Title :
A novel 2-pole MEMS tunable bandpass filter for satellite communication applications
Author :
Sabbagh, Sadegh ; Akbarzadeh, Alireza ; Mofidi, Ashkan ; Mafinezhad, K.
Author_Institution :
Integrated Circuit Lab., Ferdowsi Univ. of Mashhad, Mashhad, Iran
Abstract :
Two low loss, high performance tunable micro-electromechanical filters have been investigated for communications and satellite applications. The 2-pole bandpass filter including two short folded resonators and two transmission zeros is considered. The folded resonators result in a small size of 2.4 × 2 mm2. Two tunable capacitor switch banks of MEMS switches are used to tune the center frequency. The first proposed switches are cantilever series switches and the second switches are shunt switches. The tuning range is from 4.075 GHz to 6.3 GHz with a bandwidth of 4% (200 MHz). The results show an insertion loss of 0.7 dB and return loss more than 24 dB over the tuning range of 44%.
Keywords :
band-pass filters; cantilevers; micromechanical resonators; microstrip filters; microswitches; satellite communication; varactors; 2-pole MEMS tunable bandpass filter; 2-pole bandpass filter; MEMS switches; bandwidth; bandwidth 200 MHz; cantilever series switches; center frequency; frequency 4.075 GHz to 6.3 GHz; insertion loss; loss 0.7 dB; return loss; satellite communication applications; short folded resonators; shunt switches; transmission zeros; tunable capacitor switch banks; tunable microelectromechanical filters; tuning range; Band-pass filters; Filtering theory; Micromechanical devices; Microwave filters; Resonator filters; Switches; Tuning; Cantilever and Shunt switches; MEMS varactors; Microstrip filters; RF MEMS; Tunable bandpass filter;
Conference_Titel :
Electrical Engineering (ICEE), 2013 21st Iranian Conference on
Conference_Location :
Mashhad
DOI :
10.1109/IranianCEE.2013.6599545
