Simultaneous Electromagnetic Measurement Using a Parallel Modulated Probe Array
Simultaneous Electromagnetic Measurement Using a Parallel Modulated Probe Array
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DOI：
10.1109/temc.2007.893330
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发表时间：
2007-06
影响因子：
2.1
通讯作者：
Qiang Chen;K. Sawaya;T. Habu;R. Hasumi
中科院分区：
文献类型：
--
作者：
Qiang Chen;K. Sawaya;T. Habu;R. Hasumi
提出了一种利用平行调制探头阵列同时测量不同位置天线辐射电磁场的方法。每个调制探头由具有不同频率的本地信号激励，使得接收到的中频（IF）信号包含指示射频信号在探头位置处的相对幅度的不同频率分量，并且所有IF分量由宽带微波接收器同时测量。研究了本振信号对接收到的中频信号的影响以及探头阵列与被测天线之间的相互作用。通过测量天线的辐射方向图，证明了该方法的准确性。基于该方法研制了一套三维天线辐射测量系统。通过测量天线的辐射效率来验证系统的性能。
A simultaneous measurement method using a parallel modulated probe array is proposed to measure the electromagnetic field radiated by antennas at different locations simultaneously. Each modulated probe is excited by a local signal with different frequency, so that the received intermediate frequency (IF) signal contains different frequency components which indicate the relative magnitude of the radio-frequency signal at positions of the probes, and all the IF components are measured simultaneously by a broadband microwave receiver. The effect of the local signal on the received IF signal and interaction effect between the probe array and the measured antenna are investigated. The accuracy of the method is shown by measuring the antenna radiation pattern. A 3D antenna radiation measurement system based on the present method is also developed. The performance of the system is demonstrated by measuring the radiation efficiency of antennas.