A Microstrip SIR Dual-Mode Bandpass Filter with Simultaneous Size Reduction and Spurious Responses Suppression

Author

Choi, Wai-Wa ; Tam, Kam-Weng

Author_Institution

Wireless Commun. Lab., Univ. of Macau, Macao

fYear

2008

fDate

14-15 Dec. 2008

Firstpage

116

Lastpage

119

Abstract

A novel miniaturized microstrip dual-mode bandpass filter with simultaneous size reduction and spurious responses suppression is proposed. In this new filter structure, the stepped-impedance resonator (SIR) technique is used to not only shorten the resonator size but also suppress its spurious responses. A prototype dual-mode bandpass filter centered at 1.6 GHz with 3% FBW is designed and experimentally characterized. This new filter achieves 33% size diminution when compared with the conventional structure. In addition, spurious responses at 2f₀ and 3f₀ are suppressed by 20 dB and 18 dB respectively.

Keywords

band-pass filters; microstrip filters; resonator filters; frequency 1.6 GHz; miniaturized microstrip dual-mode bandpass filter; size reduction; spurious response suppression; stepped-impedance resonator; Arm; Band pass filters; Conferences; Filtering theory; Impedance; Microstrip components; Microstrip filters; Microstrip resonators; Microwave Theory and Techniques Society; Resonator filters; Dual-Mode Filter; Size Reduction; Spurious Responses Suppression; Stepped-Impedance;

fLanguage

English

Publisher

ieee

Conference_Titel

Art of Miniaturizing RF and Microwave Passive Components, 2008. IMWS 2008. IEEE MTT-S International Microwave Workshop Series on

Conference_Location

Chengdu

Print_ISBN

978-1-4244-2876-2

Electronic_ISBN

978-1-4244-2877-9

Type

conf

DOI

10.1109/IMWS.2008.4782276

Filename

4782276