SAR测量中系统验证的测量与分析

Measurement and Analysis of System Verification in SAR Measurement

随着手机等含有射频发射天线的物品在人们生活中逐渐普及,在设计过程中就必须考虑到电磁能量吸收比值(SAR)。该指标的大小能够衡量射频发射器不会对人体产生危害,保证电磁安全,因此是在制作发射器时非常重要的因素。为了保证SAR测量的准确性,在测量系统软件被更改升级,或硬件设备需要调整时,需要及时进行SAR系统验证。本文通过六个步骤进行SAR系统验证,测量结果均符合测试规定中的指标,能够验证完整测量系统的精度符合要求。

With the increasing popularity of items containing radio frequency transmitting antennas such as mobile phones, the specific absorption rate (SAR) must be considered in the design process. The size of this indicator can measure that the RF transmitter will not cause harm to human body and ensure electromagnetic safety, so it is a very important factor when making the transmitter. In or-der to ensure the accuracy of SAR measurement, when the measurement system software is changed or upgraded, or the hardware equipment needs to be adjusted, SAR system verification needs to be carried out in a timely manner. In this paper, SAR system verification is carried out in six steps, and the measurement results are in line with the indicators specified in the test, which can verify that the accuracy of the complete measurement system meets the requirements.