Nonlinear artificial line models for power BAW resonators

Author

Constantinescu, F. ; Gheorghe, A.G. ; Nitescu, M. ; Florea, A.

Author_Institution

Dept. of Electr. Eng., Politeh. Univ., Bucharest, Romania

fYear

2011

fDate

13-15 Sept. 2011

Firstpage

1

Lastpage

6

Abstract

The linear artificial transmission line model developed in 1986 by Morris and Hutchens is extended for nonlinear piezoelectric materials. Two new physical circuit models are proposed, one of them taking into account a mechanical nonlinearity while the other considers an electrical nonlinearity. Both nonlinearities are described by third degree polynomials. The measurements of the amplitude-frequency effect and of the frequency characteristic of the second harmonic reflected power have been compared with simulation results. The good agreement for AlN resonators with mechanical nonlinearity suggests that it can be the origin of their nonlinear behavior.

Keywords

acoustic resonators; aluminium compounds; bulk acoustic wave devices; piezoelectric materials; AlN; amplitude-frequency effect; circuit models; electrical nonlinearity; frequency characteristic; linear artificial transmission line model; mechanical nonlinearity; nonlinear artificial line models; nonlinear piezoelectric materials; power BAW resonators; second harmonic reflected power; Equivalent circuits; Harmonic analysis; Integrated circuit modeling; Materials; Mathematical model; Power transmission lines; Transmission line measurements; Artificial transmission line model; nonlinear effects; power BAW resonators;

fLanguage

English

Publisher

ieee

Conference_Titel

AFRICON, 2011

Conference_Location

Livingstone

ISSN

2153-0025

Print_ISBN

978-1-61284-992-8

Type

conf

DOI

10.1109/AFRCON.2011.6072051

Filename

6072051