本文介绍了甚高频和超高频使用的简单的小型化窄带椭园函数滤波器的设计方法。这是从标准的低通滤波器出发,经过电抗变换变成带通滤波器。它们均是由串联谐振电路组成,以等效谐振器来代替这些谐振电路。在此采用的谐振器是使用特性阻抗高的螺旋线,或者其线路的输入、输出端用电容耦合。前者的特点是构造简单,设计容易:后者体积小,能够实现任意的谐振器。其体的设计例子表明,其特性与集中常数电路的计算值非常一致。实验也证明了这一点。 This article describes the design of a simple miniaturized narrowband elliptic function filter for VHF and UHF applications. This is from the standard low-pass filter, through the reactance into a band-pass filter. They are all made up of series resonant circuits that replace these resonant circuits with equivalent resonators. The resonator used here is a spiral with high characteristic impedance or its input and output of the line are capacitively coupled. The former is characterized by simple structure, easy to design: the latter is small, can achieve any resonator. The design example of its body shows that its characteristics are in good agreement with those of the lumped constant circuit. Experiments also proved this point.