帶通濾波器的濾波元件及帶通濾波電路

專利類型

發明

專利國別 (專利申請國家)

中華民國

專利申請案號

100142930

專利證號

I 499122

專利獲證名稱

帶通濾波器的濾波元件及帶通濾波電路

專利所屬機關 (申請機關)

國立彰化師範大學

獲證日期

2015/09/01

技術說明

一種帶通濾波器的濾波元件，設置於一屏蔽物中，並包含兩間隔排列且電連接於該屏蔽物，以作為該濾波元件的地的接地導電片、一間隔地位於該等接地導電片之間，用以共振而產生一通帶的共振單元及一傳輸單元。該傳輸單元具有一輸入埠、一輸出埠及兩分別電連接於該傳入埠及該輸出埠的傳輸帶線。藉此，該輸入埠與該共振單元之間存在兩傳遞訊號的路徑，使該共振單元共振出用以共同產生一通帶的一第一奇模、一第一偶模、一第二奇模及一第二偶模。 The filter has two types of modes, odd mode and even mode, and four resonance modes, which are two odd modes and two even modes, are appeared in the frequency response. An equivalent LC circuit model is developed to emulate the filter performance and to accelerate the design procedure. Full-wave electromagnetic software is used to optimize the filter’s structure. The source-load coupling in the I/O feed design renders this filter a cross-coupling effect which creates two transmission zeros by the passband edges for the signal selectivity enhancement. These zeros are controlled by the coupling strength between the source and load. With little effort, the design of this filter structure together with the developed LC circuit model also can easily shift to other frequency range with required bandwidth.

備註

本部(收文號1100036243)同意該校110年6月21日研發字第1100400284號函申請終止維護專利(彰師大)

連絡單位 (專責單位/部門名稱)

研究發展處

連絡電話

04-7232105轉1858

網址