A 37.5–45 GHz Superharmonic-Coupled QVCO With Tunable Phase Accuracy in 28 nm CMOS
A 37.5–45 GHz Superharmonic-Coupled QVCO With Tunable Phase Accuracy in 28 nm CMOS
复制标题
采用 28 nm CMOS 封装、具有可调相位精度的 37.5–45 GHz 超谐波耦合 QVCO
DOI：
10.1109/jssc.2019.2915617
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发表时间：
2019
影响因子：
5.4
通讯作者：
A. Niknejad
中科院分区：
文献类型：
--
作者：
Luya Zhang;N. Kuo;A. Niknejad
This paper presents a new superharmonic coupling structure for millimeter-wave (mmW) quadrature voltage-controlled oscillators (QVCOs) with high phase accuracy and zero voltage headroom. The proposed coupling network can adjust the quadrature error with almost no phase noise penalty. A tail impedance theory for superharmonically coupled oscillators is introduced to analyze the locking mechanism, phase noise, phase accuracy, and phase tunability of the proposed superharmonic QVCO. For verification, a 40 GHz QVCO is fabricated in a 28 nm bulk CMOS process, which exhibits a phase noise of −94.32 dBc/Hz at 1 MHz offset and 0.18° quadrature error with 8.4 mW power consumption and 18.4% frequency tuning range.
