Wide-Band Low-Noise Quadrature VCO Design

Author

Yan, Yong-Hong ; Xie, Yan ; Peng, Wei ; Zeng, Yun

Author_Institution

Coll. of Phys. & micro-Electron. Sci., Hunan Univ., Changsha

fYear

2008

fDate

15-17 Aug. 2008

Firstpage

1217

Lastpage

1220

Abstract

A 2.9 GHz quadrature VCO designed in a 0.18 um CMOS process achieves a very wide tuning range of 77% when the supply voltage equals 1.8 V. The phase noise is -120 dB/Hz at 1MHz offset for the oscillation frequency of 2 GHz, and -104 dB/Hz at 1MHz offset for the oscillation frequency of 4 GHz. The coupled oscillator architecture is adopted to widen tuning range and to minimum phase noise. Accurate quadrature outputs are maintained throughout the entire frequency range, as needed in all modern transceiver architectures.

Keywords

CMOS integrated circuits; UHF oscillators; circuit tuning; integrated circuit design; integrated circuit noise; microwave oscillators; phase noise; voltage-controlled oscillators; CMOS process; coupled oscillator architecture; frequency 2.9 GHz; frequency 4 GHz; minimum phase noise; phase noise; transceiver architectures; voltage 1.8 V; wideband low-noise quadrature VCO design; Circuit optimization; Coupling circuits; Frequency; Phase noise; Transceivers; Tuning; Virtual colonoscopy; Voltage; Voltage-controlled oscillators; Wideband; CMOS; Quadrature; VCO; Wide-band;

fLanguage

English

Publisher

ieee

Conference_Titel

Intelligent Information Hiding and Multimedia Signal Processing, 2008. IIHMSP '08 International Conference on

Conference_Location

Harbin

Print_ISBN

978-0-7695-3278-3

Type

conf

DOI

10.1109/IIH-MSP.2008.116

Filename

4604262