A low-phase noise LC-QVCO in CMOS technology

被引：28

作者：

Choi, HC ^{[1
]}

Shin, SB ^{[1
]}

Lee, SG ^{[1
]}

机构：

[1] Informat & Commun Univ, Taejon 305714, South Korea

来源：

IEEE MICROWAVE AND WIRELESS COMPONENTS LETTERS | 2004年 / 14卷 / 11期

关键词：

1/f noise up-conversion; complementary metal oxide semiconductor (CMOS); phase noise; quadrature voltagecontrolled oscillator (QVCO); RF; source-injection parallel coupled; quadrature VCO (SIPC-QVCO);

D O I：

10.1109/LMWC.2004.834553

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：

This letter presents a source-injection parallel coupled (SIPC) quadrature voltage-controlled oscillator (QVCO) topology. In the proposed SIPC-QVCO, compare to the conventional parallel-coupled LC-QVCO (P-QVCO), the coupling transistors are configured in a way so that the 1/f noise, contributed by the coupling transistors at the output, can be avoided. The newly proposed SIPC-QVCO and conventional P-QVCO are fabricated based on 0.25 mum CMOS technology. The phase noise of SIPC-QVCO measured at 1.5 GHz shows more than 10 dB improvement than that of the conventional P-QVCO over the offset frequency range of 10 K similar to 1 MHz while dissipating the same amount of power.

引用

页码：540 / 542

页数：3

共 7 条

[1] Analysis and design of a 1.8-GHz CMOS LC quadrature VCO [J].