一种高调谐线性低相位噪声的正交压控振荡器  

A High‑tuning‑linearity Low‑phase‑noise Quadrature VCO

作　　者：张菁菁 石春琦[1] 陈光胜 黄磊磊 张润曦[1] ZHANG Jingjing;SHI Chunqi;CHEN Guangsheng;HUANG Leilei;ZHANG Runxi(Institute of Microelectronic Circuit and System,East China Normal University,Shanghai,200062,CHN;Shanghai Eastsoft Microelectronics Co.,Ltd.,Shanghai,200235,CHN)

机构地区：[1]华东师范大学微电子电路与系统研究所,上海200062 [2]上海东软载波微电子有限公司,上海200235

出　　处：《固体电子学研究与进展》2025年第2期54-60,共7页Research & Progress of SSE

摘　　要：设计了一种用于通信感知一体化的正交压控振荡器(Quadrature voltage-controlled oscillator, QVCO),并分析了相位噪声、调谐线性度和调谐范围之间的关系。采用了数字温度补偿的非线性校正方法对QVCO的调谐范围和线性度进行优化,并考虑外部噪声对QVCO噪声的影响。采用55 nm CMOS工艺制备的QVCO可实现22.748~28.302 GHz的调谐范围(21.76%),调谐线性度最小值为18.2%。在载波频率偏移1 MHz时,测量到的相位噪声为-114.40~-110.49 dBc/Hz,相应的优值(Figure of merit, FOM)为-194.08~-192.06 dBc/Hz,在整个调谐范围内,标准化相位噪声为-201.41~-199.53 dBc/Hz。A quadrature voltage-controlled oscillator(QVCO)designed for integrated sensing and communication was presented in this paper,and the relationships among phase noise,tuning linearity,and tuning range were analyzed.The tuning range and linearity of the QVCO were optimized using a nonlinear correction method with digital temperature compensation,while the impact of external noise on the noise of QVCO was also considered.Fabricated with a 55 nm CMOS process,the QVCO achieves a tuning range from 22.748 to 28.302 GHz(21.76%),with a minimum tuning linearity of 18.2%.At a 1 MHz offset from the carrier frequency,the measured phase noise ranges from-114.40 to-110.49 dBc/Hz,and the corresponding figure of merit(FOM)lies between-194.08 and-192.06 dBc/Hz.And the standardized phase noise spans from-201.41 to-199.53 dBc/Hz over the entire tuning range.

关 键 词：正交压控振荡器(QVCO) CMOS 毫米波 调谐线性度 

分 类 号：TN43[电子电信—微电子学与固体电子学]