扩大滤波器调谐范围的自动补偿法

Auto-Compensation-Method Used to Extend the Tuning Range of Filters

提出一种扩大同轴线型机械调谐滤波器调谐范围的新方法─—自动偿法。能将同轴线型机械调谐滤波器的调谐范围从５～２０％满意地扩展到倍频程￣［１］；此法不影响在调谐范围内对带宽的控制，不增加滤波器的体积，甚至对谐振器的品质因数也无明显的影响，同时给出了几种应用实例。

This paper discusses a new method of increasing tuning range of the coaxmechanical tuning filter,Auto-Compensation-Methed,which can extend the tuning range of the coaxmechanical tuning filterfrom 5%～20% to double frequency range pleasantly￣[1]. There will be no harmful effects for controllingbandwith of the filter.This method will not increase original volume of the filter.Even for the influences ofresonator Q,it is obvious. some applied examples are given in this poper as well.