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本文提出了一种工作在47.3-58.4GHz的差分准Class-E Colpitts振荡器，旨在解决毫米波通信中本地振荡信号频谱纯度不足的问题。该设计通过差分准Class-E拓扑实现高能效和高FoMT，无需额外的谐波提取放大级，从而降低功耗和面积。
*Equally Credited Authors (ECAs) The increasing demand for complex modulation schemes to achieve high data-rates in millimeter-wave (mm-wave) communication systems necessitates local-oscillation (LO) signals with exceptionally high spectral purity. As mm-wave voltage-controlled oscillators (VCOs) suffer from limited performance, many existing solutions for mm-wave LO generation rely on harmonic extraction from a low-frequency VCO [1]. However, additional power-hungry and area-consuming amplification stages are usually required owing to the weak harmonic components. Alternatively, recent research has extensively explored multicore fundamental VCO topologies [2]. By coupling N identical oscillators, phase noise theoretically improves by 10log10(N) compared to individual cores. Meanwhile, the Q-factor degradation caused by the so-called “small-inductor” problem in mm-wave oscillator designs can be alleviated. Despite the superior phase noise offered by both harmonicextraction and multi-co
Changwenquan Song*, Zehui Kang*, Chen Yu, Liang Wu
Chinese University of Hong Kong, Shenzhen, China