高电压技术2017，Vol.43Issue(12)：3994-3999,6.DOI:10.13336/j.1003-6520.hve.20171127024
混波室时频域综合法天线效率测试技术
Measurement Method for Antenna Efficiency Based on Time & Frequency Domain Measurement in Reverberation Chamber
摘要
Abstract
In order to test the antenna efficiency accurately,measurement method for antenna efficiency based on the time & frequency domain measurement in a reverberation chamber (RC) is improved in this paper.By using the vector network analyzer (VNA) with a time domain option,the time constant and insertion loss of a RC can be measured and calculated.When measuring the time constant of a RC,the bandpass impulse should be used to make sure that the measurement results can be compared with continuous wave (CW) results taken at a specific frequency.When doing the antenna impedance mismatch correction in frequency domain,the S11 of transmitting antenna should be measured in a RC,and the S22 of receiving antenna should be measured in free space.The antenna efficiency testing error caused by the nonzero pulse bandwidth is evaluated,which shows that 300 MHz pulse bandwidth will lead to an error of 0.11 dB.The simulation and measurement results show that when the testing frequency range is from 3 GHz to 8.5 GHz,the maximum difference between the testing and simulating results is 0.295 dB.It shows that antenna efficiency can be measured accurately with the method proposed in this paper.关键词
天线效率/时域测试/插入损耗/混波室/阻抗失配修正Key words
antenna efficiency/time domain measurement/insertion loss/reverberation chamber/impedance mismatch correction引用本文复制引用
周忠元,周香,沈博文..混波室时频域综合法天线效率测试技术[J].高电压技术,2017,43(12):3994-3999,6.基金项目
技术基础科研项目(YXDND20141BZ02).Project supported by Fundamental Research Program(YXDND20141BZ02). （YXDND20141BZ02）
