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该论文提出了一种采用电磁混合耦合谐振增强技术的多核振荡器，实现了18.6至40.1GHz的超宽带调谐范围和201.7dBc/Hz的优值（FoMT），解决了毫米波频段多核振荡器相位噪声与调谐范围之间的折衷问题。
The development of millimeter-wave (mmW) multiple-band systems for the 5G wireless and point-to-point backhaul communication requires ultra-wideband signal sources with low phase noise. However, with increasing parasitics and the limited quality factor of passive components at mmW bands, it is significantly challenging for an oscillator in a signal source to meet such performance. Recently, oscillator designs have evolved from the conventional single-core to multi-core types [1,2]. With the parallel cross-coupled pairs and LC tanks, a multicore oscillator can efficiently reduce the phase noise level, while increasing the chip size and limiting frequency tuning range. To extend the operation bandwidth, mode-switching multi-core oscillators [3-7] are developed and enable phase-noise reduction and tuning-range extension simultaneously. Nevertheless, most of the reported mode-switching oscillators are dual-mode and are still not easily able to
Yiyang Shu, Huizhen Jenny Qian, Xun Luo
University of Electronic Science and Technology of China, Chengdu, China