A 53.6-to-60.2GHz Many-Core Fundamental Oscillator with Scalable Mesh Topology Achieving -136.0dBc/Hz Phase Noise at 10MHz Offset and 190.3dBc/Hz Peak FoM in 65nm CMOS

📋 论文概要

本文提出一种基于可扩展网格拓扑的多核基频振荡器，工作频率范围为53.6-60.2GHz，实现了-136.0dBc/Hz@10MHz偏移的优异相位噪声性能，解决了毫米波高速通信中本地振荡器相位噪声要求严苛的问题，避免了使用次谐波振荡器和倍频器带来的面积和功耗开销。

💡 主要创新点

• 提出可扩展的网格拓扑结构，实现多核基频振荡器的协同工作，有效降低相位噪声。
• 采用多核振荡器架构，利用相位耦合改善噪声性能，同时保持宽调谐范围。

🏷 关键词

📄 原文摘要

The millimeter-wave (mm-wave) high-speed wireless communication has placed stringent requirements on the phase-noise performance of the local oscillators (LO), especially when a high-order modulation such as 1024-QAM is used. To meet the phase noise requirement, one can use a subharmonic oscillator followed by frequency multipliers to improve the phase noise performance [1]. However, the frequency multipliers and the necessary extra amplification stages consume a large chip area and power. On the other hand, mm-wave fundamental VCOs suffer from the Q drop as inductance becomes too small due to the inner-edge deconstructive coupling in singleturn inductors [2]. To overcome this problem, multicore technologies are used in mm-wave fundamental oscillators [2-6]. By coupling N cores together, the phase noise can be improved by 10log(N). At the same time, the inductance in each core can be large

👥 作者与机构

Haikun Jia, Ruichang Ma, Wei Deng, Zhihua Wang, Baoyong Chi

Tsinghua University, Beijing, China