SAR, also known as Specific Absorption Rate, refers to the electromagnetic waves absorbed or consumed per unit mass of human tissue. The unit is W/Kg or mw/g. It refers to the measured energy absorption rate of the human body when exposed to radio frequency electromagnetic fields.
SAR testing is mainly aimed at wireless products with antennas within a distance of 20cm from the human body. It is used to protect us from wireless devices that exceed the RF transmission value. Not all wireless transmission antennas within a distance of 20cm from the human body require SAR testing. Each country has another testing method called MPE evaluation, based on products that meet the above conditions but have lower power.
SAR testing program and lead time:
SAR testing mainly consists of three parts: organizational validation, system validation, and DUT testing. Generally speaking, sales personnel will evaluate the testing lead time based on product specifications. And frequency. In addition, it is necessary to consider the lead time for testing reports and certification. The more frequent testing is required, the longer the testing time will be required.
BTF Testing Lab has SAR testing equipment that can meet the testing needs of customers, including urgent project testing needs. In addition, the testing frequency covers 30MHz-6GHz, almost covering and able to test all products on the market. Especially for the rapid popularization of 5G for Wi Fi products and low-frequency 136-174MHz products in the market, Xinheng Testing can help customers effectively solve testing and certification issues, enabling products to smoothly enter the international market.
Standards and regulations:
Different countries and products have different requirements for SAR limits and testing frequency.
Table 1: Mobile phones
|
Country |
European Union |
America |
Canada |
India |
Thailand |
|
Measuring Method |
EN50360 EN62209 EN62311 EN50566 |
ANSI C95.1 IEEE1528 47 CFR 2.1093 Refer to KDB and TCB files |
IEEE 1528 RSS-102 EN62209 |
ANSI C95.1 IEEE1528 47 CFR 2.1093 Refer to KDB and TCB files |
EN50360 EN62209 EN62311 EN50566 |
|
limit value |
2.0W/kg |
1.6W/kg |
1.6W/kg |
1.6W/kg |
2.0W/kg |
|
Average material |
10g |
1g |
1g |
1g |
10g |
|
Frequency（MHz） |
GSM-900/1800 WCDMA-900/2100 CDMA-2000
|
GSM-835/1900 WCDMA-850/1900 CDMA-800 |
GSM-835/1900 WCDMA-850/1900
|
GSM-900/1800 WCDMA-2100 CDMA-2000 |
GSM-900/1800 WCDMA-850/2100 |
Table 2: Interphone
|
Country |
European Union |
America |
Canada |
|
Measuring Method |
EN50360 EN62209 EN62311 EN50566 |
ANSI C95.1 IEEE1528 Refer to KDB and TCB files |
IEEE 1528 RSS-102 EN62209 |
|
Professional walkie talkie limits |
10W/Kg(50% duty cycle) |
8W/Kg(50% duty cycle) |
8W/Kg(50% duty cycle) |
|
Civilian walkie talkie limits |
2.0W/Kg(50% duty cycle) |
1.6W/Kg(50% duty cycle) |
1.6W/Kg(50% duty cycle) |
|
Average material |
10g |
1g |
1g |
|
Frequency（MHz） |
Very high frequency (136-174) Ultra high frequency (400-470) |
Very high frequency (136-174) Ultra high frequency (400-470) |
Very high frequency (136-174) Ultra high frequency (400-470) |
Table 3: PC
|
Country |
European Union |
America |
Canada |
India |
Thailand |
|
Measuring Method |
EN50360 EN62209 EN62311 EN50566 |
ANSI C95.1 IEEE1528 Refer to KDB and TCB files |
IEEE 1528 RSS-102 EN62209 |
ANSI C95.1 IEEE1528 Refer to KDB and TCB files |
EN50360 EN62209 EN62311 EN50566 |
|
limit value |
2.0W/kg |
1.6W/kg |
1.6W/kg |
1.6W/kg |
2.0W/kg |
|
Average material |
10g |
1g |
1g |
1g |
10g |
|
Frequency（MHz） |
BT WIFI-2.4G |
BT WIFI-2.4G,5G |
BT WIFI-2.4G |
BT WIFI-2.4G |
BT WIFI-2.4G |
| Note: GSM, WCDMA, CDMA, S-TDMA are the same as mobile phones. | |||||
Product scope:
Classified by product type, including mobile phones, walkie talkies, tablets, laptops, USB, etc;
Classified by signal type, including GSM, WCDMA, CDMA, S-TDMA, 4G (LTE), DECT, BT, WIFI and other 2.4G products, 5G products, etc;
Classified by certification type, including CE, IC, Thailand, India, etc., different countries have different specific requirements for SAR.
BTF Testing Lab, our company has electromagnetic compatibility laboratories, safety regulations Laboratory, wireless radio frequency Laboratory, battery Laboratory, chemical Laboratory, SAR Laboratory, HAC Laboratory, etc. We have obtained qualifications and authorizations such as CMA, CNAS, CPSC, VCCI, etc. Our company has an experienced and professional technical engineering team, which can help enterprises solve the problem. If you have relevant testing and certification needs, you can directly contact our Testing staff to obtain detailed cost quotations and cycle information!
Post time: Jun-20-2024
