body sar regulation in japan - ministry of internal ... · digital cordless telephone phs low power...

Body SAR regulation in Japan

Hiroyuki Togashi

Information and Communication Certification Conference of Japan（ICCJ)

Outline

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• MIC Test Procedure ≒ IEC 62209-2 ≠ US FCC • Summary of Test Procedure

• Testing Object • Exception • Simultaneous Transmissions • Module and SAR

• Summary of Certification • Radio Equipment to be certified • Issues of Certification

• Issues of the Manufacturer’s Responsibility of Design Conformance

• Responsibility of Certified Dealer

MIC Test Procedure ≒ IEC 62209-2 ≠ US FCC

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• Radio Law: Test Procedures required in Article 14-2 of Ordinance Regulating Radio Equipment are made by referring to IEC 62209-2. • It refers to the basic requirements of IEC 62209-2, but all is

not the same. • It can be said that it matches the test method of EU

• Are regulations of simultaneous transmissions not the same? • Are radio equipment to be certified not the same? (The

concept of certification ordinance is different from the scope of IEC 62209-2 )

• For detailed handling method, a guideline will be created at Registered Certification Body Council, ICCJ, etc..

MIC Test Procedure ≒ IEC 62209-2 ≠ US FCC

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Test Procedure as described in the notice to be effective on 2014.4.1 Details of how to decide the mode to be tested is not described

For a detailed test procedure, a guideline will be created at the committee of RCB Council. ICCJ, etc.. Standards of eliminating the test are currently under consideration.

Comparison of the Test Procedures between EU and FCC • Tissue Fluid

• Same as EU (Head・Body are also the same, but frequency range is different) • FCC: HEAD (Frequency range is different. Characteristics are same in the same

frequency band.) Body(Electrical characteristics are completely different.) • Limits

• Same as EU (Is the definition of palm the same?) • Simultaneous transmissions • Detailed test guidance for certain device form factors

JP/EU v.s. FCC Head Tissue Fluid

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HEAD Japan, EU US FCC

Frequency (MHz)

Relative permittivity (ε′r)

Conductivity (σ) (S/m)



150 52.3 0.76

300 45.3 0.87 45.3 0.87

450 43.5 0.87 43.5 0.87

835 41.5 0.90 41.5 0.90

900 41.5 0.97 41.5 0.97

915 41.5 0.98

1450 40.5 1.20 40.5 1.20

1610 40.3 1.29

1800~2000 40.0 1.40 40.0 1.40

2450 39.2 1.80 39.2 1.80

3000 38.5 2.40 38.5 2.40

5800 35.3 5.27

JP/EU v.s. FCC Body Tissue Fluid (1)

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BODY Japan, EU US FCC

Frequency (MHz)





30 55.0 0.75 150 52.3 0.76 61.9 0.80 300 45.3 0.87 58.2 0.92 450 43.5 0.87 56.7 0.94 750 41.9 0.89 835 41.5 0.90 55.2 0.97 900 41.5 0.97 55.0 1.05 915 55.0 1.06

1450 40.5 1.20 54.0 1.30 1610 53.8 1.40

1800~2000 40.0 1.40 53.3 1.52 2100 39.8 1.49 2450 39.2 1.80 52.7 1.95 2600 39.0 1.96 3000 38.5 2.40 52.0 2.73 3500 37.9 2.91

JP/EU v.s. FCC Body Tissue Fluid (2)

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BODY Japan, EU US FCC

Frequency (MHz)





4000 37.4 3.43 4500 36.8 3.94 5000 36.2 4.45

5200 36.0 4.66

5400 35.8 4.86 5600 35.5 5.07

5800 35.3 5.27 48.2 6.00

6000 35.1 5.48

JP/EU v.s. FCC Limits

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• Limit of JP/EU： 2W/kg ＠ 10g • Limit of FCC： 1.6W/kg ＠ 1g • There is no consistency at all in comparison.

Summary of Test Procedure

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Testing Object Article 14-2 of Ordinance Regulating Radio Equipment

HEAD SAR BODY SAR

Land Mobile Station (W-CDMA, CDMA, FD-LTE etc…）

←

Broadband Mobile Communication Access System, Land Mobile Station (WiMAX, TD-LTE)

←

Portable Mobile Earth Station (INMARSAT, THURAYA, Iridium)

←

Digital Cordless Telephone (Same housing)

Personal Handy Phone System (Same housing)

Low Power Data Communication System (Same housing) (WLAN, Bluetooth, ZigBee and etc…)

Summary of Test Procedure

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Test Procedure Article 14-2, Item 3 of Ordinance Regulating Radio Equipment Ministry of Internal Affairs and Communications Notification

No. Measurement methods of SAR at human head and measurement

methods of SAR at human body (except human head and palm).

