hfss12 for advanced antenna applications

HFSS 12 for Ad d A tHFSS 12 for Ad d A tAdvanced Antenna& Radar Cross Section

Advanced Antenna& Radar Cross SectionApplications & Ansys

Applications & AnsysAnsysAnsys

March 2010Jason YunSr Application Engineer

March 2010Jason YunSr Application EngineerSr. Application EngineerANSYS INC.Korea

Sr. Application EngineerANSYS INC.Korea

© 2009 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary© 2009 ANSYS, Inc. All rights reserved. 1 ANSYS, Inc. Proprietary

HFSS Excels at Wide Variety of Antenna ApplicationsAntenna Applications

Military Platform IntegrationPhased Arrays

© 2009 ANSYS, Inc. All rights reserved. 2 ANSYS, Inc. Proprietary

Integrated Mobile Devices Commercial Platform IntegrationBiomedical

Example Virtual Prototype for Advanced Phased Array SystemAdvanced Phased Array System• HFSS and Designer used for dynamic co-simulation of phased array

t ith b f i t k

Beamformer Dynamically Linked to HFSS Simulation Dynamic

Link

aperture with beamforming network

Designer/Nexxim

1x16 Array PanelHFSS

Data Link

16x16 Phased Array


16x16 Array on UAV Platform

Example Integrated Antenna Design for HP Wireless PrinterDesign for HP Wireless Printer• HFSS enables full-wave design of antennas in operating environment

PIFA Pattern Installed in Printer Platform

PIFA Pattern on

in Printer Platform

WLAN PWB

Impedance Det ningImpedance Detuning of Local Enclosure


Non-LOS Coupling to Access Point in Office Environment

HFSS 12 Offers Advanced Features for Antenna Design

• Output quantities– Active S-parameters

• Advanced boundary conditions– Perfectly matched layers

Features for Antenna Design

Active S parameters– Antenna trace characteristics (Beamwidth, SLLs)– Near fields and far fields

• Design automation– Parametric modeling

y y– Floquet ports– Periodic linked boundaries– Layered impedance – Screening impedance Parametric modeling

– Parametric sweeps– Optimizations– Sensitivity and statistical analysis

Distributed solve for high performance computing

Screening impedance• Advanced solver technology

– Iterative matrix solver– Higher-order basis functions– ALPS fast and interpolating frequency sweeps – Distributed solve for high-performance computingALPS fast and interpolating frequency sweeps

• Complex materials– Frequency-dependent– Anisotropic

Non-linear -15

-10

-5

0

ss (d

B)

Ansoft Corporation arrayActive Return Loss

– Non-linear

6 7 8 9 10 11 12 13 14Frequency [GHz]

-40

-35

-30

-25

-20

Activ

e R

etur

n Lo

Curve InfodB(ActiveS(P1:1))

Setup1 : Sweep1dB(ActiveS(P2:1))

Setup1 : Sweep1

Screening

-25.00-20.00-15.00-10.00-5.000.005.00

90

60

300

-30

-60

-90

m1

m2

m3

m4Name Theta Ang Magm1 -74.00 -74.00 -5.62m2 14.00 14.00 6.51m3 50.00 50.00 3.57m4 -10.00 -10.00 3.79


Screening impedance used for FSS radome

-120

-150-180

150

120Curve Info lSidelobeY lSidelobeX xdb10Beamwidth(3)

dB(DirTheta)Setup1 : LastAdaptive -5.62 -74.00 61.58

HFSS 12 Offers Advanced Features for Antenna Design

• Antenna Design Kit

Features for Antenna Design

• Dynamic link • Data Link • Antenna Design Kit– Library of 25+

antennas– Custom antennas

• Dynamic link– Bi-directional link

between circuit solver and HFSS

• Data Link– HFSS design can be

used as excitation in a separate HFSS design Custom antennas

– Synthesis feature– Incorporates antenna feed circuits for complete system i l i

p g– Enables efficient

simulation of large and complex geometries

simulation

Source DesignAnsoft

Designer

Port1 1

2

3

V

V

Antenna Input

0 HFSS Model

Designer

0

A

Target Design


Example Platform Integration HFSS ModelHFSS Model

• F-35 Joint Strike Fighter– UHF blade antenna on underside

of fuselage350 MHz solution frequency– 350 MHz solution frequency

• Bounding airbox is 11m x 16m x 5mx 5m– Approximately 13λ x 19λ x 6λ or

1480λ3

• Used as test case to illustrate various solution options

N b f– Number of processors– Matrix solver type– Basis function order


Basis function order

Comparison of HFSS 11 and HFSS 12 for JSF Antenna Model 12 for JSF Antenna Model

• UHF blade antenna on Joint Strike Fighterg• Inherent improvements in runtime and RAM

usage for this example– Model converges to desired accuracy in 50% of

the time using 20% less RAM

JSF Antenna Model(8 CPUs)

