Abstract

The paper proposes new methods of parametric and structural-parametric synthesis of resonators that contain multiple transmission line segments of the same length. These methods allow to optimize resonators of different configurations and with different characteristic impedances of line segments Z_0i. Optimal resonators are those that have the minimum ratio m = Z_0max/Z_0min for a given ratio between critical frequencies (poles and zeros of input impedance). Parametric synthesis refers to stepped impedance resonators (SIR), whose composite segments are oriented along one straight line. Structural-parametric synthesis is applied to resonators of a more general kind, which contain open and short-circuited stubs. Parametric synthesis made it possible to optimize some SIRs that have a useful relationship between critical frequencies. Resonators of more complex configuration are synthesized using structural-parametric synthesis. Their parameters significantly exceed SIR. This is due to the fact that in structural-parametric synthesis the possibilities of choosing the best solution are much wider. The authors proposed a microstrip bandpass filter (BPF) with synthesized resonators, which provide the ratio of the first two resonant frequencies 6.84 and wide stopband at m = 2.2.

中文翻译：

---

传输线可比部分的分布式谐振器

摘要

本文提出了包含多个相同长度传输线段的谐振器参数和结构参数综合的新方法。这些方法允许优化具有不同配置并且具有线段Z _0i的不同特征阻抗的谐振器。最佳谐振器是那些具有最小比率m = Z _0max / Z _0min的谐振器对于临界频率（输入阻抗的极点和零点）之间的给定比率。参数合成是指步进阻抗谐振器（SIR），其复合段沿一条直线定向。结构参数综合应用于更普通的谐振器，该谐振器包含开路和短路的短截线。通过参数综合，可以优化某些在关键频率之间具有有用关系的SIR。使用结构参数合成来合成更复杂配置的谐振器。它们的参数大大超过了SIR。这是由于以下事实：在结构参数综合中，选择最佳解决方案的可能性更加广泛。作者提出了一种具有合成谐振器的微带带通滤波器（BPF），m = 2.2。