Design of a 843MHz 35µW SAW oscillator using device and circuit co-design technique

Author

Yao Zhu ; Yuanjin Zheng ; Chee-Leong Wong ; Minkyu Je ; Lynn, Kevin ; Kropelnicki, Piotr ; Lin, Julius Tsai Ming

Author_Institution

Nanyang Technol. Univ., Singapore, Singapore

fYear

2012

fDate

2-5 Dec. 2012

Firstpage

328

Lastpage

331

Abstract

This paper presents a 35μW SAW oscillator operating at 843MHz. The low power consumption is achieved through the co-design of SAW resonator and oscillator circuit with the aid of an accurate equivalent circuit model of SAW resonator. The equivalent circuit model of SAW resonator is improved from idealized lumped circuit model by accurate extraction and derivation of design parameters from FEM simulation in ANSYS. The simulated phase noise is -139.8dBc/Hz at 100KHz offset.

Keywords

equivalent circuits; finite element analysis; surface acoustic wave oscillators; surface acoustic wave resonators; ANSYS; FEM simulation; SAW resonator; device and circuit co-design technique; equivalent circuit model; frequency 100 kHz; frequency 843 MHz; low power consumption; lumped circuit model; oscillator circuit; power 35 muW; surface acoustic waves oscillator; Equivalent circuits; Finite element methods; Integrated circuit modeling; Oscillators; Q factor; Resonant frequency; Surface acoustic waves;

fLanguage

English

Publisher

ieee

Conference_Titel

Circuits and Systems (APCCAS), 2012 IEEE Asia Pacific Conference on

Conference_Location

Kaohsiung

Print_ISBN

978-1-4577-1728-4

Type

conf

DOI

10.1109/APCCAS.2012.6419038

Filename

6419038