Adaptive Passes to Reach ΔS = 0.02 Tetrahedra Runtime

(min) RAM (GB)

HFSS 11: 2nd order basis and iterative solver 6 162k 98 9.1

HFSS 12: 2nd order basis 6 119k 59 6 9and iterative solver 6 119k 59 6.9

HFSS 12: mixed order basis and iterative solver 7 156k 47 7.6


HFSS 12 Offers Domain Decomposition SolverDecomposition Solver• Domain decomposition solver

ff f– Efficient solution for very large electromagnetic problems

• Naturally parallelizable to take d t f hi h fadvantage of high-performance

computing resources– Distributed via Message

Passing Interface (MPI)Passing Interface (MPI)• Automatic generation of

domains by mesh partitioningU f i dl

Parabolic reflector antenna with horn feed and mounting structure

– User friendly– Load balance

• Hybrid iterative & direct solver– Multifrontal direct solver for

each subdomain– Subdomains exchange

i f ti it ti l iMachine 1 Machine 2 Machine 31


information iteratively via Robin’s interface conditions

12.5 Million unknownsHFSS 11 runtime: 17 hrs

HFSS 12 DDM runtime: 2.5 hrs

“Divide and Conquer”


Domain Decomposition Process

Mesh partition

Mesh assembly/solve Adaptive analysis……Mesh assembly/solve

Domain 1 Domain 2 Domain N

……

D i it tiDomain iterationDomain iteration


DDM Solution Time Scales Better than Linearly for This Examplethan Linearly for This Example

Number of Time Speed-upNumber of Domains

Time (secs)

Speed up Factor

1 23252 1.0

2 8928 2.6

3 6056 3.8

4 4479 5.2

5 3476 6.7 1719

me Speed-up

6 2784 8.4

7 2649 8.8

8 2180 10.7

9 2032 11 4 9111315

or fo

r Run

tim9 2032 11.4

10 1760 13.2

11 1859 12.5

12 1804 12 9 3579

Scal

e Fa

cto

12 1804 12.9

13 1527 15.2

14 1649 14.1

15 1313 17 7

13

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15

S


15 1313 17.7

Iterative 1 4815 4.8Number of Domains

Domain Solver Exhibits RAM Savings for this ExampleSavings for this Example

Number of Total AverageNumber of Domains

Total RAM (GB)

Average RAM (GB)

1 33.30 33.30

2 28.43 14.22

3 27.46 9.15

4 24.89 6.22

5 24.88 4.98 RAM Requirement vs Number of Domains

6 23.94 3.99

7 23.53 3.36

8 23.25 2.91

9 22 15 2 46253035

B)

Total RAM

Average RAM

9 22.15 2.46

10 21.06 2.11

11 21.97 2.00

12 20 64 1 72101520

RA

M (G

12 20.64 1.72

13 20.96 1.61

14 20.49 1.46

15 20 18 1 35

05

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15Numberof Domains


15 20.18 1.35

Iterative 1 12 12

Number of Domains

Mesh Operations Can Increase Simulation CapacitySimulation Capacity• Surface approximations

Can be used to simplify geometry– Can be used to simplify geometry representation for HFSS meshing engine

– Reduce facet angles for curved surfaces, etc.• Model resolution• Model resolution

– Allows mesher to ignore small details in model geometryApply to imported geometries with electrically– Apply to imported geometries with electrically insignificant details (small fillets, rounds, and chamfer protrusions)


HFSS 12 Includes Curvilinear Mesh ElementsMesh Elements• Most accurate representation

f d d f lHFSS 12 can use

of curved and conformal structures

• Mesh points pulled to curved

either mesh element

p por true surfaces

• Reduces solution time and RAM usage

Rectilinear mesh element Curvilinear mesh element

RAM usage• Surface approximations can

further control meshing of geometry

Red – HFSS

Blue – Analytic Curve10 cm radius PEC sphere

l d f 0 040 2 GH


solved from 0.040 - 2 GHz

Cleanup of Model Geometry Can Increase Simulation CapacityIncrease Simulation Capacity• Geometry healing

Use automated or manual healing to analyze and remove problem features– Use automated or manual healing to analyze and remove problem features– Small gaps, edges or vertices not on face, etc.

