Capacitance-Tunable Microwave Resonators with Intersecting Resonance Regions

摘要

The effect of intersection of the resonance regions of neighboring oscillations in resonators formed of transmission-line sections with capacitive tuning is revealed. This effect takes place in stepped resonators with two capacitors. It makes possible a significant expansion of the continuous frequency tuning band by means of the use of several neighboring resonances. It is shown that, if the filter operates at the first three resonance frequencies and values of two capacitances vary in the interval 1:10, the continuous frequency tuning band can exceed two octaves.