Low-Voltage Quadrature Voltage-Controlled-Oscillator Using Twisted Transformer

被引：1

作者：

Jang, Sheng-Lyang ^{[1
]}

Hsieh, Yi-Ping ^{[1
]}

Juang, Miin-Horng ^{[1
]}

Sung, Jiun-Yu ^{[1
]}

Lai, Wen-Cheng ^{[2
]}

机构：

[1] Natl Taiwan Univ Sci & Technol, Dept Elect Engn, Taipei 106335, Taiwan

[2] Ming Chi Univ Technol, Dept Elect Engn, Taipei 243, Taiwan

来源：

IEEE MICROWAVE AND WIRELESS TECHNOLOGY LETTERS | 2024年 / 34卷 / 06期

关键词：

8-shaped transformer; low-voltage quadrature voltage-controlled oscillator (QVCO); magnetic field noise suppression; phase noise; CMOS VCO;

D O I：

10.1109/LMWT.2024.3386332

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：

Forlow supply voltage operation, the voltage-controlled oscillator (VCO) with low voltage swing is subject to the injection pulling effect. This letter presents a low-voltage CMOS four-phase VCO using two differential LCVCOs coupled by two cross-coupled transformers. The proposed oscillator mitigates the injection-pulling effect by the8-shaped transformers with two lobes. The transformers cancel the interference noise coupling and offer a drain-to-source transformer feedback to swing the source voltage to belowground level and to increase the voltage swing. The die area of the quadrature voltage-controlled oscillator (QVCO) in the TSMC 0.18 mu m BiCMOS process is 1.2x0.963 mm2. At the supply of 0.49 V, the oscillation frequency of the QVCO is4.49 GHz and the figure of merit (FOM) is-187.032 dBc/Hz

引用

页码：667 / 670

页数：4

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