• De-featuring– Use to remove holes, chamfers, blends, edges, faces, or sliver faces– In general, is it desirable to remove all electrically insignificant details


Imported Geometry Can Be ParameterizedParameterized• Imported geometry has no "history" in HFSS model tree

H it i ibl t i di tl dit th t ithi HFSS– However, it is possible to indirectly edit the geometry within HFSS• Examples of parametric operations

– Boolean operations– Moving faces– Arrange objects– Duplicate objects

Moving a Face

Right Click Change Selection Mode to

Example:

Right Click Change Selection Mode to Select Faces

Select face that you would like to modify

Right Click Edit Surface Move Faces Al N l


Along Normal

GUI Options for Large Models Enable Faster Model Interaction Enable Faster Model Interaction • Following options are accessed through Tools →

O ti M d l O ti Di lOptions → Modeler Options → Display– Set Default View Render to wireframe– Disable Display UV Isolines to simplify wireframe

displaydisplay– Disable Visualize History of Objects to remove

visualization of objects that are part of the model historyhistory

• Disable Visualize Boundaries on Geometry to prevent delays when selecting boundaries

Accessed through Tools → Options → HFSS– Accessed through Tools → Options → HFSS Options → General

• Use larger deviations to view curved objects in less detailless detail

– Accessed through View → Visualization Settings• Disable Do Autosave or set interval to larger value

A d th h T l O ti G l


– Accessed through Tools → Options → General Options → Project Options

New Modeling Commmands

• Fillets and “Modeler/Chamfer (Fillet)”

Chamfers on 2D objects

• Sheet wrapping• Sheet wrapping• Sheet and body

imprinting with p gprojection


HFSS-to-HFSS Field Data Link Increases Simulation CapacityIncreases Simulation Capacity• Data Link couples multiple

HFSS d i ll ffi iHFSS designs to allow efficient simulation of large and/or complex geometries– Simulate larger structures on

existing hardware resources• Uni-directional link between

Source Target

Uni directional link between source and target HFSS designsB i f ti d d t i• Basis function order and matrix solver type are independent for source and target designs

S

+ =Source

Target


Example Data Link for Radome Effects on Phased Array PatternEffects on Phased Array Pattern• Phased array model linked into radome model• Data-linked HFSS models increase capacity without sacrificing

accuracy– Partitioned models use significantly less RAM than full modelPartitioned models use significantly less RAM than full model


Reference Model Data Linked Model

Example Data Link for Phased Array Integration onto UAVArray Integration onto UAV• Phased array linked into

l f d lplatform model– Solve detailed antenna in

source design– Link field solution as source for

platform design

Source Design is HFSS

Target design is Predator UAV

Source Design is HFSS 16x16 Array


Example Data Link for USB Bluetooth Antenna on PrinterBluetooth Antenna on Printer• Fractal antenna with complex geometry• Data link used to link Bluetooth antenna source

model into multiple printer target models• Coupling to WLAN antennas in target model

agrees with reference model which includes all antennas

Coupling Between WLAN and External Bluetooth Antennas

-20

-10

0

dB)

-40

-30

Cou

plin

g (d

Data Link Target Model

Data Link Source Model Bluetooth-

WLAN1Bluetooth-WLAN2

-60

-50


Target ModelFull Model -49 -32Data Link -49 -33

Example Data Link for Printer and Router in Office EnvironmentRouter in Office Environment• Data link extended to multiple target projects• Cascaded target designs used to compute

coupling between antennas– Coupling primarily a result of multipath

t i i ff ttransmission effects– Printer to router coupling = -55 dB

Source ProjectP i tPrinterTarget Project

Router

Incident FieldIncident Field From Printer


Office Environment (Intermediate Target)

Distributed Solve Option Increases Simulation ThroughputIncreases Simulation Throughput• Takes advantage of high-performance computing resources• Distributes frequency sweeps and certain Optimetrics

simulations across multiple processors and/or computers• Performs simulations in parallel rather than sequentially• Highly scalable near-linear improvement in compute time

11

23

2

Monitor progress for each machine

Solve design using Distributed mode


Specify machines on network by name or IP address

for each machine

HFSS 11 Can Distribute Multiple Types of SimulationsTypes of Simulations• DSO can be used for various types of simulations

