Title :
Noise Simulation and Modeling for MEMS Varactor Based RF VCOs
Author :
Sankaranarayanan, Janakiram G. ; Mayaram, Kartikeya
Author_Institution :
Qualcomm Inc., San Diego, CA
Abstract :
This paper presents an analysis to model the Brownian motion induced noise in MEMS varactor based RF VCOs. A noise current model is used to describe the upconversion mechanism of Brownian noise. How this model lends itself to the computation of phase noise using a nonlinear perturbation technique was shown. A behavioral model to describe the noise characteristics of MEMS varactors is also presented.
Keywords :
Brownian motion; micromechanical devices; phase noise; varactors; voltage-controlled oscillators; Brownian motion induced noise; MEMS varactor; RF VCO; noise modeling; noise simulation; nonlinear perturbation technique; upconversion mechanism; Capacitors; Electrostatics; Iron; Micromechanical devices; Phase noise; Radio frequency; Springs; Transfer functions; Varactors; Voltage;
Conference_Titel :
Circuits and Systems, 2007. ISCAS 2007. IEEE International Symposium on
Conference_Location :
New Orleans, LA
Print_ISBN :
1-4244-0920-9
Electronic_ISBN :
1-4244-0921-7
DOI :
10.1109/ISCAS.2007.378518
