Low phase noise LC VCO with reduced drain current duty cycle

被引：8

作者：

Liu, P. ^{[1
]}

Upadhyaya, P. ^{[2
]}

Jung, J. ^{[1
]}

Heo, D. ^{[1
]}

Kim, J. -H. ^{[3
]}

Kim, B. -S. ^{[3
]}

机构：

[1] Washington State Univ, Sch Elect Engn & Comp Sci, Pullman, WA 99163 USA

[2] Xilinx Inc, High Speed Transceiver Design, San Francisco, CA USA

[3] KFRI, Songnam 463764, South Korea

来源：

ELECTRONICS LETTERS | 2012年 / 48卷 / 02期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1049/el.2011.3189

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 novel LC VCO topology with switched current source is presented. Theoretical analysis is given to show the reduction of cross-paired transistors' drain current duty cycle with the implementation of current source switching, which reduces the upconversion of 1/f noise and also provides noise shaping by directly reducing 1/f noise. A 5.25-5.5 GHz LC VCO has been fabricated and measured for the proposed topology, achieving a FOM of -191 dBc/Hz, which is among the best published FOM results for 5-6 GHz VCOs in standard CMOS process.

引用

页码：77 / U123

页数：2

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