Title :
Low-noise CMOS LC oscillator with dual-ring structure
Author :
Kim, J.J. ; Lee, Y. ; Park, S.-B.
Author_Institution :
Hynix Semicond. Inc., Seoul, South Korea
Abstract :
A dual-ring structure of LC resonators is presented to improve the phase noise performance much further, keeping the multi-phase output capability. This dual-ring oscillator is fabricated in a 0.25 μm CMOS process and achieves the measured phase noise of -137 dBc/Hz at 1 MHz offset from a 2.27 GHz carrier.
Keywords :
CMOS integrated circuits; MMIC oscillators; UHF integrated circuits; UHF oscillators; phase noise; resonators; voltage-controlled oscillators; CMOS process; LC resonators; MOSFET; VCO; dual ring structure; frequency tuning; low noise CMOS LC oscillator; multiphase output; phase noise; phase ring;
Journal_Title :
Electronics Letters
DOI :
10.1049/el:20045030
