CMOS VCO and LNA using tuned-input tuned-output circuits

被引：22

作者：

Shekhar, Sudip ^{[1
]}

Walling, Jeffery S. ^{[1
]}

Aniruddhan, Sankaran ^{[1
]}

Allstot, David J. ^{[1
]}

机构：

[1] Univ Washington, Dept Elect Engn, Seattle, WA 98195 USA

来源：

IEEE JOURNAL OF SOLID-STATE CIRCUITS | 2008年 / 43卷 / 05期

关键词：

current reuse; linearity; low-noise amplifier; noise figure; phase noise; tuned-input tuned-output; TITO; voltage-controlled oscillator;

D O I：

10.1109/JSSC.2008.920360

中图分类号：

TM [电工技术]; TN [电子技术、通信技术];

学科分类号：

0808 ; 0809 ;

摘要：

A tuned-input tuned-output (TITO) VCO utilizes two resonant-tanks to achieve a low measured phase noise of -130.5 dBc/Hz @ 1 MHz offset from 2.5 GHz; center frequency. Improvement in phase noise is achieved with comparable power consumption and tuning range compared to a cross-coupled VCO topology. A TITO cell similar to that in the VCO is used as a common-source amplifier in a current-reuse configuration cascaded with a g(m)-boosted common-gate amplifier to realize a high gain (>20 dB), low power (2.7 mW) LNA. A technique to improve the linearity of the current-reuse LNA is also presented.

引用

页码：1177 / 1186

页数：10