MULTI-BAND FILTER

A multi-band filter includes a circuit board, a first resonator, a second resonator, and a coupling element configured to couple the first resonator with the second resonator. The coupling element includes a first coupling capacitor, a second coupling capacitor, a first short-circuited stub and a se...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: TU, Kun Yen, TSAI, Meng-Hua, LEE, Weiting, WANG, Sin-Siang
Format: Patent
Sprache:eng
Schlagworte:
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Beschreibung
Zusammenfassung:A multi-band filter includes a circuit board, a first resonator, a second resonator, and a coupling element configured to couple the first resonator with the second resonator. The coupling element includes a first coupling capacitor, a second coupling capacitor, a first short-circuited stub and a second short-circuited stub. The first coupling capacitor has two terminals electrically connected to the first portion of the first resonator and the first portion of the second resonator respectively. The second coupling capacitor has two terminals electrically connected to the second portion of the first resonator and the second portion of the second resonator respectively. The first short-circuited stub is electrically connected to the first coupling capacitor and a ground plane. The second short-circuited stub is electrically connected to the second coupling capacitor and a ground plane.