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SAR testing upgrade 30 MHz to 6 GHz

August 2005

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RF transmitters used in close proximity to the human body must be evaluated against human exposure standards which set basic restrictions for the Specific Absorption Rate (SAR) of RF energy by any part of the human body. This may include two way radios, cellular phones, spread spectrum and Bluetooth devices, two way radios, wireless EFTPOS terminals, WLAN devices used in notebook/laptop computers. Virtually all devices exceeding the power threshold of 20 mW and used in close proximity to the human body must comply with SAR requirements.
 

Major Upgrade of SAR Test Facilities

EMC technologies commenced SAR testing in 1999 and is *NATA accredited for SAR testing to the latest Australian and international SAR standards and regulations. The scope of the NATA accreditation now includes EN50361, IEEE1528, the ACA EMR standard 2003 Schedules 1 and 2, and FCC OET65C 01/01. The new standard IEC62209 will shortly be added to the scope. SAR test capability has been extended to include measurement and validation for the most common frequencies between 30 MHz to 5.8 GHz. Continual investment in reference dipoles, flat phantoms and SAR measurement probes allows compliant head and body SAR measurements over most of the frequency range including the difficult bands at 150 MHz, 300 MHz, 1600 MHz, 2100 MHz, 3500MHz, 5 GHz, 5.2 GHz and 5.8GHz. The purchase of a fully optioned R&S CMU200 allows us to test virtually all mobile/cellular phones on the world market. The capability includes AMPS, GSM, EGSM, E-GPRS, CDMA, WCDMA, UMTS and most G2.5/G3 devices. This includes WLAN transmitters employed in Laptop PCs, Notebooks, Tablets and PDAs which utilise WLAN standards IEEE 802.11b, g, a and WiFi/WiMAX devices.

Comprehensive SAR facilities include:

• SAR Probes, tissue simulating liquids and validation dipoles cover the range 30 MHz to 5.8 GHz including;
  • 150 MHz, 250 MHz, 300MHz and 450 MHz Push to talk transmitters
  • 600-900 MHz wireless microphones
  • 835 MHz, 900 MHz, 1800/1900 GSM/EGSM/GPRS devices (EU and USA)
  • 1900/2100 W-CDMA/UMTS (3GPP) devices
  • 1900 MHz DECT devices
  • 1600 MHz Satellite phones
  • 2450 MHz Spread spectrum IEEE802.11b,g and Bluetooth devices
  • 3500 MHz (WiMAX) G3 devices
  • 5.2 GHz to 5.8 GHz WLAN transmitters, IEEE802.11a
  • Military and security transmitters including man-packs, push to talk and covert devices
• Rhode and Schwarz CMU 200 fully optioned for
  • 850/900/1800/1900 GSM/EGSM/GPRS/EGPRS etc.
  • CDMA/WCDMA/UMTS/ 3GPP
  • Upgradeable for New Technologies
• Two SAM phantoms allows efficient SAR testing for both Head and Body tissue, or for two frequency bands, without the delays due changing the tissue simulating liquid.
• Reference phantoms for system calibration and validation
• Large flat phantoms for SAR testing of large devices such as laptop computers with WLAN transmitters, or large handheld transceivers.
• Duplicated SAR probe and DAE (Data acquisition electronics) eliminates down time during annual calibration cycle.

Now into our seventh year of SAR testing and research and in conjunction with our close links with the world leaders in SAR research and measurement through a technical support agreement, our clients have access to authoritative technical support in all aspects of SAR compliance.

*Note: NATA has mutual recognition agreements with most accreditation bodies around the world including UKAS, A2LA, NVLAP, DAR, etc.

For more information visit EMC’s  website www.emctech.com.au

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