H ol es As Pol ygonsis selected, holes are converted into polygons. When HolesAs Pol ygonsi s notselected, polygons w ith holes a re tr a nsla ted a s single-segmentpolygons, th e fa l se edgesegment becoming pa rt of th e polygon. S ome syst ems ma ynot be a ble t o t olera t e this t ype of complex polygon. For t hese syst ems, ma ke cert a in

t h a t H ol es As Pol ygonsis select ed.

This opt ion is deselect ed a s t he defa ult .

Holes As Cutlines

When H ol es As Cut l i nesis select ed, holes a re convert ed t o cut lines. This opt ion isselected a s th e defa ult.

Preserve Holes

This opt ion is not ava i lab le for DXF (fl a t tened) E xpor t . Th is opt ion is desensit i zed as

the defa ult .



DXF Translator

Etch Factor

The etch fa ctor a pplies a globa l over/under size a mount to ea ch sh a pe tra nsla ted.

This is mea nt t o compensa t e for et ch effect dur ing processing. How ever, using t his

opt ion ca n be pr oblem a t ic. Th us, w e r ecom m en d t h a t y ou r et a i n t h e d efa u lt s et t in g o

0.If you use Et ch Fa ct or, ca refully verify th e corr ect ness of t he compensa t ion t o

minimize problems. Limita tions include the follow ing: When a fi gure ha s a side

sm a ller t h a n t h e et ch fa ct or, t h is fu nct ion m a y fa il. I f t w o bou nd a ries bu tt u p a g a in s

one a nother before compensa tion, beca use ea ch bounda ry is ha ndled independent ly,

such bounda ries will eith er overlap or show a ga p w hen compensa tion is specifi ed.

When E tch Fa ctor is a pplied, re-entr a nt polygons m a y be tr a nsformed int o illega l

polygons.

Miter Angle

Th is is t h e a n g le cu t off u sed w it h t h e et ch fa ct or. Th e m it er a n g le con t rols a cu t e a n g le

edge over-extension . Any ang le b elow the miter ang le amount is miter ed . The defau l

va lue is 90.0.

Mapping ADS to DXF (flattened)

Th e D XF fi l e cr ea t ed by t h e DXF (flattened)t r a nsla t or is a s sim ple a s possible so t h a

a s m a n y D XF pa r ser s, even pr im it ive on es, ca n r ea d t h e fi le. Wh en expor t in g a la y ouin D XF for ma t , a ver y sim ple h ea d er is cr ea t ed w it h a n en t ry for ea ch la y er d efi n ed in

the ma sk fi le. The DXF tra nslat or performs t he ma pping betw een ma sk an d D XF

fi les as shown in Ta ble 3-4.

Ta ble 3-4. Fla tt ened DXF Output

Mask Entity DXF Entity Comment

closed filled zero width closed polyline The difference between closed filled andclosed empty is lost.

closed empty zero-width closed polyline

open open zero width polyline

circle circle The difference between circle and holeis lost.

hole circle



layer name layer name

zero length point Any bad mask entity (one with zero area

or length) is mapped to a point.

Ta ble 3-4. Fla t tened DXF Out put (cont inued)

Mask Entity DXF Entity Comment



DXF Translator


47/162Importing EGS Archive Files 4-1

Chapter 4: EGS Archive FilesThe EG S Archive forma t is an ASC II text forma t tha t represents multiple

hiera rchica l designs. EG S Archive fi les include informa tion such a s dra w ing sha pes

lay out unit s, da t a ba se precision, grid spacing a nd, optiona lly, a la yers defi nition

including la yer colors, numbers, a nd na mes. They do not cont a in informa tion a boutth e connectivity of a lay out design.

