Title :
A low power wide tuning range VCO with coupled LC tanks
Author :
Shouxian Mou ; Kaixue Ma ; Kiat Seng Yeo ; Mahalingam, Nagarajan ; Thangarasu, Bharatha Kumar
Author_Institution :
Circuits & Syst. Div., Nanyang Technol. Univ., Singapore, Singapore
Abstract :
A 12GHz VCO fabricated in a 0.18μm SiGe BiCMOS technology with only CMOS devices, is presented. To improve tuning range and phase noise, a technique using strongly magnetic coupled LC tanks with fixed and tunable capacitive elements is proposed. The VCO achieves wide tuning range of 4.3GHz (36%) with only 4.5mW power consumption. The proposed VCO including buffer stage occupies a chip area of 0.17mm2, and can be easily integrated on-chip with other blocks.
Keywords :
BiCMOS digital integrated circuits; Ge-Si alloys; low-power electronics; phase noise; voltage-controlled oscillators; BiCMOS technology; SiGe; capacitive elements; frequency 12 GHz; frequency 4.3 GHz; integrated on chip; low power wide tuning range VCO; magnetic coupled LC tanks; phase noise; power 4.5 mW; size 0.18 mum; CMOS integrated circuits; Frequency measurement; Phase noise; Tuning; Varactors; Voltage-controlled oscillators;
Conference_Titel :
SOC Conference (SOCC), 2011 IEEE International
Conference_Location :
Taipei
Print_ISBN :
978-1-4577-1616-4
Electronic_ISBN :
2164-1676
DOI :
10.1109/SOCC.2011.6085075
