A tri-section stepped-impedance resonator for cross-coupled bandpass filters

Author

Zhang, Hualiang ; Chen, Kevin J.

Author_Institution

Electr. & Electron. Eng. Dept., Hong Kong Univ. of Sci. & Technol., Kowloon, China

Volume

15

Issue

6

fYear

2005

fDate

6/1/2005 12:00:00 AM

Firstpage

401

Lastpage

403

Abstract

We report a new tri-section stepped-impedance resonator (SIR) that features a short and low-impedance section inserted in a two-section SIR. The inserted section not only makes the resonator more compact, but also enables the flexibility of introducing cross coupling in a filter configuration. Using the tri-section SIR, a cascaded triplet bandpass filter is demonstrated, featuring sharp roll-off at the high edge of the passband.

Keywords

band-pass filters; coupled circuits; microstrip filters; resonator filters; SIR short low-impedance section; cascaded triplet bandpass filter; cross coupling; cross-coupled bandpass filters; fractional bandwidth; microstrip bandpass filters; passband high edge sharp roll-off; tri-section stepped-impedance resonator; Band pass filters; Bandwidth; Impedance; Microstrip filters; Microstrip resonators; Microwave filters; Passband; Radio frequency; Resonance; Resonator filters; Cascaded-triplet (CT) filter; fractional bandwidth (FBW); microstrip bandpass filters; stepped-impedance resonator(SIR);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2005.850475

Filename

1435437