Title :
A Low-Power K-Band CMOS VCO With Four-Coil Transformer Feedback
Author :
Liu, Szu-Ling ; Chen, Kuan-Han ; Chang, Tsu ; Chin, Albert
Author_Institution :
Dept. of Electron. Eng., Nat. Chiao Tung Univ., Hsinchu, Taiwan
Abstract :
A K-band low-power and low-phase-noise voltage-controlled oscillator (VCO) is presented in this letter. By utilizing four-coil transformer feedback and forward body bias topology, good performances are obtained under a low-power supply with a 5.1% tuning range and a phase noise of -109.8 dBc/Hz at 1 MHz offset from the 21.37-GHz carrier frequency. The core circuit of this VCO only consumes 3.5 mW with a 0.6-V supply voltage and a 0.55-V body bias.
Keywords :
CMOS integrated circuits; transformers; voltage-controlled oscillators; K-band low-power supply; carrier frequency; core circuit; forward body bias topology; four-coil transformer feedback; low-phase-noise voltage-controlled oscillator; low-power K-band CMOS VCO; Forward body bias; K-band; low power; transformer feedback;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
Conference_Location :
6/10/2010 12:00:00 AM
DOI :
10.1109/LMWC.2010.2049736
