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A low phase noise 26-GHz push-push VCO with a wide tuning range in 0.18-μm CMOS technology

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4 Author(s)
Ching-Hung Chiu ; Department of Electrical Engineering, National Central University Chungli, 32001 Taiwan, China ; Kung-Hao Liang ; Hong-Yeh Chang ; Yi-Jen Chan

A 26-GHz low-phase-noise and wide- tuning-range fully integrated push-push VCO has been presented in this paper. This circuit is fabricated using 0.18-mum bulk CMOS technology. Only pMOS devices-based cross-coupled pair is used to reduce the phase noise, and the measured fundamental and push-push (second harmonic) phase noise at 1-MHz offset are about -108.1 dBc/Hz and -102.9 dBc/Hz, respectively. Moreover, the VCO achieves a wide tuning range of 14%. Maximum push-push output power is about -14 dBm, and the dc power consumption is 18.6 mW at 1.2-V power supply voltage.

Published in:

2006 Asia-Pacific Microwave Conference

Date of Conference:

12-15 Dec. 2006