Title :
A 2.12∼2.68GHz wide tuning CMOS LC-VCO with low phase noise
Author :
Cheng, Zhiqun ; Zhang, Lvpo ; Lin, Longqian ; Feng, Yujie
Author_Institution :
Key Lab. of RF Circuit & Syst., Hangzhou Dianzi Univ., Hangzhou, China
Abstract :
A wideband LC voltage-control oscillator (VCO) is designed based on SMIC 0.18μm CMOS process, which has wide tuning range by using the switched capacitor array, while the phase noise is reduced after using the differential inductance of high quality factor and the filter method. Simulated results show that the VCO has the tuning range of 23.3% from 2.12GHz to 2.68GHz, and the phase noise of -128.1dBc/Hz at offset of 1MHz from a 2.4GHz carrier. With a 1.8V supply voltage, the power of core circuit is 6.9mW.
Keywords :
CMOS integrated circuits; low-power electronics; switched capacitor networks; voltage-controlled oscillators; SMIC CMOS process; differential inductance; filter method; frequency 1 MHz; frequency 2.12 GHz to 2.68 GHz; low phase noise; power 6.9 mW; size 0.18 mum; switched capacitor array; voltage 1.8 V; wide tuning CMOS LC-VCO; wideband LC voltage-control oscillator; Arrays; Capacitors; Phase noise; Switches; Switching circuits; Tuning; Voltage-controlled oscillators; CMOS; differential inductance; phase noise; switched capacitor array;
Conference_Titel :
Microwave Conference Proceedings (CJMW), 2011 China-Japan Joint
Conference_Location :
Hangzhou
Print_ISBN :
978-1-4577-0625-7
Electronic_ISBN :
978-7-308-08555-7
