Title :
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
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;
Conference_Titel :
Microwave Integrated Circuits Conference (EuMIC), 2013 European
Conference_Location :
Nuremberg