Or ig ina t ing fr om a for mer Hewlet t -Pa ckar d pr oduct ca l led the E ng ineer ing G r aphic

Syst em (EG S), the E G S Archive forma t is useful as a n intermediat e fi le for

t r ans fer r ing input/outpu t to var ious th ir d-par ty t r ans la to rs. I t is a l so the bes t for ma

for t ra nslat ing gra phic sha pes into the Series IV an d MD S products. In a ddition, the

EG S Archive forma t is easy t o par se and r ead , so if you ha ve crea ted your ow n

soft w a r e t ools, t h is is a ver y u sefu l for m a t for t r a n sfer rin g g ra p hics s ha p es in t o t h es

tools.When import ing a n E G S Archive fi le int o Adva nced D esign S yst em, you ma y specify

a La yers File Nam e for t he crea t ion of a la yers defi nition fi le (th e L ayer s Fi le N amefi eld is loca ted in t he Import dia log box). This fi le will be a ut oma tically crea ted a nd

w ill cont a in the layer informa tion from the EG S Archive fi le, as w ell as la yers

a ut oma tically a dded a s necessar y during import . All designs crea ted during import

reference this la yers fi le.

Ova l or ha tch sha pes of the E G S Archive forma t a re not support ed in Adva nced

Design S ystem.

Importing EGS Archive Files




E G S Archive Files, refer to Import E G S Archive Options on page 4-1. For

in for ma t i on on m a ppin g E G S Ar ch ive fi les t o AD S , r efer t o Mapping E G S Ar ch ive to

ADS on page 4-2.

Import EGS Archive Options

Fi le > Import > EGS Ar chi ve Format > M or e Opti ons

Other t ha n lay er cha ra cterist ics, th ere a re no defi na ble options a va ilable for

import ing fi les in th e E G S Archive forma t.


48/1624-2 Exporting EGS Archive Files

EGS Archive Files

The Define L ayer sbut ton invokes th e La yer E ditor. For L a yer E ditor options, seeDefi ning La yers on pa ge 2-11.

Mapping EGS Archive to ADS

Ta ble 4-1represents t he ma pping of EG S Archive fi le sha pes to Adva nced D esign

Syst em la yout sha pes.

Exporting EGS Archive Files

The pr ocedur e for expor t ing each for mat is gener a l ly the same, however the ava i lab le

options differ. For a st ep-by-st ep tut orial on export ing a la yout fi le, refer to

Exporting a La yout on page 2-7. For specifi c export options rela t ed t o export ing

E G S Archive Files, refer to Export EG S Archive Options on pa ge 4-3. For

Ta ble 4-1. Ma pping of EG S Archive File Sh a pes t o Adva nced D esign S yst em S ha pes

EGS Archive Object Advanced Design System Layout Equivalent



Polygon with width = 0 PolygonPolygon with width > 0 Polygon with cutline on longest segment








49/162Exporting EGS Archive Files 4-3

informa tion on ma pping ADS to EG S Archive fi les, refer t o Mapping ADS to EG S

Archive on pa ge 4-5.

Export EGS Archive Options

Fi le > Expor t > EGS Ar chi ve Format > M or e Opti ons

Include Mask Layers

When t his option is selected, a list of ma sk layers is included wit h t he tr a nsla t ed

design. This opt ion is select ed a s t he defa ult .

Paths As Polygons



translat ion.

The EG S Archive fi le ha s pa ths wi th endpoint types other tha n flushtha t needto be preserved in th e progra m da t a ba se.




EGS Archive Files

Holes As Polygons

When this is selected, holes are conver ted to polygons. When Holes As Polygonsis noselected (t his is t he defa ult), polygons w ith holes a re t ra nsla ted a s single-segment

polygons, th e fa l se edgesegment becoming pa rt of th e polygon. S ome syst ems ma y

not be ab le to toler a te th is ty pe of complex poly gon . For these sys tems, select H oles APolygons.


Flatten Components

When Fl att en Component sis selected, a ll pa ra meterized component s a re fla tt ened.This opt ion is deselect ed a s t he defa ult .

All FilledWh en t h is is s elect ed , a l l d a t a is t r a n sfer red a s fi lled . Th is opt ion is d eselect ed a s t h

default .

Flatten All

When Fl at ten Al lis selected, a ll levels of hierar chy a re a ut oma tically removed a nd asingle fl a t design is export ed. There a re no references from t he t op-level str uctur e to

any other s t ructur e in the des ign. This opt ion is useful when y our pos t -pr ocessor doe

not support or correctly t ra nsla te hiera rchy in EG S Archive fi les. B ut bewa re: if asubstru ctu re wa s insta nced more th a n once, selecting t his option ca n substa nt ia lly

increa se the size of t he fi le.


