电子元件与材料2025，Vol.44Issue(1)：79-87,94,10.DOI:10.14106/j.cnki.1001-2028.2025.1310
采用新型差分有源电感的宽调谐范围低相位噪声VCO
A VCO with wide tuning range and low phase noise using novel differential active inductor
摘要
Abstract
A novel differential active inductor(DAI)based inductor-capacitor type voltage-controlled oscillator(LAIC VCO)with small area,wide tuning range and low phase noise was proposed.The DAI was mainly composed of a differential positive transconductor,two improved negative transconductors and two feedback resistors,so as to obtain tunable inductance while maintaining high Q value and low noise characteristics.Subsequently,the DAI was employed to replace the passive LC resonator in VCO in order to not only reduce the chip area,but also extend the tuning range of oscillation frequency and reduce the phase noise.In addition,a RC filter negative resistance generation circuit in LAIC VCO was utilized to filter the noise current flowing into LAIC resonator and further reduce the phase noise.Based on the 0.18 μm RF CMOS process of TSMC,the schematic simulation verification,layout design and post-layout simulation verification of the LAIC VCO were carried out by using Cadence design tool.The schematic simulation results indicate that the oscillation frequency can be tuned from 0.48 GHz to 3.24 GHz with a large tuning range of 148.39％.At the frequency offset of 1 MHz,the phase noise range is from-75.9 dBc/Hz to-95.4 dBc/Hz.Finally,the best figure of merit of-165 dBc/Hz is achieved.The post-layout simulation results confirm that better performance can be achieved with the proposed LAIC VCO circuit.关键词
压控振荡器/有源电感/高集成度/调谐范围/相位噪声/优值Key words
voltage-controlled oscillator/active inductor/high integration level/tuning range/phase noise/figure of merit分类
信息技术与安全科学引用本文复制引用
王雪,张万荣,宋金达,张辉,楚尚勋..采用新型差分有源电感的宽调谐范围低相位噪声VCO[J].电子元件与材料,2025,44(1):79-87,94,10.基金项目
国家自然科学基金(61774012,61574010,61901010) （61774012,61574010,61901010）
北京市自然科学基金(4192014,4204092) （4192014,4204092）
中国博士后科学基金(2019M650404) （2019M650404）
北京市朝阳区博士后科研经费资助项目(2019ZZ-9) （2019ZZ-9）