Di t f– Discrete frequency sweeps– Interpolating frequency sweeps– Optimetrics parametric sweeps– Optimetrics statistical analysis– Optimetrics genetic algorithm optimizer– Any of the above that are part of sensitivity analysis

Ten 8-core machinesOne 8-core machine

Adaptive Solutions10 passes/variation

ModelVariation 1

Frequency SweepInterpolating Sweeps

Adaptive Solutions10 passes/variation

ModelVariation 1

Frequency SweepInterpolating Sweeps10 passes/variation

20 minutes/variation200 minutes total

Variation 2…Variation 10

Interpolating Sweeps3 minutes/sweep30 minutes total

10 passes/variation20 minutes/variation22 minutes total(10% overhead)

Variation 2…Variation 10

Interpolating Sweeps3 minutes/sweep3 minutes total


Total time for Optimetrics with DSO: 25 minutes

Total time for Optimetrics with single machine: 230 minutes

Advantages of Using HFSS with Distributed Solve OptionDistributed Solve Option

• Utilize multi-core, multi-CPU clusters to greatly accelerate simulation times (approximately linear scale factor)

• Explore larger design spaces in less time• Establish scalable hardware platforms to take advantage

of increasingly parallelized algorithms in HFSS

• Optimetrics analysis of circularwaveguide phased array

• Parametric sweep over 45

• Optimetrics analysis of PIFAradiating element

• Parametric sweep of antenna

0Ansoft Corporation isolationS11 for Element 1 Parametric Sweep

scan angles• 5X faster when distributed to

6 CPUs

geometry• 7.5X faster when distributed

to 8 CPUs

25

-20

-15

-10

-5

0

dB(S

(P1,

P1))

Curve InfodB(S(P1,P1))

Setup1 : Sweep1extra_element_lengt

dB(S(P1,P1))Setup1 : Sweep1extra_element_lengt

dB(S(P1,P1))


2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 2.9 3.0Freq [GHz]

-35

-30

-25 dB(S(P1,P1))Setup1 : Sweep1extra_element_lengt

dB(S(P1,P1))Setup1 : Sweep1extra_element_lengt

dB(S(P1,P1))

Scan Impedance

Introducing the HFSS-IE Solver Introducing the HFSS-IE Solver SS So eoption

SS So eoption


HFSS 12.1


HFSS 12.1: New IE Solver

• IE, what is it?A l t h l i th HFSS d kt– A new solver technology in the HFSS desktop

– A 3D Method of Moments (MoM) Integral Equation technique• Efficient solution technique for large, open, radiating or

scattering analyses– Antenna placement– Radar cross section (RCS)

• Automated results with accuracyEffective utilization of automated adaptive meshing technique– Effective utilization of automated adaptive meshing technique from HFSS

• Ensures accuracy– Employs Adaptive Cross Approximation (ACA) technique for

larger simulationlarger simulation• Automated matrix based solution for larger problems

• Easy to use interface – Implemented as a new design type in the HFSS desktop

Sh d l i t f d i il l i t• Shares same modeler interface and similar analysis setup• Minimal user training required for existing users of HFSS

• Utilization of results from HFSS as a linked source– Link can include effects of backwards scattering to the

source geometry


source geometry

Application: Antenna Placement

• Antenna Placement - Predator UAV drone:– UHF (900 MHz) and VHF (350 MHz)

– All conducting. Aluminum airframe and antenna elementsBlade antenna geometry with slot feed


– Blade antenna geometry with slot feed


• Antenna Placement - Predator UAV drone @ VHF

– Wingspan ≈ 17λWingspan 17λ– Surface Currents– Far Fields

S t


– S-parameters


• Predator UAV drone @ 350MH350MHz– HFSS-IE:

• Time: 1:30:51 (10 adapt. passes + ( p p12 solve int. sweep)

• Memory: 5.3 GB– HFSSSS

• Time: 2:25:13 (8 adapt. passes + 20 solve int. sweep)

• Memory: 7.2 GBy– Similar Results

• IE (Integral Equation)FE (“Traditional” HFSS Finite• FE (“Traditional” HFSS Finite Element)

– Saving in memory and time ith HFSS IE


with HFSS-IE

Application: Radar Cross Section

• RCS of PEC Cone Sphere


Easy to Use

• A new design type in the HFSS desktopthe HFSS desktop– Similar interface as

HFSSS d l t– Same model tree

– Same project tree– Similar solution setup– Same reporter– Minimal training for

existing HFSS usersg– Easily share models

and materials between types


Automated and Accurate Results

• Same adaptive meshing technology as HFSS


HFSS-IEHFSS-IERCSBenchmarksRCSBenchmarks


HFSS-IE

Benchmarks

First will consider the standard benchmarksFirst will consider the standard benchmarks from the electromagnetic code consortium (EMCC)(EMCC)

For the simple shapes (examples 1 3) the solve time was a fewFor the simple shapes (examples 1-3) the solve time was a few minutes and around 500MB RAM for each.

