Design of compact quad-band bandpass filter using semi-lumped resonators

Author

Ko-Wen Hsu ; Jui-Hsiang Lin ; Wei-Chung Hung ; Wen-Hua Tu

Author_Institution

Dept. of Electr. Eng., Nat. Central Univ., Jhongli, Taiwan

fYear

2013

fDate

2-7 June 2013

Firstpage

1

Lastpage

4

Abstract

A compact quad-band bandpass filter using semi-lumped resonators is presented. The proposed filter is composed of four pairs of semi-lumped resonators, which consist of microstrip sections and lumped inductors. Compared with the conventional half-wavelength uniform-impedance resonator, the proposed resonator achieves a compact size due to the lumped inductor employed. Moreover, transmission zeros appear in the stopband to improve the passband selectivity. The proposed quad-band bandpass filter achieves not only compact size but also good passband selectivity.

Keywords

band-pass filters; microstrip filters; resonators; compact quad-band bandpass filter; half-wavelength uniform-impedance resonator; lumped inductors; microstrip sections; passband selectivity; semi-lumped resonators; transmission zeros; Band-pass filters; Inductance; Inductors; Microstrip filters; Passband; Resonant frequency; Resonator filters; Quad-band bandpass filter; semi-lumped element;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (IMS), 2013 IEEE MTT-S International

Conference_Location

Seattle, WA

ISSN

0149-645X

Print_ISBN

978-1-4673-6177-4

Type

conf

DOI

10.1109/MWSYM.2013.6697550

Filename

6697550