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本文提出一种0.07mm²的20-23.8GHz八相振荡器，采用磁耦合与双注入耦合技术，解决了传统多相本振产生中相位噪声与功耗之间的折衷问题，实现了189.2dBc/Hz的优值（FoM@10）。该设计结合了环形振荡器的多相特性与LC谐振器的高品质因数，显著提升了毫米波频段的性能。
low phase noise (PN) and low phase errors are the cornerstone of high-data-rate wireless transceivers, especially with the increasingly more complex modulation schemes. Frequency division, polyphase filters, and ring oscillators are the widespread topologies for multiphase LO generation at RF. Yet, these topologies suffer from considerable trade-offs between the key performance metrics and power budget, limiting their achievable Figure-of-Merit (FoM) at the millimeter-wave (mm-wave) frequencies. Combining the multiphase characteristic of a ring oscillator with the high-quality LC resonator could be a direction to achieve low PN and low phase error in mm-wave LO generation with multiple output phases. A typical multicore oscillator merging the beneficial properties of LC and ring oscillators is depicted in Fig. 19.4.1
Ya Zhao*1, Chao Fan*1, Qiuyu Fang1, Guohe Zhang1, Jun Yin2, Pui-in Mak2, Li Geng1
Xi’an JiaoTong University, Xi’an, China University of Macau, Macao, China *Equally Credited Authors (ECAs) 1 2 Multiphase local oscillators (LOs) with