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A Wide Tuning Range 69 GHz Push-Push VCO Using 0.18 \mu{\rm m} CMOS Technology

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2 Author(s)
Chiu, Hsien-Chin ; Dept. of Electron. Eng., Chang Gung Univ., Taoyuan, Taiwan ; Chih-Pin Kao

A wide tuning range V-band push-push CMOS voltage controlled oscillator (VCO) is proposed in this study. A new core complementary Colpitts structure was adopted in a 0.18 μm CMOS process to reduce dc power consumption and to improve tuning range owing to the reduction weighting of FET induced capacitance of L-C tank. The designed VCO oscillates from 64.2 to 69.4 GHz with a 5.2 GHz tuning range under a control voltage range of 1.2 V. The measured phase noise at 1 MHz offset is -76.23 dBc/Hz at 69.39 GHz. The power consumption of the VCO core is only 27.52 mW.

Published in:

Microwave and Wireless Components Letters, IEEE  (Volume:20 ,  Issue: 2 )