采用新型可调谐有源电感的频率可调谐高Q低噪声的带通滤波器  

A Tunable High Q and Low Noise Active Band-Pass Filter Based on a Novel Differential Active Inductor

作　　者：张正 张延华 温晓伟 那伟聪 ZHANG Zheng;ZHANG Yanhua;WEN Xiaowei;NA Weicong(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,北京100124

出　　处：《电子器件》2021年第1期39-45,共7页Chinese Journal of Electron Devices

基　　金：国家自然科学基金项目(61774012,61574010);北京市自然科学基金项目(4142007,4143059);北京市未来芯片技术高精尖创新中心科研基金项目(KYJJ2016008);中国博士后科学基金项目(2019M650404)。

摘　　要：对采用双回转结构交叉耦合差分有源电感(DGC-DAI)的可调谐、高品质因子Q和低噪声差分有源带通滤波器(THQLNA-BPF)进行了研究。输入级,采用差分共基-共射结构,以抑制噪声和获得高频特性;输出级,采用差分共集放大器,以获得高的驱动能力和高的隔离度;有源电感滤波网络,利用DAI电感值可宽范围调谐、高Q值和低的噪声,来分别实现BPF的中心频率的宽范围调节、高Q值和良好的噪声特性;进一步地,利用变容二极管网络改善BPF中心频率的可调性和提高Q值,利用有源可调负阻网络提高BPF的Q值和进行Q值独立调节。基于WIN 0.2μm GaAs HBT工艺,利用ADS对THQLNA-BPF进行性能验证。结果表明:中心频率可在1.68 GHz~4.32 GHz范围内调谐,调谐量达2.64 GHz;最大和最小Q分别达到83.6和33.6;噪声范围为6.04 dB~8.83 dB;在中心频率为3.69 GHz时,输入1 dB压缩点为-7.3 dBm,稳定系数μ>1;静态功耗小于18 mW。A tunable,high Q and low noise active band-pass filter(THQLNA-BPF)using a double gyration cross coupling differential active inductor(DGC-DAI)is presented. At the input stage,a differential common-base common-emitter structure is employed to suppress the noise and obtain high frequency characteristic. At the output stage,a differential common-collector amplifier is used to obtain high drive capability and high isolation. At active inductor filter network,the advantages of the wide tunable range of inductance value,high Q value and low noise of the DGC-DAI is utilized to realize the wide tuning range of the center frequency,high Q value and low noise of BPF respectively. Furthermore,a variable capacitance diode network is used also to further improve tunability of center frequency and the Q value of the BPF. And an active tunable negative resistance network is used also to further independently tune and improve Q value of the BPF. Based on WIN 0.2 μm HBT GaAs process,the performance of THQLNA-BPF is verified. The results show that the center frequency can be tuned from 1.68 GHz to 4.32 GHz,the tuning bandwidth is up to 2.64 GHz,the maximum and minimum Q value reaches 83.6 and 33.6 respectively,the noise figure is in the range of 6.04 dB~8.83 dB,the stability coefficient is greater than 1 and the input 1 dB compression point is-7.3 dBm at a frequency of 3.69 GHz,the static power consumption is less than 18 mW.

关 键 词：有源带通滤波器 可调谐有源电感 中心频率 

分 类 号：TN722.3[电子电信—电路与系统]