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The 15th Conference on the Wireless across the Taiwan straits (WRTS 2010 E-BOOK)

Kunming,China,9.12-9.17，2010

ISBN: 978-1-935068-21-1 Scientific Research Publishing, USA

E-Book 350pp Pub. Date: September 2010

Category: Computer Science & Communications

Price: $80

Title: Gm-Boosting Colpitts VCO Chip Design for 5.8 GHz WiMAX Applications
Source: The 15th Conference on the Wireless across the Taiwan straits (WRTS 2010 E-BOOK) (pp 115-118)
Author(s): Jhin-Fang Huang, Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10672 Taiwan R.O.C.
Yong-Jhen Jiangn, Department of Electronic Engineering, National Taiwan University of Science and Technology, Taipei 10672 Taiwan R.O.C.
Abstract: This project using TSMC 0.18um CMOS 1P6M process implements a voltage control oscillator (VCO) applying in WiMAX systems. The oscillator adopts Colpitts architecture which has better phase noise performance than NMOS cross-coupled or complementary cross-coupled oscillator, also the oscillator uses gm boosting techniques which design circuits in a small current and power consumption. Measurement results of the proposed VCO exhibit tuning range of 5.29~6.07 GHz, phase noise of -123.4 dBc/Hz at 1 MHz offset and output power of -6.67 dBm at 5.73 GHz under the supply voltage of 1 V. The power consumption of the core circuit is 4.7 mW, and the chip area including PADs is 0.61 x 0.66 mm2.
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