Series-Resonance BiCMOS VCO with Phase Noise of -138dBc/Hz at 1MHz Offset from 10GHz and -190dBc/Hz FoM

📋 论文概要

该论文提出了一种基于串联谐振的BiCMOS压控振荡器(VCO)，通过优化电感与电容的串联谐振网络，在10GHz载波频率下实现了-138dBc/Hz@1MHz偏移的相位噪声和-190dBc/Hz的优值(FoM)，解决了5G及未来无线通信中对极低相位噪声的需求。

💡 主要创新点

• 采用串联谐振拓扑结构，在保持高Q值的同时降低了电感值，从而在低供电电压下实现更低的相位噪声。
• 通过BiCMOS工艺中的异质结双极晶体管(HBT)与CMOS器件的协同设计，优化了有源器件的噪声性能和谐振网络的品质因数。

🏷 关键词

📄 原文摘要

The phase noise of oscillators limits the modulation Error Vector Magnitude (EVM) in wireless communications and the SNR in high-speed data converters. The issue is particularly critical in the wireless infrastructure for 5G and beyond, where base stations and backhaul transceivers need extremely low phase noise to support wide bandwidth and spectrally efficient modulation schemes at high carrier frequency. Given the supply voltage, the phase noise in LC oscillators is reduced by scaling down the inductance and increasing power consumption. However, the Q degradation with too-small inductors sets a lower bound on phase noise [1,2]. To overcome this limit, oscillators evolved from a single-core to multicore topologies, where N oscillators are coupled to scale down phase noise by 10log(N). This concept was exploited with two cores [1] and then extended to four [2-4] and eight cores [5], giving ideally the phase-noise reduction of 3,

👥 作者与机构

Alessandro Franceschin, Domenico Riccardi, Andrea Mazzanti

University of Pavia, Pavia, Italy