在进行高功率微波(HPM)辐射场测量时,测量天线的极化匹配对测量精度影响较大.为提高测量精度,介绍一种微带圆极化阵列天线,采用功分器作为馈电网络,获得了小于1 dB的轴比,与非阵列圆极化微带天线相比,使轴比降低约1 dB.因此,当采用该圆极化阵列天线测量线极化微波的远场辐射时,使极化失配对测量结果的影响由±13%降至± 3.6%左右.%The polarization matching of measurement antenna has great impact on measurement accuracy while measuring the radiation field of high power microwave(HPM). A circularly polarized microstrip array antenna is introduced to improve the measurement accuracy. Taking power divider as feed network,the axial ratio of better than 1 dB is acquired. Compared with cir-cularly-polarized microstrip antenna with non-array,this method makes the axial ratio reduce by about 1 dB. When the array an-tenna is used to measure far field radiation of the linear polarized microwave,the influence of polarization mismatching on the measuring results is reduced from ±13% to ±3.6% approximately.
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