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

fYear

2011

fDate

20-22 April 2011

Firstpage

1

Lastpage

3

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;

fLanguage

English

Publisher

ieee

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

Type

conf

Filename

5774024