一种采用调制晶体管和有源反馈电阻的新型差分有源电感  

A Novel Differential Active Inductor with Regulated Transistor and Active Feedback Resistor

作　　者：邱宗玉 张万荣 QIU Zongyu;ZHANG Wanrong(College of Microelectronics,Faculty of Information Technology,Beijing University of Technology,Beijing 100124,China)

机构地区：[1]北京工业大学信息学部微电子学院,北京100124

出　　处：《电子器件》2024年第3期597-602,共6页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61774012,61574010,61901010);北京市自然科学基金项目(4192014,4204092);中国博士后科学基金项目(2019M650404);北京朝阳区博士后科研经费项目(2019ZZ-9)。

摘　　要：提出了一种品质因数-频率(Q-f)特性、电感值-频率(L-f)特性增强和线性度高的新型差分有源电感。它主要由正跨导器、负跨导器、调制晶体管和有源反馈电阻共4个单元构成,其中,调制晶体管的外部配置了电压调控端并串接于差分结构的负跨导器的漏极,来实现电感值的调节和增大。有源反馈电阻的外部配置了电压调控端并串接于负跨导器的漏极和正跨导器的栅极之间,来实现Q值的调节和增大。负跨导器也配置了外部电压调控端,来实现对频带的调节;进一步地,调制晶体管和有源反馈电阻也改善了有源电感的线性度。最终,通过4个单元的相互配合和3个外部调控端电压的协同调节,可实现4种有源电感的优异综合性能:(1)在同一频率下,Q峰值相对于L值可独立调节;(2)在多频点下取得高且基本恒定的Q峰值;(3)在宽工作频带内可对L值进行大范围调节,同时Q值能够保持较高的值;(4)高的L值线性度。验证结果表明,在3.85 GHz下,Q峰值可在963~3374之间调谐,调谐率为111.2%,而电感值变化率仅为0.28%;在3.10 GHz、3.55 GHz和3.70 GHz三个频点下,分别取得了1916、1923和1821的高Q峰值,变化率仅为5.4%;在2.65 GHz~3.6 GHz频带内,L值的调谐范围均大于31%,且Q值始终大于10;电感的线性度高达-9 dBV。A novel differential active inductor(DAI)with enhanced characteristics of Q-f and L-f and high linearity is proposed.It is mainly composed of a positive transconductor,a negative transconductor,a regulated transistor and an active feedback resistor.Firstly,the regulated transistor is configured with the external voltage bias terminal and is connected to the drain of differential negative transconductor for adjusting and boosting the inductance value.Secondly,the active feedback resistor is configured with the external voltage bias terminal and is embedded between the drain of the negative transconductor and the gate of the positive transconductor for adjusting and increasing the Q value.Meanwhile,the negative transconductor is configured with the external voltage bias terminal for adjusting the frequency band.Furthermore,under the impact of the regulated transistor and the active feedback resistor,the linearity of the active inductor is improved.By the cooperation of the above four circuit units and the joint tuning of three voltages of the constructed external bias terminal,four excellent performances of the novel DAI can be achieved.Firstly,the Q peak value can be independently adjusted relative to L value.Secondly,high Q peak values can be obtained and can remain almost unchanged at different frequencies.Thirdly,the inductance values can be adjusted in a wide operation bandwidth,meanwhile high Q values can be kept.Fourthly,high linearity of the inductance value is achieved.The verification results show that at 3.85 GHz,the Q peak value can be tuned from 963 to 3374 with the tuning percentage of 111.2%,while the inductance values variation is only 0.28%.At different frequencies of 3.10 GHz,3.55 GHz and 3.70 GHz,the Q peak values can be high up to 1916,1923 and 1821 respectively with the variation of only 5.4%.In the frequency range of 2.65 GH~3.6 GHz,the tuning range of inductance values are greater than 31%,meanwhile,the Q values keep greater than 10.The linearity of the inductance value can be high up to-9 dB

关 键 词：差分有源电感 有源反馈电阻 高线性度 

分 类 号：TN722.7[电子电信—电路与系统]