A dual-band switchable bandpass filter using connected-coupling mechanisms

Author

Shih-Fong Chao ; Che-You Kuo ; Wei-Cheng Lin ; Wei-Ru Li ; Pu-Hua Deng

Author_Institution

Nat. Kaohsiung Marine Univ., Kaohsiung, Taiwan

fYear

2014

fDate

6-9 Oct. 2014

Firstpage

941

Lastpage

944

Abstract

In this paper, a dual-band switchable bandpass filter using switchable connected-coupling lines is presented. The switchable connected-coupling line is formed by embedding a RF traveling-wave switch into a connected-coupling line. In thru state, the switchable connected-coupling line serves as an admittance inverter to provide adequate coupling for a bandpass response. In isolated state, the switchable line acts as a RF switch to cut off the coupling path to achieve a high isolation. A switchable dual-band filter operating at 1.5 and 2.5 GHz was designed and fabricated to validate the design concept.

Keywords

UHF filters; band-pass filters; coupled circuits; invertors; microwave filters; switched capacitor filters; RF traveling-wave switch; admittance inverter; bandpass response; connected-coupling mechanisms; design concept; dual-band switchable bandpass filter; frequency 1.5 GHz; frequency 2.5 GHz; microwave multipassband bandpass filters; switchable connected-coupling lines; Couplings; Dual band; P-i-n diodes; Passband; Resonant frequency; Switches; Switching circuits;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Conference (EuMC), 2014 44th European

Conference_Location

Rome

Type

conf

DOI

10.1109/EuMC.2014.6986591

Filename

6986591