Title :
Low-noise self-referenced CMOS oscillator
Author :
Sasidhar, N. ; Inti, Rajesh ; Hanumolu, Pavan Kumar
Author_Institution :
Sch. of Electr. Eng. & Comput. Sci., Oregon State Univ., Corvallis, OR, USA
Abstract :
A new low-noise CMOS oscillator architecture is presented. The oscillator comprises of a loop formed by a switched capacitor integrator which sets the control voltage to a voltage controlled oscillator (VCO). The VCO output provides a clock for the integrator, thus closing the feedback loop. Phase noise reduction is obtained by suppressing the VCO noise by the feedback loop. Design considerations and simulation results supporting the architecture are presented.
Keywords :
CMOS integrated circuits; feedback oscillators; integrated circuit noise; phase locked loops; voltage-controlled oscillators; feedback loop; low-noise self-referenced CMOS oscillator; phase noise reduction; switched capacitor integrator; voltage controlled oscillator;
Journal_Title :
Electronics Letters
DOI :
10.1049/el.2009.1342
