Design of Voltage Controlled Oscillator (VCO) for Ultra Wideband (UWB) CMOS Frequency Synthesizer

被引：0

作者：

Zafar, S. ^{[1
]}

Zulkifli, T. Z. A. ^{[2
]}

Awan, M. ^{[1
]}

机构：

[1] Univ Teknol PETRONAS, Dept Elect & Elect Engn, Iskandar, Tronoh 31750, Perak, Malaysia

[2] Univ Sains Malaysia, RFIC & Mixed Signal Grp RMIC, George Town, Malaysia

来源：

ICIAS 2007: INTERNATIONAL CONFERENCE ON INTELLIGENT & ADVANCED SYSTEMS, VOLS 1-3, PROCEEDINGS | 2007年

关键词：

Ultra wideband (UWB); Frequency synthesizer; CMOS; Voltage controlled oscillator (VCO); Varactors; Phase noise; Multi band orthogonal frequency division multiplexing (MB-OFDM);

D O I：

暂无

中图分类号：

TP [自动化技术、计算机技术];

学科分类号：

0812 ;

摘要：

Voltage controlled oscillator is one of the fundamental building blocks in the frequency synthesizer architecture. A 4.224-GHz CMOS complementary cross-coupled LC-VCO is designed for multi-band OFDM (MBOFDM) ultra-wideband (UWB) application. The tuning range of the VCO is from 3.77-GHz to 4.27-GHz or 12-%, which was achieved through pMOS based varactors. The VCO core current consumption is 1.9-mA from a 1.8-V supply voltage. With the combination of source damping resistance of 40-Omega, multi-finger gate structure of pMOS based varactors the 2-mu m x 284 fingers and tail biasing resistance of 232-Omega, the phase noise were simulated at 94.7-dBc/Hz and -120.1-dBc/Hz at 100-kHz and 1-MHz offset, respectively. The VCO circuit is designed in Silterra 0.18-mu m 1-poly 6-metal RFMOS process technology.

引用

页码：1383 / +

页数：2

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