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本文给出了设计最佳单边型波导滤波器的简明设计公式。这种滤波器采用一种均匀波导,没波导不等间隔上有膜片耦合串联短波导,这样大大减少了用普通技术满足单边带和单阴带技术指标所需的谐振器数量。给出了不用综合法就可以获得所需结构的车比雪夫和椭园函数滤波器的设计资料。本文介绍了用1/4波长和经过改进的3/4波长耦合的准低通知准高通进行设计的响应特性的计算机模拟结果。本文还给出了前种情况工作在 X 频段的五节车比雪夫滤波器的试验结果,其结果表明与理论值十分吻合。
This article gives a concise design formula for designing the best unilateral waveguide filter. This filter uses a uniform waveguide with no waveguide coupling at regular intervals with short waveguides in the waveguide, thus greatly reducing the number of resonators required to meet single-sideband and single-sideband specifications with conventional techniques. The design information of Chebyshev and elliptic function filter, which can get the required structure without using synthesis method, is given. This paper presents the computer simulation of the response characteristics of a design using a quasi-low pass with 1/4 wavelength and improved 3/4 wavelength coupling. This paper also gives the experimental results of the five-car Chebyshev filter operating in the X-band in the former case. The results show good agreement with the theoretical value.