Title :
A Wide-Tuning Dual-Band Transformer-Based Complementary VCO
Author :
Yun, Seok-Ju ; Lee, Hui Dong ; Kim, Kwi-Dong ; Lee, Sang-Gug ; Kwon, Jong-Kee
Author_Institution :
Electron. & Telecommun. Res. Inst., Daejeon, South Korea
fDate :
6/1/2010 12:00:00 AM
Abstract :
A dual-band wide-tuning range complementary LC-VCO is reported that utilizes additive and subtractive coupling of transformer inductances. Complementary circuitry in the VCO enables the frequency tuning range to be extended with boosted positive loop gains. Implemented in 65 nm CMOS, the measured results show frequency tuning range of 56% and 33% at 7.5 and 18.25 GHz center frequency, respectively, and phase noise of -98 ~ -112 dBc/Hz (FoMT of 187 ~ 202) at 1 MHz offset while dissipating 1.7 ~ 9.9 mW.
Keywords :
CMOS integrated circuits; inductance; phase noise; transformers; voltage-controlled oscillators; .LC-VCO; CMOS process; boosted positive loop gains; center frequency; complementary circuitry; frequency 1 MHz; frequency 18.25 GHz; frequency 7.5 GHz; frequency tuning range; phase noise; size 65 nm; transformer inductances subtractive coupling; wide-tuning dual-band transformer-based complementary VCO; Dual-band; transformer-based resonator; voltage-controlled oscillator (VCO); wide-band;
Journal_Title :
Microwave and Wireless Components Letters, IEEE
DOI :
10.1109/LMWC.2010.2047524
