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.
Xinheng Detection 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
Table 2: Interphone
Table 3: PC
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 is a testing institution accredited by China National Accreditation Service for Conformity Assessment (CNAS), number: L17568. After years of development, BTF has electromagnetic compatibility laboratory, wireless communication laboratory, SAR laboratory, safety laboratory, reliability laboratory, battery testing laboratory, chemical testing and other laboratories. Has a perfect electromagnetic compatibility, radio frequency, product safety, environmental reliability, material failure analysis, ROHS/REACH and other testing capabilities. BTF Testing Lab is equipped with professional and complete testing facilities, an experienced team of testing and certification experts, and the ability to solve various complex testing and certification problems. We adhere to the guiding principles of "fairness, impartiality, accuracy, and rigor" and strictly follow the requirements of the ISO/IEC 17025 testing and calibration laboratory management system for scientific management. We are committed to providing customers with the highest quality service. If you have any questions, please feel free to contact us at any time.
Post time: Feb-19-2024
