Title :
An ultra-low-power CMOS complementary VCO using three-coil transformer feedback
Author :
Hsieh, Chi-Kai ; Kao, Kun-Yao ; Lin, Kun-You
Author_Institution :
Dept. of Electr. Eng., Nat. Taiwan Univ., Taipei, Taiwan
Abstract :
An ultra-low-power VCO based on the complementary cross-coupled structure with the three-coil transformer feedback is proposed and realized in 0.18 mum CMOS. This VCO has a 1 MHz offset phase noise of -118.5 dBc/Hz and consumes only 0.66 mW dc consumption. The FOM of this VCO is better than -195 dBc/Hz form 8.09 to 8.42 GHz, and the highest FOM of -198.6 dBc/Hz occurs at 8.2 GHz. The chip size is 530times430 mum2.
Keywords :
CMOS integrated circuits; MMIC oscillators; circuit feedback; field effect MMIC; low-power electronics; phase noise; transformers; voltage-controlled oscillators; complementary cross-coupled structure; dc consumption; frequency 8.09 GHz to 8.42 GHz; offset phase noise; power 0.66 mW; size 0.18 mum; three-coil transformer feedback; ultra-low-power CMOS complementary VCO; CMOS technology; Circuit topology; Feedback loop; Frequency; Low voltage; MOS devices; Metal-insulator structures; Phase noise; Transconductance; Voltage-controlled oscillators; CMOS; VCO; transformer feedback;
Conference_Titel :
Radio Frequency Integrated Circuits Symposium, 2009. RFIC 2009. IEEE
Conference_Location :
Boston, MA
Print_ISBN :
978-1-4244-3377-3
Electronic_ISBN :
1529-2517
DOI :
10.1109/RFIC.2009.5135497
