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
•
•
•
•
•
Summary of Certification
•
•
•
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Testing Object
Exception
Simultaneous Transmissions
Module and SAR
Radio Equipment to be certified
Issues of Certification
Issues of the Manufacturer’s Responsibility of Design
Conformance
Responsibility of Certified Dealer
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MIC Test Procedure
•
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
•
•
•
≒ IEC 62209-2
≠ US FCC
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..
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MIC Test Procedure

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..


≒ IEC 62209-2
≠ US FCC
Standards of eliminating the test are currently under consideration.
Comparison of the Test Procedures between EU and FCC
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Tissue Fluid
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•
•
Limits
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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.)
Same as EU (Is the definition of palm the same?)
Simultaneous transmissions
Detailed test guidance for certain device form factors
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JP/EU v.s. FCC Head Tissue Fluid
HEAD
Frequency
(MHz)
Japan, EU
Relative permittivity
(ε′r)
US FCC
Conductivity (σ)
(S/m)
150
Relative permittivity
(ε′r)
Conductivity (σ)
(S/m)
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
41.5
0.98
40.5
1.20
40.3
1.29
915
1450
40.5
1.20
1610
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
35.3
5.27
5800
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JP/EU v.s. FCC Body Tissue Fluid (1)
BODY
Japan, EU
US FCC
Frequency
(MHz)
Relative permittivity
(ε′r)
Conductivity (σ)
(S/m)
30
150
300
450
750
835
900
915
1450
1610
1800~2000
2100
2450
2600
3000
55.0
52.3
45.3
43.5
41.9
41.5
41.5
0.75
0.76
0.87
0.87
0.89
0.90
0.97
40.5
1.20
40.0
39.8
39.2
39.0
38.5
1.40
1.49
1.80
1.96
2.40
3500
37.9
2.91
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Relative permittivity
(ε′r)
Conductivity (σ)
(S/m)
61.9
58.2
56.7
0.80
0.92
0.94
55.2
55.0
55.0
54.0
53.8
53.3
0.97
1.05
1.06
1.30
1.40
1.52
52.7
1.95
52.0
2.73
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JP/EU v.s. FCC Body Tissue Fluid (2)
BODY
Japan, EU
US FCC
Frequency
(MHz)
Relative permittivity
(ε′r)
Conductivity (σ)
(S/m)
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
6000
35.1
5.48
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Relative permittivity
(ε′r)
Conductivity (σ)
(S/m)
48.2
6.00
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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.
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Summary of Test Procedure

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…)
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Summary of Test Procedure

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
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Exception

Exception （Same idea as EU）
 If the average power of radio waves emitted is 20mW or less

Object radio equipment




Radio equipment used more than 20cm from the human body


Digital Cordless Telephone
PHS
Low Power Data Communication System
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.
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Example of Exception
Side view
90°
X cm
Figure1. Distance to the antenna end surface from the bottom
X cm
Front view
Figure3. general use state
(SAR shall be measured in this situation)
Figure 2. Antenna position (red frame)
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JP Case Study(A study on Simultaneous transmission )
- Tablet/Pad ,10x15x0.9cm, with 3GPP, Wireless LAN & BT


Edge 1
WLAN
18cm
15cm
Edge 2
Edge 4

The measurement side is
not set up yet
Follows normal usage
listed in the user’s
manual
10cm
Six sides must be
measured if not
mentioned
3GPP
Bluetooth
Edge 3

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.
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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.
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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.
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Future issues in the measurement
For efficiency of the measurement, it should be
made a standard such as SPLSR of the FCC in future
(SAR1
+ SAR2)1.5 /R ≤ 0.04
Sum SAR (W/Kg)
3.2
2.8
2.4
2
1.6
1.4
1.2
1.0
0.8
Minimum Separation
143 mm
117 mm
93 mm
71 mm
51 mm
41 mm
33 mm
25 mm
18 mm
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Summary of Certification

Radio Equipment to be certified


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.
*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…)
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Issues of Certification
RCB #: 737
Cert. #: 737ABCHJK
Type specifications of WWAN
Type specifications of
PC, Tablet, etc.
RCB #: 350
Cert. #: 350XYZ000
WWAN
Type specifications of WLAN
WLAN
PC, Tablet & etc...
RCB #: 777
Cert. #: 777ACDGHK
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「 Type specifications of
WWAN」
「 Type specifications of
WLAN」
「 Type specifications of
SAR」
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Issues of the Manufacturer’s
Responsibility of Design Conformance
RCB #: 737
Cert. #: 737ABCHJK
Type Specifications of WWAN
Type specifications of
PC,Tablet, etc.
RCB #: 350
Cert. #: 350XYZ000
WWAN
X
Type Specification of WLAN
WLAN
PC, Tablet & etc...
X
RCB #: 777
Cert. #: 777ACDGHK
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「 Type specifications of
WWAN」
「 Type specifications of
WLAN」
「 Type specifications of
SAR」
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Responsibility of Certified Dealer
Certified by Certification Body
Applicant Duty
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
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Thank you
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