Design of dual-band bandpass filters using stepped-impedance resonators

Author

Tsai, Lin-Chuan

Author_Institution

Dept. of Electron. Eng., Lunghwa Univ. of Sci. & Technol., Gueishan, Taiwan

Volume

1

fYear

2011

Firstpage

563

Lastpage

566

Abstract

In this paper, a new coupling configuration of the stepped impedance resonator (SIR) has been presented to design dual-band bandpass filters with the small circuit size. We design the filter with higher selectivity based on SIR directing-coupling, cross-coupling, input and output external quality factors. Through resonance characteristics of a SIR, the second resonant frequency can be tuned by adjusting structure parameters. The agreement between measured results and full-wave simulation prediction validates the feasible configuration of the proposed filters.

Keywords

Q-factor; band-pass filters; resonator filters; coupling configuration; cross-coupling; directing-coupling; dual-band bandpass filters; full-wave simulation prediction; input external quality factors; output external quality factors; second resonant frequency; stepped-impedance resonators; structure parameters; Couplings; Frequency measurement; Resonant frequency; cross-coupling; directing-coupling; external quality; stepped impedance resonator;

fLanguage

English

Publisher

ieee

Conference_Titel

Cross Strait Quad-Regional Radio Science and Wireless Technology Conference (CSQRWC), 2011

Conference_Location

Harbin

Print_ISBN

978-1-4244-9792-8

Type

conf

DOI

10.1109/CSQRWC.2011.6037012

Filename

6037012