Title :
A kind of LC voltage-controlled oscillator based on centre-tapped inductance
Author :
Zhang, Haipeng ; Chen, Bo ; Liu, Jingbiao ; Zhang, Haifeng ; Liu, Guohua
Author_Institution :
Sch. of Electron. & Inf., Hangzhou Dianzi Univ., Hangzhou, China
Abstract :
This paper presents a circuit of voltage controlled oscillator (VCO) with a centretap inductance LC-tank based on standard 0.13μm CMOS process. In this VCO circuit a cross coupled structure is adopted, which is filtered by an LC filter. In the LC filter a symmetric centretap inductance is connected with an accumulation-mode MOS varactor in parallel, which helps decrease the phase noise. The phase noise is about -113.7dBc/Hz at 1MHz offset from carrier frequency of 5.5GHz, and the tunable frequency varies approximately from 5GHz to 6GHz.
Keywords :
CMOS integrated circuits; MMIC oscillators; field effect MMIC; inductance; phase noise; voltage-controlled oscillators; CMOS process; LC filter; LC voltage-controlled oscillator; VCO circuit; accumulation mode MOS varactor; carrier frequency; centretap inductance LC-tank; frequency 5 GHz to 6 GHz; phase noise; size 0.13 mum; tunable frequency; CMOS integrated circuits; Inductance; Phase noise; Power harmonic filters; Varactors; Voltage-controlled oscillators; CMOS; LC oscillator; VCO; electronic circuit and system;
Conference_Titel :
Mechanic Automation and Control Engineering (MACE), 2011 Second International Conference on
Conference_Location :
Hohhot
Print_ISBN :
978-1-4244-9436-1
DOI :
10.1109/MACE.2011.5988689
