Extended P-matrix model to calculate imbalance characteristics of CRF filters

Author

Grigorievsky, V.I. ; Plessky, V.P.

Author_Institution

IRE, RAS, Fryazino, Russia

Volume

3

fYear

2004

fDate

23-27 Aug. 2004

Firstpage

1910

Abstract

An extended P-matrix model is introduced that includes additional electrical ports to take into account particular electrode polarities. The transduction efficiency and static capacitance of any particular electrode are calculated using the model of reflecting grating and electrostatic charge distribution in the total electrode structure. The electrostatic charge distribution is calculated taking into account singularities at electrode ends and using series expansion in Chebyshev polynomials. Calculated results of imbalance characteristics for longitudinally coupled resonator filters agree well with measured data.

Keywords

Chebyshev filters; capacitance; series (mathematics); surface acoustic wave resonator filters; CRF filters; Chebyshev polynomials; additional electrical ports; electrode polarities; electrostatic charge distribution; extended P-matrix model; imbalance characteristics; longitudinally coupled resonator filters; reflecting grating; series expansion; static capacitance; transduction efficiency; Capacitance; Chebyshev approximation; Electrodes; Electrostatics; Gratings; Polynomials; Resonator filters; SAW filters; Scattering; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Ultrasonics Symposium, 2004 IEEE

ISSN

1051-0117

Print_ISBN

0-7803-8412-1

Type

conf

DOI

10.1109/ULTSYM.2004.1418204

Filename

1418204