VCO with 8-shaped Transformer Coupled Transmission-Line

被引：0

作者：

Jang, Sheng-Lyang ^{[1
]}

Chen, Shih-Hsuan ^{[1
]}

Sung, Jiun-Yu ^{[1
]}

Lai, Wen-Cheng ^{[2
]}

Hsu, Mao-Hsiu ^{[3
]}

Juang, Miin-Horng ^{[1
]}

机构：

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

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

[3] Natl Formosa Univ, Dept Electroopt, Huwei Township 632, Yunlin, Taiwan

来源：

2024 IEEE THE 20TH ASIA PACIFIC CONFERENCE ON CIRCUITS AND SYSTEMS, APCCAS 2024 | 2024年

关键词：

CMOS; voltage-controlled oscillator (VCO); phase noise; twisted transformer; passive coupling;

D O I：

10.1109/APCCAS62602.2024.10808598

中图分类号：

学科分类号：

摘要：

This letter presents the design and measurement of a 3.4 GHz oscillator in the TSMC 0.18 mu m CMOS technology. The fully integrated oscillator consists of four sub-oscillators and uses four twisted transformers with the secondary inductors connected to form a twisted closed-loop transmission line for coupling the sub-oscillators. The fully-integrated chip occupies a die area of 1.2 x1.2 mm(2). The transformers are configured as 8-shaped structures to minimize the far-field magnetic field radiation from each transformer and the whole transformer. At the supply voltage of 1.7 V, the current consumption is 11.32 mA. The free-running oscillation frequency of the QVCO is tuneable. The measured phase noise at 1MHz frequency offset is -125.73 dBc/Hz at the oscillation frequency of 3.4 GHz and the figure of merit (FOM) of the proposed QVCO is -185.38dBc/Hz.

引用

页码：277 / 280

页数：4

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