title   
  

An analytical design methodology for microelectromechanical (MEM) filters

Gürbüz, Yaşar and Parlak, Mustafa and Bechteler, Thomas Franz and Bozkurt, Ayhan (2005) An analytical design methodology for microelectromechanical (MEM) filters. Sensors and actuators A: Physical, 119 (1). pp. 38-47. ISSN 0924-4247

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Official URL: http://dx.doi.org/10.1016/j.sna.2004.08.031

Abstract

The design of coupling spring for a microelectromechanical (MEM) filter is driven by the requirements of bandwidth. A novel design aspect of the coupling spring design is presented which follows mechanical–electrical–mechanical domains in order. A designed second order MEM bandpass filter consists hereby of two laterally/vertically driven resonance structures, which are coupled by a mechanical spring. For these structures, an equivalent electrical representation can be obtained and in this paper, both the series and parallel electrical equivalent circuits are analyzed. The transfer function and the correlation between the bandwidth and the coupling spring for these filter equivalents are derived. The analysis yields a complete design procedure for MEM bandpass filters, which is presented along with simulation results. With changing design parameters the filter response has been demonstrated to be maximally flat as in the case of Butterworth-filters, or to have a response allowing a wider bandwidth (as much as double) than in the former case. Analytical studies of both the extreme responses are presented with simulation results.

Item Type:Article
Uncontrolled Keywords:MEMS; bandpass filters; coupling spring; series/parallel RLC; electrical equivalent
Subjects:T Technology > TJ Mechanical engineering and machinery
ID Code:351
Deposited By:Ayhan Bozkurt
Deposited On:17 Oct 2005 03:00
Last Modified:25 May 2011 14:09

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