A new simulation method for nonlinear characteristics of SAW devices

Author

Nakagawa, R. ; Suzuki, Takumi ; Shimizu, Hiroshi ; Kyoya, Haruki ; Katsuhiro, Nako

Author_Institution

Murata Manuf. Co., Ltd., Nagaokakyo, Japan

fYear

2013

fDate

6-8 Oct. 2013

Firstpage

292

Lastpage

295

Abstract

In recent years, the linearity performance of the RF front end part of mobile phone handsets is a one of very hot topics. In such a situation, the requirement of high linearity to SAW duplexers has become strong. In this paper, a novel simulation method for nonlinear signals has been proposed. The nonlinear stress and current are represented by introducing nonlinear terms into the piezoelectric fundamental equations. They are connected as voltage and current sources in the electrical equivalent circuit of a SAW device, and the nonlinear signals observed at arbitrary external terminals are estimated. Very good agreement between the simulation and the measured values has been obtained for the third-order harmonic and IMD of SAW resonators.

Keywords

equivalent circuits; multiplexing equipment; piezoelectricity; surface acoustic wave resonators; RF front end; SAW device; SAW duplexer; SAW resonator; arbitrary external terminal; electrical equivalent circuit; mobile phone handset; nonlinear characteristic; nonlinear signal; nonlinear stress; piezoelectric fundamental equation; simulation method; surface acoustic wave resonator; Harmonic analysis; Integrated circuit modeling; Mathematical model; Stress; Surface acoustic wave devices; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Microwave Integrated Circuits Conference (EuMIC), 2013 European

Conference_Location

Nuremberg

Type

conf

Filename

6687843