A Low Phase-Noise Wide Tuning-Range Quadrature Oscillator Using a Transformer-Based Dual-Resonance LC Ring

被引：27

作者：

Bajestan, Masoud Moslehi ^{[1
]}

Rezaei, Vahid Dabbagh ^{[1
]}

Entesari, Kamran ^{[1
]}

机构：

[1] Texas A&M Univ, Dept Elect & Comp Engn, College Stn, TX 77843 USA

来源：

IEEE TRANSACTIONS ON MICROWAVE THEORY AND TECHNIQUES | 2015年 / 63卷 / 04期

基金：

美国国家科学基金会;

关键词：

CMOS; dual band; LC ring; low phase noise; quadrature voltage-controlled oscillator (QVCO); wide tuning range;

D O I：

10.1109/TMTT.2015.2409252

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 paper presents a dual-band quadrature voltage-controlled oscillator (QVCO) using a transformer-based high-order LC-ring resonator, which inherently provides quadrature signals without requiring noisy coupling transistors as in traditional approaches, thereby achieving low phase-noise performance. Moreover, the proposed resonator shows two possible oscillation frequencies, which are exploited to realize a wide-tuning range QVCO employing a mode-switching transistor network. Due to the use of transformers, the oscillator has a minimal area penalty compared to the conventional designs. The implemented prototype in a 65-nm CMOS process achieves a continuous tuning range of 77.8% from 2.75 to 6.25 GHz while consuming from 9.7 to 15.6 mA current from a 0.6-V supply. The measured phase-noise figure-of-merit at 1-MHz offset ranges from 184 to 188.2 dB throughout the entire tuning range. The QVCO also exhibits good quadrature accuracy with 1.5 maximum phase error and occupies a relatively small silicon area of 0.35 mm(2).

引用

页码：1142 / 1153

页数：12

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