Title :
Back-gate coupled quadrature LC VCO with multi-band tuning & low power consumption
Author :
Park, Jihyun ; Lee, Jaesoek ; Lee, Sangho ; Choi, Sanghyun ; Kim, Hyeongdong
Author_Institution :
Dept. of Electron. & Comput. Eng., Hanyang Univ., Seoul
Abstract :
In this paper, quadrature VCO adopts back-gate coupling instead of coupling transistor topology to get low phase noise and low power consumption. The 2-bit switch capacitor arrays and two MOS varactors are used to widen the frequency range in the band tuning circuit. As a result, the proposed LC quadrature VCO shows excellent performances of power consumption and phase noise for the frequency band of three standards: CDMA2000 lx, WCDMA, and WiBro.
Keywords :
MIS devices; low-power electronics; varactors; voltage-controlled oscillators; 2-bit switch capacitor arrays; MOS varactors; back-gate coupled quadrature LC VCO; band tuning circuit; low power consumption; multiband tuning; phase noise; power consumption; Circuit optimization; Circuit topology; Coupling circuits; Energy consumption; Frequency; Phase noise; Switches; Switching circuits; Tuning; Voltage-controlled oscillators;
Conference_Titel :
Microwave Conference, 2008. APMC 2008. Asia-Pacific
Conference_Location :
Macau
Print_ISBN :
978-1-4244-2641-6
Electronic_ISBN :
978-1-4244-2642-3
DOI :
10.1109/APMC.2008.4958311
