Title :
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
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;
Conference_Titel :
Circuits and Systems (APCCAS), 2012 IEEE Asia Pacific Conference on
Conference_Location :
Kaohsiung
Print_ISBN :
978-1-4577-1728-4
DOI :
10.1109/APCCAS.2012.6419038
