A 5.8 GHz Low-Phase-Noise LC-QVCO Using Splitting Switched Biasing Technique

Author

Kim, Ki-Won ; Chang, Ho-Jun ; Kim, Young-Min ; Yun, Tae-Yeoul

Author_Institution

Div. of Electr. & Comput. Eng., Hanyang Univ., Seoul, South Korea

Volume

20

Issue

6

fYear

2010

fDate

6/1/2010 12:00:00 AM

Firstpage

337

Lastpage

339

Abstract

A 5.8 GHz LC-tank quadrature voltage-controlled oscillator (QVCO) is proposed for achieving low phase noise. Phase noise contributed by the tank voltage amplitude and the 1/f noise of the tail transistors were simultaneously improved when the splitting switched biasing technique was adopted. Measured results showed a tuning range from 5.09 to 6.15 GHz, a phase noise of -119.39 dBc/Hz at an offset of 1 MHz, and a phase-noise figure-of-merit of -188.21 dB, while consuming 3.06 mA for the core QVCO from a 1.6 V supply. The proposed QVCO was designed using a 0.18 ??m CMOS process.

Keywords

1/f noise; CMOS integrated circuits; MMIC oscillators; phase noise; voltage-controlled oscillators; CMOS process; LC-tank quadrature voltage-controlled oscillator; current 3.06 mA; figure-of-merit; frequency 1 MHz; frequency 5.09 GHz to 6.15 GHz; low-phase-noise LC-QVCO; size 0.18 mum; splitting switched biasing technique; tail transistors; tank voltage amplitude; voltage 1.6 V; 1/f noise; phase noise; quadrature voltage-controlled oscillation (QVCO); splitting switched biasing; voltage-controlled oscillation (VCO);

fLanguage

English

Journal_Title

Microwave and Wireless Components Letters, IEEE

Publisher

ieee

ISSN

1531-1309

Type

jour

DOI

10.1109/LMWC.2010.2047523

Filename

5451124