DocumentCode
3216367
Title
Wide tuning range inversion-mode gated varactor and its application on a 2-GHz VCO
Author
Wong, W. ; Hui, F. ; Zhiheng Chen ; Keqiang Shen ; Lau, J.
Author_Institution
Dept. of Electron. & Electr. Eng., Hong Kong Univ. of Sci. & Technol., Kowloon, Hong Kong
fYear
1999
fDate
17-19 June 1999
Firstpage
53
Lastpage
54
Abstract
This paper presents a novel inversion-mode three-terminal varactor with a capacitance ranging from 0.7 pF to 2.3 pF, achieving a /spl plusmn/53% variation in the capacitance. The new device is implemented in a 0.35-/spl mu/m standard CMOS process. The measured quality factor is 22 at 2 GHz. A 2-GHz VCO is designed with this new varactor and is able to achieve a tuning range of 320 MHz with a maximum tuning gain of 220 MHz/V.
Keywords
CMOS analogue integrated circuits; Q-factor; UHF integrated circuits; UHF oscillators; circuit tuning; varactors; voltage-controlled oscillators; 0.35 micron; 0.7 to 2.3 pF; 2 GHz; CMOS process; VCO; capacitance; inversion-mode three-terminal gated varactor; quality factor; tuning range; CMOS process; CMOS technology; Capacitance; Circuit optimization; Q factor; Ring oscillators; Tuning; Varactors; Voltage; Voltage-controlled oscillators;
fLanguage
English
Publisher
ieee
Conference_Titel
VLSI Circuits, 1999. Digest of Technical Papers. 1999 Symposium on
Conference_Location
Kyoto, Japan
Print_ISBN
4-930813-95-6
Type
conf
DOI
10.1109/VLSIC.1999.797233
Filename
797233
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