Title :
A current-reuse quadrature VCO for wireless body area networks
Author :
Kim, Jeong Ki ; Jeong, Jihoon ; Ha, Dong Sam ; Lee, Hyung-Soo
Author_Institution :
Dept. of Electr. & Comput. Eng., Virginia Polytech. Inst. & State Univ., Blacksburg, VA, USA
Abstract :
This paper presents implementation of a low-power quadrature voltage controlled oscillator (QVCO) for medical implant communication service (MICS) applications. The proposed QVCO adopts a parallel-coupling scheme to combine two current-reuse VCOs (P-QVCO). The proposed QVCO has been implemented in 180 nm RF CMOS technology. Simulation results show that the P-QVCO consumes 2.6 mA from 1.2 V supply and achieves very low phase noise of -140 dBc/Hz@1MHz when the carrier frequency is 400 MHz.
Keywords :
CMOS integrated circuits; biomedical communication; biomedical electronics; body area networks; low-power electronics; phase noise; prosthetics; voltage-controlled oscillators; P-QVCO; QVCO; RF CMOS technology; carrier frequency; current 2.6 mA; frequency 400 MHz; medical implant communication service; parallel-coupling scheme; phase noise; quadrature voltage controlled oscillator; voltage 1.2 V; wireless body area networks; Couplings; Damping; Microwave integrated circuits; Phase noise; Resistors; Transistors; Voltage-controlled oscillators; Current-reuse VCO; MICS; P-QVCO; QVCO;
Conference_Titel :
Life Science Systems and Applications Workshop (LiSSA), 2011 IEEE/NIH
Conference_Location :
Bethesda, MD
Print_ISBN :
978-1-4577-0421-5
DOI :
10.1109/LISSA.2011.5754154
