Simultaneous EM measurement system using parallel modulated probe array

A simultaneous measurement method using parallel modulated probe array is proposed to measure the electromagnetic radiation. Each modulated probe is excited by a local signal with different frequency, so that the received IF signal contains different frequency components which indicate the relative magnitude of the RF signal at positions of the probes, and all the IF components are measured simultaneously by a broad-band microwave receiver. The configuration of the measurement system is described. The performance of the system is demonstrated by the measurement time and some experimental results such as the radiation pattern and the radiation efficiency of measured antennas