Performance of a configurable microstrip filter using triple mode resonator and RF-MEMS switches

Author

Lee, Ker Chia ; Su, Hieng Hieng ; Haldar, Manas Kumar

Author_Institution

Sch. of Eng., Comput. & Sci., Swinburne Univ. of Technol., Kuching, Malaysia

fYear

2010

fDate

9-11 Nov. 2010

Firstpage

1

Lastpage

4

Abstract

This paper presents a configurable bandpass filter using commercial RF MEMS switches in a compact triple-mode resonator. Before designing the filter, the effect of using the RF-MEMS switch on the resonant frequency of a simple hairpin resonator is studied. The insertion loss of the switch is measured. A three-pole Chebyshev bandpass filter with a fractional bandwidth of 20% at a center frequency of 0.95 GHz is designed and fabricated. With a biasing voltage of 25 V, the center frequency of the filter can be switched to 0.70 GHz. The fractional bandwidth of the filter changes from 20% to 10%. This filter exhibits low harmonic response in the stopband.

Keywords

band-pass filters; microstrip filters; microswitches; RF-MEMS switches; compact triple-mode resonator; configurable bandpass filter; configurable microstrip filter; frequency 0.7 GHz to 0.95 GHz; hairpin resonator; harmonic response; three-pole Chebyshev bandpass filter; triple mode resonator; voltage 25 V; Band pass filters; Frequency measurement; Microswitches; Microwave filters; Resonant frequency; Resonator filters; Transmission line measurements; Microstrip lines; RF-MEMS switch; compact filter; configurable bandpass filter; triple-mode resonator;

fLanguage

English

Publisher

ieee

Conference_Titel

Applied Electromagnetics (APACE), 2010 IEEE Asia-Pacific Conference on

Conference_Location

Port Dickson

Print_ISBN

978-1-4244-8565-9

Type

conf

DOI

10.1109/APACE.2010.5719765

Filename

5719765