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A Ku-band RF-MEMS frequency-reconfigurable multimodal bandpass filter

Published online by Cambridge University Press:  24 April 2014

Adrián Contreras ,
Jasmina Casals-Terré ,
Lluís Pradell ,
Flavio Giacomozzi ,
Jacopo Iannacci  and
Miquel Ribó
Adrián Contreras
Affiliation:
Signal Theory and Communications Department, Technical University of Catalonia (UPC), Barcelona, Spain
Jasmina Casals-Terré
Affiliation:
Mechanical Engineering Department, Technical University of Catalonia (UPC), Barcelona, Spain
Lluís Pradell*
Affiliation:
Signal Theory and Communications Department, Technical University of Catalonia (UPC), Barcelona, Spain
Flavio Giacomozzi
Affiliation:
MEMS Research Unit, Fondazione Bruno Kessler (FBK), Trento, Italy
Jacopo Iannacci
Affiliation:
MEMS Research Unit, Fondazione Bruno Kessler (FBK), Trento, Italy
Miquel Ribó
Affiliation:
Engineering Department, La Salle – Ramon Llull University, Barcelona, Spain
*
Corresponding author: L. Pradell Email: pradell@tsc.upc.edu
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Abstract

In this paper, a uniplanar RF-MEMS second-order bandpass filter with reconfigurable center frequency is presented. It is based on quarter-wavelength slotline resonators and coplanar waveguide (CPW)-to-slotline multimodal immitance inverters (MIIs), which are reconfigured using RF-MEMS switchable CPW air-bridges (SABs). The filter can be adequately explained and designed using multimodal theory and circuit models. A surface micromachining process on high-resistivity silicon substrate was used to fabricate the filter. Experimental results show frequency reconfiguration from 12 to 13 GHz, maintaining the same relative bandwidth, and insertion losses of 4.6 and 4.7 dB, respectively.

Keywords

FiltersModelingSimulation and characterization of devices and circuitsPassive components and circuitsRF-MEMS and MOEMSSi-based devices and IC technologies
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 6 , Issue 3-4: European Microwave Week 2013 , June 2014 , pp. 277 - 285
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2014 

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References

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