平衡式數位移相器

Abstract

本篇論文提出以變換輸入模態來改變相位之相位轉換器，此相位轉換器在奇模與偶模訊號輸入時，相位不同，利用這種特性，我們可以設計出所需要轉換之相位角度。論文中提出90°, 45°, 22.5°角度的相位轉換器，並且利用四分之波長組抗轉換器來實現22.5度之相位轉換器。

In this thesis, phase shifters change phases by changing input signal mode are proposed. The insertion phase is different when the input signal is even and odd. Using this property, we can design the angle we want to change. In this thesis, three phase shifters, namely, 90°, 45°, 22.5° are proposed. Moreover, the high impedance of 22.5° phase shifter is realized by quarter wave transformer.