Ultralow Phase Noise and Wideband CMOS VCO Using Symmetrical Body-Bias PMOS Varactors

Author

Kuan-Chung Lu ; Fu-Kang Wang ; Tzyy-Sheng Horng

Author_Institution

Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

Volume

23

Issue

2

fYear

2013

fDate

Feb. 2013

Firstpage

90

Lastpage

92

Abstract

This letter presents an ultralow phase-noise and wide turning-range CMOS voltage-controlled oscillator (VCO) for 5 GHz WLAN applications. The proposed PMOS-only VCO design with body-bias varactors achieves a tuning range of 20.4% and a phase noise of -138.4 dBc/Hz at 1 MHz offset. The total power consumption of the VCO core is 13.1 mW using a 1.8 V supply voltage. The achieved figure of merit with tuning range (FOM_T) is -207.2 for the proposed CMOS VCO.

Keywords

CMOS integrated circuits; MMIC oscillators; circuit tuning; field effect MMIC; phase noise; varactors; voltage-controlled oscillators; wireless LAN; FOMT; figure of merit with tuning range; frequency 5 GHz; power 13.1 mW; symmetrical body-bias PMOS varactors; ultralow phase noise; voltage 1.8 V; voltage-controlled oscillators; wideband CMOS VCO; wireless LAN; CMOS integrated circuits; Noise measurement; Phase noise; Tuning; Varactors; Voltage-controlled oscillators; Body bias; CMOS voltage-controlled oscillator (VCO); PMOS varactor; phase noise; tuning range;

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2013.2239635

Filename

6418059