A unified method for nonlinear noise analysis of all-pole RF MEMS tunable filters

Author

Sekar, Vikram ; Entesari, Kamran

Author_Institution

Texas A&M Univ., College Station, TX, USA

fYear

2011

fDate

5-10 June 2011

Firstpage

1

Lastpage

4

Abstract

A simple, unified approach is presented to theoretically calculate the effect of nonlinear noise in all-pole RF MEMS tunable filters. The proposed admittance-based calculation in the bandpass domain allows easy estimation of filter phase noise while considering the effect of nonlinearity, finite resonator quality factor, and frequency-dependence of inverter networks in Butterworth and Chebyshev tunable filters. Filter phase noise is calculated as a function of input power, tuning state, mechanical frequency offset, and filter order, and comparison of the results with previously published work shows excellent agreement.

Keywords

Butterworth filters; Chebyshev filters; Q-factor; band-pass filters; invertors; micromechanical devices; phase noise; radiofrequency filters; resonator filters; Butterworth filters; Chebyshev filters; admittance-based calculation; all-pole RF MEMS tunable filters; bandpass domain; filter order; filter phase noise; finite resonator quality factor; inverter networks; mechanical frequency offset; nonlinear noise analysis; tuning state; Admittance; Inverters; Micromechanical devices; Microswitches; Phase noise; Radio frequency; Brownian motion; RF microelectromechanical systems (RF MEMS); phase noise;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Symposium Digest (MTT), 2011 IEEE MTT-S International

Conference_Location

Baltimore, MD

ISSN

0149-645X

Print_ISBN

978-1-61284-754-2

Electronic_ISBN

0149-645X

Type

conf

DOI

10.1109/MWSYM.2011.5972731

Filename

5972731