Parasitic-compensated quadrature LC oscillator

被引：13

作者：

Boon, CC ^{[1
]}

Do, MA ^{[1
]}

Yeo, KS ^{[1
]}

Ma, JG ^{[1
]}

Zhao, RY ^{[1
]}

机构：

[1] Nanyang Technol Univ, Sch Elect & Elect Engn, Div Circuits & Syst, Singapore 639798, Singapore

来源：

IEE PROCEEDINGS-CIRCUITS DEVICES AND SYSTEMS | 2004年 / 151卷 / 01期

关键词：

D O I：

10.1049/ip-cds:20040226

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：

The paper presents a method for improving the phase noise performance of a CMOS quadrature LC oscillator through parasitic compensation. Owing to the parasitic resistance in the inductor, the LC oscillator suffers from a low Q-value, which degrades its phase noise performance. In this design, through the parasitic-compensation method, the LC oscillator will be made to oscillate at the frequency when the effective impedance of the parallel LC resonator is at the peak. This will increase the Q-value of the LC resonator, which improves the phase noise performance of the circuit. A 2.63 GHz quadrature CMOS LC oscillator with a phase noise of -112.3 dBc/Hz at 600 kHz offset is demonstrated, consuming 7.5 mW of power using an on-chip spiral inductor model.

引用

页码：45 / 48

页数：4

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