Auto Merge


Define Layers



51/162Exporting EGS Archive Files 4-5

Mapping ADS to EGS Archive

Ta ble 4-2represents th e ma pping Adva nced Design S ystem la yout sha pes to EG S

Archive fi le sha pes.

Ta ble 4-2. Ma pping Adva nced D esign S yst em Sh a pes t o EG S Archive File Sha pes

Advanced Design System Layout Object EGS Archive Equivalent

Polyline Line

Path with PathsAsPolygons Polygon

Path without PathsAsPolygons Line

Circle Circle

Rectangle Rectangle

Polygon PolygonWire Line



EGS Archive Files


53/162Importing EGS Generate Files 5-1

Chapter 5: EGS Generate FilesThe EG S G enera te forma t is a n ASC II t ext forma t representing a single, fla t design

It is a subset of the EG S Archive forma t tha t conta ins only the sha pe informa tion. I f

a n hiera rchica l design is export ed, it is aut oma tically fl a tt ened during t he export

process.

Or ig ina t ing fr om a for mer Hewlet t -Pa ckar d pr oduct ca l led the E ng ineer ing G r aphic

Syst em (EG S), the EG S G enera te forma t is useful a s a n intermedia te fi le for

tr a nsferring input/out put t o various third -par ty tr a nsla tors. Also, th e EG S Archive

forma t is easy t o par se and r ead , so if you have crea ted your ow n softw a re tools, th is

is a very useful forma t for tra nsferring gra phics sha pes into these tools.

When importing a n E G S G enera te fi le into the Advan ced Design S ystem, you ma y

specify a L a yers File Na me for t he crea tion of a lay ers defi nition fi le (th e L ayer s Fi l e

Namefi eld is loca t e d in t h e I m por t d ia l og box). Th is fi le w ill be a u t om a t ica l ly cr ea t e da nd w ill conta in the la yer informa tion from t he EG S G enera te fi le, as w ell as layers

a ut oma tically a dded a s necessar y during import . All designs crea ted during import

reference this la yers fi le.

Ova l or h a t ch sh a pes of t h e E G S G en er a t e for ma t a r e n ot su ppor t ed in t h e Ad va n ced

Design S ystem.

Importing EGS Generate Files




EG S G enera te Files, refer t o Import E G S G enera te Options on page 5-1. For

informa tion on ma pping from E G S G enera te fi les to an ADS la yout, refer to

Mapping EG S G enera te to ADS on page 5-2.

Import EGS Generate OptionsFi le > I mport > EGS Gener ate Format > M or e Opti ons

Other t ha n lay er cha ra cterist ics, th ere a re no defi na ble options a va ilable for

importing fi les in the EG S G enera te forma t.


54/1625-2 Exporting EGS Generate Files

EGS Generate Files


Mapping EGS Generate to ADS

Ta ble 5-1represents t he layout ma pping from E G S G enera te forma t to Advan ced

Design S ystem layout.

Exporting EGS Generate Files

The pr ocedur e for expor t ing each for mat is gener a l ly the same, however the ava i lab le

options differ. For a st ep-by-st ep tut orial on export ing a la yout fi le, refer to

Exporting a La yout on page 2-7. For specifi c export options rela t ed t o export ing

EG S G enera te Files, refer t o Export EG S G enera te Options on page 5-3.For

Ta ble 5-1. Mapping from E G S G enerat e Files to Adva nced Design Sy stem La youts

EGS Generate Object Advanced Design System Layout Equivalent



Polygon with width = 0 PolygonPolygon with width > 0 Polygon with cutline on longest segment








55/162Exporting EGS Generate Files 5-3

informa tion on ma pping ADS to EG S G enera te fi les, refer t o Mapping ADS to EG S

G enera te on page 5-4.

Export EGS Generate Options

Fi l e > Export > EGS Generate Format > M or e Opti ons

Include Mask Layers

When t his option is selected, a list of ma sk layers is included wit h t he tr a nsla t eddesign. This opt ion is select ed a s t he defa ult .