Note: all figures taken from A.C. Woo et al, “Benchmark radar targets for the validation of computational electromagnetics programs,” IEEE AP Magazine, Vol. 35, Feb., 1993, pp. 84-89 or for the cases of the cone sphere from A.D.Greenwood, et al, “A novel algorithm for the scattering from a


g gcomplex BOR using the mixed finite elements and cylindrical PML,” IEEE AP Trans., Vol. 47, April, 1999, pp 620-629

Example 1 – RCS BM 1

Example: Monostatic RCS NASA Almond:Example: Monostatic RCS – NASA Almond:


Example 1 - RCS

-20.00

-15.00Ansoft LLC XY Plot 1 ANSOFT

Results:

-35 00

-30.00

-25.00

tatic

RC

SP

hi)

Results:

50 00

-45.00

-40.00

35.00

dB(M

onos

t

25 00

-20.00

0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00IWavePhi

-55.00

-50.00

-40.00

-35.00

-30.00

-25.00

cRC

SThe

ta)

-60.00

-55.00

-50.00

-45.00

dB(M

onos

tatic

0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00IWavePhi [deg]-70.00

-65.00



Monostatic RCS Ogive:Monostatic RCS –Ogive: ≈25 cm long analyzed at 9 GHz.



A ft LLC HFIED i hXY Pl t 2

30 00

-20.00

-10.00Ansoft LLC HFIEDesign_phXY Plot 2 ANSOFT

Curve InfodB(MonostaticRCSPhi)

Setup1 : LastAdaptiveFreq='9GHz' IWaveTheta='90deg' Phi='0deg' Theta='0deg'

dB(MonostaticRCSTheta)1Imported

Freq='9GHz' IWaveTheta='90deg' Phi='0deg' Theta='0deg'

-50.00

-40.00

-30.00

Y1

-70.00

-60.00

0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 180.00IWavePhi

-80.00



Monostatic RCS Double Ogive:Monostatic RCS – Double Ogive: ≈ 19 cm long analyzed at 9GHz.



-10 00

-20.00

10.00

40 00

-30.00

Y1

-50.00

-40.00

0.00 20.00 40.00 60.00 80.00 100.00 120.00 140.00 160.00 180.00IWavePhi

-60.00



E ample Monostatic RCS Cone SphereExample: Monostatic RCS – Cone Sphere: ≈ 68 cm long analyzed at 9GHz.



0.00

10.00

-20.00

-10.00

cRC

SPhi

)_al

l

50 00

-40.00

-30.00dB

(Mon

osta

tic

0 00 25 00 50 00 75 00 100 00 125 00 150 00 175 00-70.00

-60.00

-50.00

0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00IWavePhi [deg]



Example: Monostatic RCSExample: Monostatic RCS –Cone Sphere with gap (λ/5 width and depth): ≈ 68 cm long analyzed at 9GHz≈ 68 cm long analyzed at 9GHz.



-10.00

0.00

10.00

-30.00

-20.00on

osta

ticR

CS

Phi

)

60 00

-50.00

-40.00

dB(M

o

0.00 25.00 50.00 75.00 100.00 125.00 150.00 175.00IWavePhi [deg]

-70.00

-60.00


Example 6 – RCS Mixed Scatterer

εr = 2.6

PEC

Radius. = 2.03λ0

Overall Length = g2.7λ0

Use default settings and 2 passes HFSS-IE - < 2min and 550MB


Data available from L. Medgyesi-Mitschang and D-S Y Wang,”Hybrid solutions for scattering from large bodies of revolution with material discontinuities and coatings,” Trans. AP, Vol 32, July 1984, pp. 717-723.

