比吸收率测量系统验证方法分析及扩展  

Analysis and Extension of Validation Methods for SAR Measurement Systems

作　　者：庞新华 周鑫[1] 武彤[1] 沈庆飞[1] 唐维[1] 李安香 穆晓彤 杨超 PANG Xinhua;ZHOU Xin;WU Tong;SHEN Qingfei;TANG Wei;LI Anxiang;MU Xiaotong;YANG Chao(National Institute of Metrology,Beijing 100029,China;BEIHANG UNIVERSITY,Beijing 100191,China;BTL Testing Group,Dongguan 523000,China)

机构地区：[1]中国计量科学研究院,北京100029 [2]北京航空航天大学,北京100191 [3]信宝检测有限公司,东莞523000

出　　处：《计量科学与技术》2024年第5期24-31,共8页Metrology Science and Technology

基　　金：国家重点研发计划(2022YFF0604805);广东省重点领域研发计划(2020B0404030006)。

摘　　要：比吸收率作为涉及无线通讯产品的电磁辐射人身安全性的必检参数,由于被测设备的更迭,其测量系统及测量方法也需要随之更新,故而对测量系统的验证提出了新的要求。基于对现行标准中验证方法的深入理解,通过电磁仿真及实验测量,对外推、探头线性度和探头调制响应三个传统验证项目的验证方法进行了测量分析,并结合新测试新需求,对验证方法进行了扩展。实测结果表明扩展验证方法具有可行性及稳定性。由于通过自研方法获得参考值,因此可以根据需要扩展验证方法,对验证点位等验证配置进行自定义设置,为研究新型及国产比吸收率测量系统的验证方法提供了技术支撑。Specific Absorption Rate(SAR)is a mandatory parameter for the personal safety of electromagnetic radiation involving wireless communication products.Due to the changing nature of the devices under test,the measurement system and methods need to be updated,which imposes new requirements for the validation of the measurement system.Based on an in-depth understanding of the validation methods in current standards,we analyze and measure the traditional validation methods for three steps:extrapolation routine verification,probe linearity verification,and modulation response verification.Using electromagnetic simulations and experimental measurements,we extended these validation methods to meet new testing requirements.The experimental results show that the extended validation methods are feasible and stable.As reference values were obtained through self-developed methods,the validation methods can be extended,allowing for customized validation configurations,such as validation points.This provides technical support for the research on validation methods for new and domestic SAR measurement systems.

关 键 词：计量学 比吸收率 移动终端 系统验证 Local SAR 

分 类 号：TB972[一般工业技术—计量学]