Limits Human body except the limb and a human head ： 2W/kg The limbs ： 4W/kg


Exception （Same idea as EU） If the average power of radio waves emitted is 20mW or less

Object radio equipment Digital Cordless Telephone PHS Low Power Data Communication System

Radio equipment used more than 20cm from the human body To confirm the state that is normally used in writing to be submitted

for certification at the time of application.

There is no provision of the separation distance of the antenna. Simultaneous transmission is determined by the method described below.

Exception


Figure1. Distance to the antenna end surface from the bottom

Figure3. general use state (SAR shall be measured in this situation)

Figure 2. Antenna position (red frame)

90°

Side view

Front view

X cm

X cm

Example of Exception

JP Case Study(A study on Simultaneous transmission ) - Tablet/Pad ,10x15x0.9cm, with 3GPP, Wireless LAN & BT


The measurement side is not set up yet

Follows normal usage listed in the user’s manual

Six sides must be measured if not mentioned

10cm

15cm

18cm

WLAN

3GPP

Bluetooth

Edge 1

Edge 3

Edge 2

Edge 4

Simultaneous transmission is to be measured by the following methods. Method 1 Evaluation by sum of Maximum SAR Value : Easiest way, but most intensive. Method 2 Evaluation by selecting the highest SAR value : In case each result you get from

Method 1 are not similar, it will give you the accurate estimate value. This is a method of using the largest SAR value If a certain SAR level is less than 5% of the largest SAR value., use the largest SAR value.

Method 3 Evaluation by Three-Dimensional calculation SAR data Method 4 Evaluation by Three-Dimensional scanning

Above method is the same method as the EU.

Measurement side and the number of measurement


Aspects to carry out measurement will usually be decided upon submission of documentation for a construction design certification application.

About the number of measurement, sometimes may exceed several hundred times or more depending on the frequency (band), modulation method, and the used bandwidth, however guidance is expected to be made in

future by Registered Certification Body and ICCJ.

Module and SAR


Certification, including SAR, is possible for equipment (chassis & modules) with a defined antenna position.

～ such as USB dongle In cases where the module can not be certified with

SAR ： Guide lines should be established for follow up the utilized

method with the test results of equipment which has been already certified.

Future issues in the measurement


(SAR1 + SAR2)1.5 /R ≤ 0.04

Sum SAR (W/Kg) Minimum Separation 3.2 143 mm 2.8 117 mm 2.4 93 mm 2 71 mm

1.6 51 mm 1.4 41 mm 1.2 33 mm 1.0 25 mm 0.8 18 mm

For efficiency of the measurement, it should be made a standard such as SPLSR of the FCC in future

Summary of Certification


Radio Equipment to be certified

*1 Land Mobile Station, Broadband Mobile Communication Access System, Land Mobile Station, Portable Mobile Earth Station

*2 Digital Cordless Telephone, PHS, Low Power Data Communication System (WLAN, Bluetooth, ZigBee and etc…)

WWAN *1 WLAN *2 Necessity of Body SAR

Case I Installed Installed Necessary

Case II Installed N.A. Necessary

Case III N.A. Installed N.A.

PC, Tablet & etc...

Issues of Certification


WLAN

WWAN

RCB #: 737 Cert. #: 737ABCHJK

RCB #: 350 Cert. #: 350XYZ000

RCB #: 777 Cert. #: 777ACDGHK

Type specifications of PC, Tablet, etc.

Type specifications of WWAN

Type specifications of WLAN

「 Type specifications of WWAN」

「 Type specifications of WLAN」

「 Type specifications of SAR」

PC, Tablet & etc...

Issues of the Manufacturer’s Responsibility of Design Conformance


WLAN

WWAN

RCB #: 737 Cert. #: 737ABCHJK

RCB #: 350 Cert. #: 350XYZ000

RCB #: 777 Cert. #: 777ACDGHK

Type specifications of PC,Tablet, etc.

Type Specifications of WWAN

Type Specification of WLAN

「 Type specifications of WWAN」

「 Type specifications of WLAN」

「 Type specifications of SAR」

X

X

Responsibility of Certified Dealer


Certified by Certification Body

Duty of Compliance Inspection （Article 38-25-1）

Inspection Record Making, Preservation Duty （Article 38-25-2）

Affix Marking of Certification Number （ Article 38-26）

Shipping to Market

Applicant Duty

Thank you

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