Phase Noise Analysis of MEMS-Based Phase Shifters

Rebeiz, Gabriel M. (2001) Phase Noise Analysis of MEMS-Based Phase Shifters. In: Gallium Arsenide applications symposium. GAAS 2001, 24-28 september 2001, London.
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Abstract

The effect of Brownian noise on Micro-Electro-Mechanical (MEMS)-based circuits has been calculated for MEMS-based circuits (phase shifters, delay circuits). The calculations are done for capaci-tive shunt MEMS switches and metal-to-metal contact series MEMS switches. The phase noise due to Brownian motion is negligible for MEMS switches with k ' 10 N/m, g0 > 2 µm, Q > 0.5, and f0 ' 50 kHz. It is also found that metal-to-metal contact series switches result in much less phase noise than standard capacitive shunt switches. The phase noise increases rapidly for low spring-constant bridges (k =0.2-4 N/m), low-height bridges, and for bridges with a large mechanical damping (Q < 0.3). Also, varactor-based de-signs result in 30-40 dB more phase noise than switch-based circuits. The paper proves that microwave passive circuits built using MEMS switches (with a proper mechanical design) can be used in most commercial and military applications without any phase noise penalty.

Abstract
Tipologia del documento
Documento relativo ad un convegno o altro evento (Atto)
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AutoreAffiliazioneORCID
Rebeiz, Gabriel M.
Settori scientifico-disciplinari
DOI
Data di deposito
17 Giu 2004
Ultima modifica
17 Feb 2016 13:46
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