A 2.4 GHz high-linearity low-phase-noise CMOS LC-VCO based on capacitance compensation

被引：0

作者：

李振荣 ^{[1
]}

庄奕琪 ^{[1
]}

李兵 ^{[1
]}

靳刚 ^{[1
]}

靳钊 ^{[1
]}

机构：

[1] Key Laboratory of the Ministry of Education for Wide Band-Gap Semiconductor Materials and Devices,School of Microelectronics,Xidian University

来源：

Journal of Semiconductors | 2010年 / 31卷 / 07期

关键词：

switched-capacitor; varactor; VCO; phase noise; tuning range; linearity;

D O I：

暂无

中图分类号：

TN752 [振荡器];

学科分类号：

080904 ;

摘要：

A 2.4 GHz high-linearity low-phase-noise cross-coupled CMOS LC voltage-controlled oscillator（VCO） is implemented in standard 0.18-μm CMOS technology.An equalization structure for tuning sensitivity base on the three-stage distributed biased switched-varactor bank and the differential switched-capacitor bank is adopted to reduce the variations of the VCO gain,achieve high linearity,and optimize the phase-noise performance.Compared to the conventional VCO,the proposed VCO has more constant gain over the entire tuning range.The tuning range is about 18.7%from 2.23 to 2.69 GHz,and the phase noise is-95 dBc/Hz at 100-kHz offset and-117 dBc/Hz at 1-MHz offset from the carrier frequency of 2.42 GHz.The power dissipation is 2.1 mW from a 1.8 V power supply.The active area of this VCO is 500×810μm;.

引用

页码：96 / 101

页数：6

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