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Frequency and bandwidth control of switchable microstrip bandpass filters using RF-MEMS ohmic switches

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Brito Brito, Zabdiel
Llamas, Ignacio
Pradell i Cara, LluísMés informacióMés informacióMés informació
Giacomozzi, Flavio
Colpo, Sabrina
Document typeConference report
Defense date2013
Rights accessRestricted access - publisher's policy
Attribution-NonCommercial-NoDerivs 3.0 Spain
Except where otherwise noted, content on this work is licensed under a Creative Commons license : Attribution-NonCommercial-NoDerivs 3.0 Spain
Abstract
In this paper a reconfigurable bandpass filter is designed using ohmic-contact cantilever-type Micro Electro Mechanical Systems (MEMS) switches., Tthe filter can switch between two different states with a center frequency tunable range of 13 % in C band. The topology allows achieving two accurate center frequencies, each associated with a precisely defined bandwidth, using six MEMS ohmic-switches. The design carefully takes into account the external quality factor for both filter states to ensure a good impedance match at each frequency. Coupling coefficients and resonator lengths produce the bandwidths and center frequencies required by design specifications. The filter is designed to have center frequencies of 5.5 and 6.2 GHz, with a fractional bandwidth (FBW) of 5 and 3 %, respectively. Filter specifications were successfully met with the proposed topology. The filter was fabricated on a quartz substrate and measured responses are in good agreement with simulations
CitationBrito, Z. [et al.]. Frequency and bandwidth control of switchable microstrip bandpass filters using RF-MEMS ohmic switches. A: International Symposium on RF MEMS and RF Microsystems. "MEMSWAVE 2013: proceedings of the 14th International Symposium on RF MEMS and RF Microsystems: 1-3 July 2013: Potsdam, Germany". Potsdam: 2013. 
URIhttp://hdl.handle.net/2117/22910
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  • RF&MW - Grup de Recerca de Sistemes, Dispositius i Materials de RF i Microones - Ponències/Comunicacions de congressos [151]
  • Departament de Teoria del Senyal i Comunicacions - Ponències/Comunicacions de congressos [3.190]
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