設計具橢圓函數的雙頻帶通濾波器

Abstract

本文利用微小化髮夾式諧振腔和開迴路諧振腔，設計具有橢圓函數響應的交錯耦合雙頻濾波器，這兩種諧振腔皆視為步階阻抗諧振腔來分析說明。濾波器電路中，為了在兩個頻帶上分別得到諧振腔之間適當的耦合量，我們使用不同幾何尺寸的諧振腔來設計。本論文製作測量了四個電路，由結果得知模擬和量測非常地吻合。

Compact miniaturized hairpin resonators and open-loop resonators are used to design cross-coupled filters with a dual-passband response of elliptic function type. Both resonators are treated as stepped impedance resonators in analysis. In establishing appropriate couplings among the resonators at two design frequencies, the resonators are designed to have different geometric dimensions. Four filters are fabricated and measured. The results show a good agreement with the simulation.