窄缝条件下影响微波单缝衍射图样的主要因素

摘要

通过测量30 m m窄缝宽条件下微波单缝衍射图样，发现其主极大以及其它多处场强分布与理论图像不符。分别从单缝板边缘绕射、微波分光计底座反射和发射喇叭口干涉等方面定性探讨出现以上现象的原因，并由此提出一些改进方案。%By measuring the patterns of the microwave diffracted by a 30 mm slit ,it was found that the principal maximum and the other intensity distribution did not agree with the theoretical pre-diction .Thus the factors including edge diffraction ,plate reflection ,transmitting horn interference , etc .,were considered to explain the phenomenon qualitatively ,some improvements were proposed ac-cordingly .