Title :
Miniaturized multi-band filter banks for Extravehicular radio (EVA) Applications
Author :
Stephanou, Philip J. ; Black, Justin P. ; Benjamin, Andrew L.
Author_Institution :
Harmonic Devices Inc., Berkeley, CA
fDate :
June 17 2008-April 17 2008
Abstract :
NASA seeks to employ micro-electromechanical system (MEMS) S-band filters to reduce the size, weight, and power of its reconfigurable, fault-tolerant, next-generation extravehicular activity (EVA) radio. Of particular interest to NASA are banks of channel-select filters from 2.4 - 2.483 GHz. We describe a novel double-layer contour-mode piezoelectric aluminum nitride (AlN) resonator topology that is amenable for use in GHz filter banks. Measured results of a 1.7 GHz resonator are presented, showing a motional resistance of 60 Omega and an electromechanical coupling coefficient of 0.9%. Excellent agreement with a lumped parameter model of the device is observed. Ongoing simulation and design efforts of 2.4 GHz filters employing the novel AlN resonator topology are also reviewed.
Keywords :
UHF filters; band-pass filters; channel bank filters; micromechanical devices; mobile radio; resonator filters; AlN; MEMS; NASA; S-band filters; channel-select filters; double-layer contour-mode piezoelectric AlN resonator topology; electromechanical coupling coefficient; extravehicular radio applications; frequency 1.7 GHz; frequency 2.4 GHz to 2.483 GHz; lumped parameter model; micro-electromechanical system; miniaturized multiband filter banks; Aluminum nitride; Channel bank filters; Electrical resistance measurement; Fault tolerant systems; Filter bank; Microelectromechanical systems; Micromechanical devices; NASA; Resonator filters; Topology; AlN; RF MEMS; bandpass filter; contour mode; piezoelectric; resonator;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2008. RFIC 2008. IEEE
Conference_Location :
Atlanta, GA
Print_ISBN :
978-1-4244-1808-4
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2008.4561411
