摘要
提出了一款联合采用新型压控有源电感(VCAI)和开关电容的可高度重构电感-电容型带通滤波器(LC BPF)。主要由VCAI、开关电容网络、负阻产生电路、差分输入级、差分输出级共五部分构成。其中,VCAI主要由复合结构正跨导器、增强型负跨导器以及调制电路构成,且为正跨导器和调制电路分别配置外部电压调控端,使得VCAI获得了电感值的连续可调节以及在调谐过程中品质因数(Q_(L))保持较高值的特性;将VCAI代替LC BPF中无源螺旋电感,并与开关电容网络等模块紧密合作,实现了LC BPF的高度重构,即中心频率可大范围连续调节,而且在不同中心频率下,品质因数Q_(F)可保持较大值且可大范围调节。结果表明,该LC BPF的中心频率可在2.05 GHz调谐到7.2 GHz,调谐范围高达111.3%,在3.5 GHz、5.1 GHz、7.2 GHz的不同中心频率下,QF值可从6调谐到71.4,最大1dB压缩点为−7 dBm,最低噪声系数为18.5 dB。最终,优值高达91.5 dB。
A highly reconfigurable inductor-capacitor bandpass filter(LC BPF)is built by combining a novel voltage-controlled active inductor(VCAI)with a switched capacitor.The LC BPF primarily consists of five components:the VCAI,switched capacitors,a negative resistance generation circuit,a differential input stage,and a differential output stage.The VCAI comprises a composite structure positive transconductor with one external voltage control terminal,an enhanced negative transconductor,and a regulation circuit with two external voltage control terminals.This design allows the VCAI to achieve a wide range of adjustable inductance while maintaining a high quality factor(Q_(L))during inductance tuning.By replacing passive spiral inductors with the VCAI and integrating it closely with other components,the LC BPF achieves high reconfigurability for continuously tuning the center frequency over a wide range and realizing a high and tunable quality factor(Q_(F))at various center frequencies.Verification results show that the center frequency of the LC BPF can be tuned from 2.05-7.2 GHz,offering a tuning range of up to 111.3%.At center frequencies of 3.5,5.1,and 7.2 GHz,the QF can be tuned from 6 to 71.4;the maximum 1 dB compression point is−7 dBm,the minimum noise figure is 18.5 dB,and the highest figure of merit achieved is 91.5 dB.
作者
宋金达
张万荣
谢红云
金冬月
那伟聪
邓希达
王雪
张辉
楚尚勋
SONG Jinda;ZHANG Wanrong;XIE Hongyun;JIN Dongyue;NA Weicong;DENG Xida;WANG Xue;ZHANG Hui;CHU Shangxun(College of Information Science and Technology,Beijing University of Technology,Beijing 100124,P.R.China)
出处
《微电子学》
北大核心
2025年第3期335-342,共8页
Microelectronics
基金
国家自然科学基金项目资助项目(62271014)
北京市自然科学基金项目资助项目(4232062)
北京市教委科技计划一般项目(KM202110005029)
中国博士后科学基金资助项目(2019M650404)。
关键词
带通滤波器
可重构
有源电感
品质因数
调谐范围
bandpass filter
reconfigurable
active inductor
quality factor
tuning range