Paths As Polygons



translat ion.

The EG S G enera t e fi le has pa ths w ith endpoint types other than flusht h a tneed to be preserved in the progra m da ta ba se.




EGS Generate Files

Holes As Polygons

When this is selected, holes are conver ted to polygons. When Holes As Polygonsis noselected (t his is t he defa ult), polygons w ith holes a re t ra nsla ted a s single-segment

polygons, th e fa l se edgesegment becoming pa rt of th e polygon. S ome syst ems ma y

not be ab le to toler a te th is ty pe of complex poly gon . For these sys tems, select H oles APolygons.


Flatten Components

This option is irreleva nt for EG S G enerat e fi les. The EG S G enerat e design is

a utoma tica l ly fla t t ened.

All FilledWh en t h is is s elect ed , a l l d a t a is t r a n sfer red a s fi lled . Th is opt ion is d eselect ed a s t h

default .

Flatten All

This option is irreleva nt for EG S G enerat e fi les. The EG S G enerat e design is

a utoma tica l ly fla t t ened.

Auto Merge


Define Layers


Mapping ADS to EGS Generate

Ta ble 5-2represents th e la yout ma pping from Adva nced Design Syst em layout t o

EG S G enera t e format .


57/162Exporting EGS Generate Files 5-5

Ta ble 5-2. Mapping from Adva nced Design Syst em Lay out t o E G S G enerat e Forma

Advanced Design System Layout Object EGS Generate Equivalent

Polyline Line

Path with PathsAsPolygons PolygonPath without PathsAsPolygons Line

Circle Circle

Rectangle Rectangle

Polygon Polygon

Wire Line



EGS Generate Files


59/1626-1

Chapter 6: GDSII Stream File TranslatorThe end result of ma ny MMIC designs is a Ca lma or G DS II st ream forma t fi le.

Adva nced Design Syst ems La yout provides a fl exible G DS II t ra nsla tor for bot h

rea ding and w ri t ing this forma t .

The GD SI I St rea m File Tra nsla tor is a bi-directiona l gra phics fi le tr a nsla tor. It can

cr ea t e fi l es in G D S I I S t rea m fi l e for ma t fr om Ad va n ced D esign S y st em la y ou ts, a n d i

ca n tra nslat e graphics fi les from G DS II S trea m fi le forma t int o Adva nced Design

Syst em la youts.

The Adva nced Design System t o G DS II S trea m fi le forma t t ra nslat ion l inks the

Adva nced Design Sy stem directly t o ma sk-ma king equipment t ha t uses th e popular

G DS II St ream fi le forma t. This forma t, in t urn, gives access to a w ide ra nge of

phot oplott ers, coordina togra phs, E -beam ma chines, a nd pa tt ern genera tors.

Th e G D S I I S t rea m fi l e for ma t t o Ad va n ced D esig n S yst em for ma t t r a nsla t ion m a ke

it ea sy t o use the cell libra ries offered by m a ny G a As semiconductor foundries.

Tra nslat ion from a layout in the Advan ced Design Sy stem into GD SI I S trea m fi le

forma t is done with the menu comma nd Fi le > Expor t > GDSII Stream Format.

G DS II h a s some limita tions tha t m a y a ffect your layout, including:

No support for a rcs or circles

Limit of 200 ver t ices per sha pe No support for holes or empty regions

32-chara cter name limi ta t ion

L imit of 255 mask layers

Curved Element Limitation

Although t he Adva nced D esign S yst em ha s options for re-ma pping la yer num bers

a nd st ructure na mes, it does not h a ve the full ability to overcome the G DS IIlimita tions rega rding curved elements. The progra m st ores a rcs a s t rue a rcs. When

tra nslat ing a rcs to G DS II format , the progra m converts each arc into line segments.

