在微波及毫米波濾波器中，梳形及交錯耦合共振濾波器應是面積最小的濾波器，本論文中主要是以交錯耦合共振濾波器做為研究基礎，設計出新型的交錯耦合共振器來實現小型化的帶通濾波器，其具有低通帶插入損耗、高截止帶阻絕能力以及陡峭的傳輸邊緣。在工作頻率為2.45GHz時，此新型的濾波器面積比典型的交錯耦合共振濾波器面積減少了 61 %。
在本論文中亦針對濾波器的饋入位置進行探討，一種可以增加兩個額外傳輸零點響應的對稱饋入架構已被發展出來。利用傳輸矩陣來分析饋入架構，應用在此新型的帶通濾波器之中，並實際量測濾波器的S參數以驗證設計之正確性。

In general, the combline and cross coupled resonator filters are two of the smallest size in both of microwave and millimeter wave filters. In this thesis, Base on the cross coupled resonator filter, to design a new type cross coupled resonator filter to miniaturize microstrip bandpass filter with low passband insertion loss, high stopband rejection, and sharp transmission edge. When the new type filter has a center frequency at 2.45GHz, we can achieve the size reduction of 61% compared with the typical cross coupled filter.
Secondly, the feed structure of filter has been investigated. A skew-symmetric feed structure, which can create two extra transmission zeros, has been proposed. This feed structure is analyzed by using transmission matrices, and apply the structure into the filter. We have measured the S-Parameter of all the filters to demonstrate the validity of the design method.

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