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本文给出平面电路波导带通滤波器的机助设计程序。此程序是根据微波滤波器综合理论以及波导中纵向膜片等效参量的分析方法设计的。本程序能给出滤波器的全部几何尺寸,包括纵向膜片的个数、膜片的宽度及相邻两膜片间的距离。由使用者指定的参数为:波导的宽度,膜片的厚度,通带的边缘频率,通带内插入衰减的波纹,阻带内特定频率的最低插入衰减。本程序使用BASIC语言。在DJS—131机上对多个X波段波导带通滤波器进行了计算,样品在实验室中进行了测试。试验结果与事前给定的技术指标十分符合。
This paper presents a plane circuit waveguide band-pass filter-assisted design process. This procedure is based on the comprehensive theory of microwave filters and the analysis of longitudinal diaphragm equivalent parameters in waveguides. The program can give all the filter geometry, including the number of longitudinal films, the width of the film and the distance between two adjacent films. The parameters specified by the user are the width of the waveguide, the thickness of the diaphragm, the edge frequency of the passband, the attenuation of the ripple inserted into the passband, and the minimum insertion attenuation for a particular frequency within the stopband. This program uses the BASIC language. Several X-band waveguide bandpass filters were calculated on the DJS-131 and the samples were tested in the lab. The test results are in good agreement with the technical specifications given in advance.