STS testing group

Sales E-mail : shoval.long@stsapp.com  Chinese



As radio equipment (such as mobile phones) in the world wide popularity, more and more government departments, telecommunications regulatory agencies and other requirements to reduce electromagnetic radiation to a suitable level.
STS to meet the urgent needs of the majority of mobile phone manufacturers, the latest introduction of the United Kingdom SATIMO company mobile phone electromagnetic energy absorption ratio (SAR) test system. The test system, in full compliance with IEEE / IEC / EN and the United States ANSI SAR standards, with fast, accurate, safe and efficient features, but also the world's top laboratories use the most widely recognized SAR test system. The system test frequency range of 6GHz, can be for GSM, CDMA, WLAN and other types of products (not limited to mobile phones) for certification testing.
With the development of information technology and manufacturing industry, the public in the enjoyment of wireless communications equipment to bring a variety of convenience, but also increasingly concerned about the wireless communication terminal electromagnetic radiation on human health impact;
European, American, Australian, New Zealand, Japan, Korea and Taiwan have developed relevant directives, technical regulations and mandatory regulations for radio frequency and microwave radiation management in the region or in the country, and the government has been very important to the wireless communications terminal. Standard;
Many countries, including China, have asked mobile terminal manufacturers to mark SAR-related technical specifications and user guidelines in product packaging and / or brochures.
 
★ Specific Absorption Rate SAR (Specific Absorption Rate)

SAR definition: the role of the external electromagnetic field, the body will produce induced electromagnetic field. As the body of various organs are depleted medium, so the body of electromagnetic fields will produce current, resulting in absorption and dissipation of electromagnetic energy. Biological technology commonly used in SAR to characterize this physical process.
The significance of SAR is the unit power of the human body absorbed or consumed by the electromagnetic power, in W / kg. It can also be expressed that the differential value of the energy element (dW) versus time that is absorbed (dissipated) by the mass fraction (dm) of the volume (dV) of the given density (ρ) is SAR, as follows:
SAR can also be obtained by any of the following formulas:
Among them: SAR - Specific absorptivity in W / kg;
E - Rms value of electric field strength in tissue, in V / m;
Σ - dielectric conductivity in S / m;
Ρ;
- the specific heat capacity of the tissue in units of J / kg and K;
- the initial temperature of the tissue cells, in K / s
 
★ FCC certification

Limit
ANSI / IEEE C95.1-1999; C95.3: 1.6W / Kg (1g Average)
FCC CFR 47 Part 2.1091, 2.1093
Measurement methods
IEEE 1528-2003 (head method);
OET 65 (body part method);
FCC KDB file


Whole body average
Local specific parts
Hand, wrist, foot, ankle and other acral position
Career
0.4W / Kg
8.0W / Kg
20W / Kg
public
0.08 W / Kg
1.6W / Kg
4.0W / Kg


★ CE certification

Limit
EN 50360  (head limit): 2.0W / Kg (10g Average)
EN 50566  (body limit): 2.0W / Kg (10g Average)
Test Methods
EN 62209-1  (head method standard);
IEC 62209-2  (Body Method Standard)


Whole body average
Local specific parts
Hand, wrist, foot, ankle and other acral position
Career
0.4W / Kg
10.0W / Kg
20W / Kg
public
0.08 W / Kg
2.0W / Kg
4.0W / Kg

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