Voltage-Controlled-Oscillator Using an 8-shaped Transformer-coupled Transmission Line

被引：0

作者：

Jang, Sheng-Lyang ^{[1
]}

Hsieh, Yi-Ping ^{[1
]}

Lai, Wen-Cheng ^{[2
]}

机构：

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

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

来源：

2024 IEEE 24TH TOPICAL MEETING ON SILICON MONOLITHIC INTEGRATED CIRCUITS IN RF SYSTEMS, SIRF | 2024年

关键词：

voltage-controlled oscillator (VCO); 8-shaped; transformer-coupled transmission line; magnetic field coupling; DESIGN;

D O I：

10.1109/SiRF59913.2024.10438642

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 3:1 8-shaped transformer used to form an 8-shaped transformer-coupled transmission line consisting of four back-to-back connected transformers. The stacked transformers form a closed loop. By placing cross-coupled inverter pairs in the loop, a VCO is built. The die area of the VCO in the TSMC 0.18 mu m CMOS process is 1.2x1.2 mm(2). The measured phase noise of the eight/four-phase VCO at 5.43 GHz is -114.82 dBc/Hz and the VCO figure of merit (FOM) is -180.128 dBc/Hz. The wave on the loop is a traveling wave. The 8-shaped transformer reduces magnetic field coupling and limits the Electro-Magnetic Compatibility (EMC) issue.

引用

页码：95 / 97

页数：3

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