A new property of tunable lumped-distributed circuits, namely, the intersection effect of resonant regions of two resonators with variable capacitors, is observed. As is known, the resonant regions of widely used resonators with varactors are separated by frequency intervals from each other. The construction of the proposed resonators is based on the resonance equations. One resonator is a loop hairpin stepped-impedance resonator with one capacitor. In this resonator, a controlled regime of dual-mode oscillations is realized, when the even and odd modes of the oscillations can change places. For this a one variable capacitor is used only. Another resonator is a symmetrical stepped-impedance resonator with two capacitors at the ends. Its resonance regions for several oscillations with frequencies ${f} _{0}$ , ${f} _{1}$ , ${f} _{2}$ intersect each other. This effect allows tuning in a very wide frequency range with simultaneous use of these oscillations. The results of the measurements and simulation for the reconfigurable microstrip dual-mode filter with one capacitor are presented.

中文翻译：

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具有交叉谐振区域的传输线可调谐谐振器

观察到可调集总分布式电路的一个新特性，即两个谐振器的谐振区与可变电容器的交叉效应。众所周知，广泛使用的带有变容二极管的谐振器的谐振区域彼此隔开频率间隔。所提出的谐振器的构造基于谐振方程。一种谐振器是带有一个电容器的环形发夹式阶梯阻抗谐振器。在该谐振器中，当振荡的偶数和奇数模式可以改变位置时，实现了双模振荡的受控状态。为此，仅使用一个可变电容器。另一个谐振器是对称的阶梯阻抗谐振器，两端有两个电容器。几种频率振荡的共振区 ${f} _{0}$ , ${f} _{1}$ , ${f} _{2}$ 相互交叉。这种效果允许在非常宽的频率范围内调谐，同时使用这些振荡。给出了具有一个电容器的可重构微带双模滤波器的测量和仿真结果。