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Low-voltage miller divide-by-three circuit integrated with a 1.5-GHz QVCO

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4 Author(s)
Chen-Wei Huang ; Department of Electrical Engineering, National Cheng Kung University, Tainan 71010, Taiwan, R.O.C. ; Shih-Hsin Chang ; Pei-Kang Tsai ; Tzuen-Hsi Huang

In this work, the integration design of a low-voltage quadrature Miller divide-by-3 circuit are proposed and targeted for the UWB RF frequency synthesizer use. Some novel circuit schematics have been proposed and designed for the low-voltage operation. The chip was fabricated by a 0.18 mum RF-CMOS technology. The function of divide-by-3 has been successfully demonstrated together with the integration of a 1.5-GHz QVCO. Due to the parasitic capacitance loading, the measured output frequency finally has shifted to 448 MHz. The measured power consumption is about 34.8 mW drawn from the 1.2 V power supply.

Published in:

2008 Asia-Pacific Microwave Conference

Date of Conference:

16-20 Dec. 2008