一种77.1-88.6 GHz的40nm CMOS高频分辨率数字控制振荡器

2020 IEEE 5th International Conference on Integrated Circuits and Microsystems (ICICM) Pub Date : 2020-10-23 DOI:10.1109/ICICM50929.2020.9292181

Kui Wang, Lu Tang

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引用次数: 0

摘要

本文提出了一种利用数字控制传输线技术实现宽频率调谐范围的毫米波数字控制振荡器(DCO)。为了优化微调的频率分辨率，设计了一个变压器来衰减C-2C开关电容(SC)阶梯电路的频率微调灵敏度。仿真结果表明，该DCO的频率调谐范围为77.1 ~ 88.6GHz。它的频率分辨率在200kHz左右。在77.5GHz频率偏移1mhz时，相位噪声为- 94.4 dBc/Hz。DCO采用40nm CMOS工艺制造，核心芯片尺寸仅为0.067mm2。

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A 77.1-88.6 GHz Digitally Controlled Oscillator with High Frequency Resolution in 40nm CMOS

This paper presents a millimeter-wave digitally controlled oscillator (DCO) using the digital controlled transmission lines (TLs) technology to achieve a wide frequency tuning range. To optimize frequency resolution of the fine tuning, a transformer is designed to attenuate the frequency fine tuning sensitivity of the C-2C switched capacitor (SC) ladder circuit. The simulated results show that the proposed DCO attains frequency tuning range from 77.1 to 88.6GHz. Its frequency resolution is around 200kHz. The phase noise is −94.4 dBc/Hz at 1-MHz frequency offset at 77.5GHz. The DCO is fabricated in 40nm CMOS process, and its core chip size is only 0.067mm2.

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2020 IEEE 5th International Conference on Integrated Circuits and Microsystems (ICICM)

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