30MHz～1GHz可计算偶极子天线与天线系数量值溯源  

Traceability of Antenna Factor and Precision Calculable Dipole Antenna at 30 MHz -1 GHz

作　　者：孟东林[1] 高小珣[1] 谢鸣[1] 

机构地区：[1]中国计量科学研究院信电所,北京100013

出　　处：《计量学报》2011年第1期62-65,共4页Acta Metrologica Sinica

摘　　要：利用市售偶极子天线加s．参数适配器，完成了一套可计算偶极子天线；在30MHz～1GHz内，在不同频点、不同高度（2m、3．5m）和不同距离（10m、1．2m）条件下，该套偶极子天线场地衰减／插入损耗的仿真结果和实测结果的差别小于0．9dB；相应地，天线系数的仿真结果和实测结果的差别小于0．45dB。由于仿真结果提供了一种独立的、更为准确的参考值，因此以可计算偶极子天线为基础，可解决在天线系数校准中出现的天线系数与校准场地之间量值循环问题。这种方案借助于S-参数适配器，可把现有的一些偶极子天线转换为可计算偶极子天线。A set of calculable dipole antennas are developed from 30 MHz to 1 GHz, based on a set of commercially available precise dipole antennas and a set of specific S - parameters adaptors. The site insertion loss /site attenuation difference between simulating results and measurements is less than 0.9 dB for different antenna heights, separations and frequencies. The antenna factor difference is less than 0.45 dB accordingly. Because independent and more precise value can be computed from calculable dipole antennas, they are vital to solve the circular dilemma between OATS and antennas. The advantage of this solution is that calculable dipole antennas can be acquired based on some commercially available dipole antennas.

关 键 词：计量学 天线系数 可计算偶极子天线 电磁兼容 不确定度 

分 类 号：TB973[一般工业技术—计量学]