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本文利用横向谐振法结合Fourier变换技术严格分析了一般E面鳍形膜片不连续性。在距离不连续性参考面以外的适当地方,置入两个理想短路面,从而构成封闭的谐振腔。根据横向谐振条件,建立不连续性等效电路参量与谐振状态下的短路面位置的关系,短路面位置利用Fourier,变换技术确定。文中首次给出了不对称双侧鳍形膜片不连续性的等效电路参量曲线,设计和试制了两个X波段E面带通滤波器实验样品,测试结果与设计指标符合良好。
In this paper, the transverse resonance method combined with the Fourier transform technique is used to analyze the discontinuities of the general E-surface fin-shaped diaphragm. In an appropriate place outside the discontinuity reference plane, two ideal short-circuit planes are placed to form a closed resonator. According to the transverse resonance conditions, the relationship between the discontinuous equivalent circuit parameters and the position of the short-circuited surface under the resonant condition is established. The position of the short-circuited surface is determined by Fourier transform. For the first time, the equivalent circuit parameter curve of the discontinuity of the asymmetrical bilateral fin is presented. Two experimental samples of X-band E-band bandpass filters are designed and fabricated. The test results are in good agreement with the design specifications.