微波近场测试中的位相校正

在微波近场测试中,为减少测试误差,可以在喇叭天线的口面处加一个微波透镜。本文以光学原理为基础,推导了微波透镜的计算公式。通过实验比较,使用微波透镜后测试结果明显改善,天线增益明显提高,使近场测试的结果更接近于远场测试的结果。

Phase-Correction in Near-Field Measurement by Microwave Method

Based on the opticai principle, formulas used for calculating and designing microwave lenses are derived in this paper. Several sample lenses have been made according to the above-mentioned formulas. The experimental results show that the measurement obtained is apparently improved, and the antenna gain greatly increased, therefore the efficiency is more close to that by the far-field measurement.