This number can be controlled via the Arc Resolut ion dia log box (select Edi t > Mod ify> Ar c/ Cir cle Resolu ti onfrom t he La yout w indow ). However, a sha pe w ith severala rcs, such a s a t ra nsmission line w ith curved element s, ma y not be a pproxima ted

w ith suffi cient resolut ion given t he 200 vert ex limit a t ion. Therefore, some


60/1626-2

GDSII Stream File Translator

considera t ion should be given t o t he use of curv ed element s a nd t he extensive use of

a rcs an d circles in your la yout design.

Lack of Support for Holes

La ck of support for h oles is usua lly not a problem, but should be considered. TheAdva nced D esign S yst em ca n convert sha pes w ith holes into cont iguous single

polygons by insert ing a n extra edge (shown below ). Insert ing a n edge is va lid for

G DS II output, but ma y be a problem for certa in ma sk generat ion softwa re.

Filename Limitation

I f very long na mes a re used for netw orks (great er tha n 32 cha ra cters), a tra nslat ion

ta ble ca n be genera ted t o ma p these nam es to shorter, unique na mes.

Limit on the Number of Layers

I f y ou r la y ou t h a s m or e t h a n 255 la y er s, som e of t h ese ca n be r e-m a pped t o a ppea r on

the same G DS II layer.

Conclusion

G DS II l imita tions can a ffect how you design your layout. The l imita tion t ha t bea rs

part icular considera tion is the fact th a t G DS II S trea m forma t is l imited to 200vert ices per polygon/polyline a nd does not in clude a rcs.

In t he Adva nced Design Syst em, a rcs a re stored as t rue arcs, but a re evalua ted a s

poly gon s eg men t s w h en t r a n sla t e d t o G D S I I . Alt h ou gh t h e n um ber of v er t ices u sed t

a pproxima t e a n a rc ca n be cont rolled via t he Arc Resolut ion dia log box (see Curved

Element Limita tion on pa ge 6-1), th e 200 vert ices limit ma y prevent t he progra m

Shape with a hole. Extra edge inserted forGDSII translation.


61/162Importing GDSII Files 6-3

from correct ly eva lua t ing polygons consist ing of severa l a rcs. Therefore, it is best t o

consider t he num ber of a rcs your sh a pes cont a in before designing your lay out .

G DS II does not ha ve the a bil ity t o emptya polygon or crea t e a hole. The tra nsla torcan outpu t poly gons wi th holes as s ing le-segment poly gons wi th an ext r a edge added

or a s sepa r a t e poly gon s. I f t his is n ot a ccept a ble, you m a y w a nt t o proh ibit t he use o

holes in y our design.

Ta ble 6-1is a ma pping ta ble for G DS II elements a nd t heir Adva nced Design S ystem

layout equiva lents.

Importing GDSII FilesThe Adva nced Design Syst em reads G DS II fi les into a lay out design w ithout circuit

or schema tic informa tion, interna lly converting th e dra w ing da ta to the current

layout units .

For a s tep-by-s tep tutor ia l , see I m por t in g a L a y ou t on pa g e 2-3. For impor t opt ions

see Import G DS II Options on page 6-5.

Ta ble 6-1. G DS II E lements a nd Advan ced Design S ystem La yout Eq uiva lents

Calma/GDSII Element Layout Equivalent(s)

Box element Rectangle

Boundary element Polygon

Path element Path

Boundary element Circle, polygon

Element Text

Boundary element Hole

Structure element Design

Sref element Instance

None PinPath element Wire

Path element Trace

Plex None

Array Instances

Node None


62/1626-4 Importing GDSII Files


Guidelines/Considerations

I f a l ay er s fi le name is defi ned in the Importdia log, the fi le is loa ded intomemory before the G DS II importer st a rts . See Importing a La yout on

page 2-3for more inform a t ion.

I f t h e im por t er en cou nt er s elem en t s on la y er s n ot pr es en t in t h e la y er d efi n it ionfi le, it w ill aut oma tica lly a dd new la yers. I f new layers a re added, the importer

sa ves the revised layer defi nition fi le to disk.

When tra nsferring a G DS II fi le via FTP, you must specify the binar y option.

When tr a nsferring a fi le via t a pe, the 2048 block size must be preserved. To

w rite fi xed-block sized t a pes for t ra nsfer t o ot her syst ems, refer t o your

comput er syst em document a tion.