Example 6 – RCS Mixed Scatterer

Mixed Scatterer

25

30

15

20

CS

dB(NormRCSPhi) [] - IE

Norm RCS (dB) - Reference

5

10

Bis

tatic

RC

-5

0

-100 30 60 90 120 150 180

Angle (deg)


HFSS and HFSS and ANSYS Thermal/Mechanical/Fluid Integration

ANSYS Thermal/Mechanical/Fluid IntegrationIntegrationIntegration


Introduction to ANSYS WorkbenchWorkbench

• Advanced platform for intuitive multi-physics simulation– Schematic-based framework for integrated engineering analysis

• Pre-processing, meshing, simulation, and post-processingBi di ti l ti f ll j CAD k– Bi-directional connections for all major CAD packages


Automated HFSS Export to ANSYS WorkbenchANSYS Workbench• HFSS 12 includes automated link for thermal

l i i ANSYS W kb hanalysis in ANSYS Workbench– Allows Workbench solvers to invoke HFSS in

batch mode to obtain power loss density– Supports thermal static and transient analysis

• Mesh-independent linkModel geometry should also be exported– Model geometry should also be exported

– Accurate control of load mapping• Allows access to other Workbench solutions

– Non-linear thermal stress, pre-stressed mechanical eigenmode analysis, CFD, etc.


Integrated Multi-Physics Approach to Phased Array System Approach to Phased Array System

Antenna/Radar DesignCircuit

and EM

Antenna/Radar Design• Radiation pattern• Effect of temperature on electrical properties• Radiation performance under• Radiation performance under deformed conditions

Phased ArraySystemDesign

CFDCSM

Mechanical, Shock, and Vibration Analysis• Component de-bonding• Thermal stresses

Fluid Flow and Heat Transfer Simulations• Radiation and transfer to electronics board and


Thermal stresses• Board deformation

electronics board and surroundings• Active cooling

Example Phased Array Panel Multi-Physics Analysis

• ANSYS coupled-physics methodology for phased array

Multi-Physics Analysis

radar system design

Power density Temperature

Deformations,Induced vibrations

Ansoft Designer and HFSS

ANSYS Mechanical or CFD

ANSYS Mechanical

Power density Temperature

Circuit and Electromagnetics

Thermal, Fluid flow

Thermal stress, modal randomElectromagnetics flow modal, random shock/vibe, etc.


Example Integrated Radar System

Side-Looking Synthetic Aperture Radar Global HawkSynthetic Aperture Radar

Radar - OperationSpot Collection Modep

AmplitudePhase


Quasi-Yagi Radiating Element Antenna Array Active Electronically Scanned Array

Virtual Prototype of Phased Array

1D: CircuitDynamic

Link 3D: 16x16 Antenna ArrayComponent Design

Link

Designer/Nexxim HFSS

Results


16x16 Antenna ArrayRadar System Virtual Prototype

ANSYS Aerodynamics Analysis of Radome Integration EffectsRadome Integration Effects

Radome

With RadomeWith Radome

© 2009 ANSYS, Inc. All rights reserved. 58 ANSYS, Inc. ProprietaryPressure Contours with Streamlines

Without Radome

Integrated Antenna Panel Used for Multiphysics Simulationsfor Multiphysics Simulations

AntennaAntenna Element

Circulator

BFN

Amp

Power Distribution


Workbench Project Page for Integrated Antenna PanelIntegrated Antenna Panel

• Intuitive flowchart-like workflow structure• Data easily shared between different modules

Steady-State Thermal Static Structural Prestressed Modal Random Vibrationy

Shock Response


p

Steady-State Thermal Analysis of Integrated Antenna Panelof Integrated Antenna Panel

Inject heat at each power amplifier location

ANSYS predicts temperature i d t h t l d


rise due to heat loads

Static Structural Analysis of Integrated Antenna PanelIntegrated Antenna Panel

ANSYS predicts structure deformations due to temperature rise

Specify locations of structural supports on array panel

The temperature distribution on the board will develop thermal strains causing the board to deform ( )ref

zth

yth

xth TT −=== αεεε


Structural boundary conditions and any external loads (pressures, forces, etc.) can be added

Modal Analysis of Integrated Antenna PanelAntenna Panel

Results show Eienmode Shapes and Frequencies

Mode 1 Mode 2 Mode 11


Mode 1 Mode 2 Mode 11

hfss12 for advanced antenna applications

Documents

electrically insignificant details

2nd order basis

integrated antenna panel

sweep1 extra element lengt db

data link

design type

virtual prototype

rights reserved