An ultra-wideband CMOS VCO with 3-5 GHz tuning range

Chien-Cheng Wei, H. Chiu, Wu-Shiung Feng
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引用次数: 38

Abstract

An ultra-wideband CMOS voltage-controlled oscillator (VCO) with 3-5 GHz tuning range is presented in this paper. The circuit was designed and fabricated by using TSMC 0.18-/spl mu/m CMOS process. The proposed VCO is using the tunable active inductor to replace the passive spiral inductor. The active inductor can vary the inductance between 1.5/spl sim/7 nH with quality-factor > 30 by a feedback tunable resistor. Comparisons of this topology with conventional VCO show that this topology achieves better performance with very wide tuning range and compact chip size. The tuning range is approximately from 3 to 5 GHz for ultra-wideband system applications.
具有3-5 GHz调谐范围的超宽带CMOS压控振荡器
提出了一种调谐范围为3 ~ 5ghz的超宽带CMOS压控振荡器(VCO)。采用台积电0.18-/spl mu/m CMOS工艺设计制作了该电路。所提出的压控振荡器采用可调谐有源电感代替无源螺旋电感。有源电感可以通过反馈可调谐电阻在1.5/spl sim/7 nH之间变化电感,质量因子> 30。该拓扑与传统VCO的比较表明,该拓扑具有非常宽的调谐范围和紧凑的芯片尺寸,具有更好的性能。对于超宽带系统应用,调谐范围约为3至5 GHz。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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