When reading a G DS II fi le, the Advanced D esign S ystem ignores referencelibra ries, font fi les, genera tions, forma t t ypes, an d nodes. Element fl a gs

(ELFLAGS), complexes (PLEX, see P lex P roperty on pa ge 6-6), da ta types,pat h t ypes, extensions, a nd element propert ies a re a lso skipped.

Rea ding a G DS II fi le ma y also fa i l i f the fi le is the wrong vers ion or ha s been

corrupted.

Note B eca use the G DS II st ream is a block-structured bina ry fi le, i t ca n ea sily

be corrupt ed wh en tra nsferring th e fi le from one syst em to an oth er.

Filenames Versus Instance Names

When import ing a G DS II fi le into the Adva nced Design Syst em, the design na me on

the La yout t i t le bar m a y differ from t he G DS II fi lena me. The reason for t his is as

follows.

The G DS II fi le forma t can cont a in multiple top-level insta nces tha t m a y or ma y not

be r ela t ed t o on e a n ot h er. B eca u se of t h is, t h e G D S I I fi l en a m e m a y n ot be id en t ica l t

t he top-level insta nce na me.

Wh en im por t in g a G D S I I fi le, t h e t op-lev el in st a n ce is a u t om a t ica l ly d is pla y ed in t h

L a you t w in dow. Th e n a m e of t h a t in st a n ce is r efl ect ed in t h e L a you t t it le ba r. I n som

ca ses, this na me does not ma tch tha t of the imported fi le.


63/162Importing GDSII Files 6-5

G DS II fi le insta nce na mes simplify t he tra cking of hiera rchies w ithin th e fi le.

Exporting a G DS II fi le under a new na me will ha ve no effect on the nam ed dat a

cont a ined in th e fi le.

Import GDSII OptionsThe Import G DS II Options dia log box enables you t o specify certa in loca l a tt ributes

to cont rol th e import of GD SI I S tr eam fi les. An xa ppea rs in t he box to the left ofselected a t t ribut es. To select or deselect a n a t t ribut e, click it.

Note To control attributes globally, click the Define Layers butt on t o invoke the

La yer E ditor. For m ore informa tion on t he La yer E ditor, see Defi ning La yers on

page 2-11.

Data Type Property

Selecting Data Type Pr oper tyenables import of G DS II fi les tha t use the Data Typerecord in G DS II a nd reta in the informa tion in a property a tt a ched to the

corresponding Adva nced Design Syst em da t a st ructure. When ena bled, an y Da ta

Type r ecords encoun t ered on Boundaryor Paths tructures while importing a G DS IIfi le ca use a property na med Data Typeto be creat ed and a tt a ched to the resulting

da ta group in t he Adva nced D esign S yst em. The va lue of th e propert y is set t o t heinteger va lue found in t he G D SI I record. In t he reverse ma nner, Da ta Type records

a re crea ted in the G DS II fi le when enabled for da ta groups tha t ha ve a Da ta Type

propert y w ith int eger va lue.


64/1626-6 Exporting GDSII Files


Plex Property

Selecting Pl ex Pr oper tyenables import of G DS II fi les tha t use the PLEXrecord inG DS II a nd reta in the informa tion in a property a tt a ched to the corresponding

Adva nced Design Syst em da ta str ucture. When enabled, a ny P LE X records

encountered on Boundary, Path, SREF, AREF, a nd TEXTs t ructures whi le impor t inga G DS II fi le ca use a property na med PLEXto be creat ed and a tt a ched to theresulting st ructure in t he Adva nced D esign S yst em. The va lue of th e propert y is set

t o t h e in t eg er va lu e foun d in t h e G D S I I r ecor d. I n t h e r ever se m a n ner, P L E X r ecor d

a r e cr ea t ed in t he G D S I I fi le w h en en a bled for st ruct ur es t ha t h a ve a P L E X pr oper ty

w ith int eger value.

Define Layers

This bu t ton invokes the L ay er E ditor. For L ay er E ditor opt ions, see Defi ning Layers

ads 2012 import and export designs

Documents