Title :
A New Model for Contribution of Triode Noise to Phase Noise of CMOS LC Oscillators
Author :
Rashtian, H. ; Dehghani, R.
Author_Institution :
Dept. of Electr. & Comput. Eng., Isfahan Univ. of Technol., Isfahan
Abstract :
In this paper the effect of source parasitic capacitances on phase noise in CMOS LC oscillators is studied. A new model for the noise of differential pair transistors in triode region is presented. Based on the given model, the dependency of the phase noise on differential pair transistors sizing is introduced and the function of the used LC noise filter in the tail is analytically investigated. The conclusions are validated through circuit simulations in an existing 0.18 mum CMOS technology.
Keywords :
CMOS integrated circuits; integrated circuit noise; oscillators; phase noise; CMOS LC oscillators; LC noise filter; differential pair transistors; phase noise; triode noise; CMOS technology; Circuit noise; MOSFETs; Oscillators; Parasitic capacitance; Phase noise; Semiconductor device modeling; Switches; Tail; Voltage;
Conference_Titel :
Silicon Monolithic Integrated Circuits in RF Systems, 2009. SiRF '09. IEEE Topical Meeting on
Conference_Location :
San Diego, CA
Print_ISBN :
978-1-4244-3940-9
Electronic_ISBN :
978-1-4244-2831-1
DOI :
10.1109/SMIC.2009.4770505
