摘要
带通滤波器是交会参数毫米波探测器的重要组成单元,其性能直接影响探测信号的检测能力。根据毫米波探测器设计要求,提出了一种基于加载枝节T型谐振器的带通滤波器设计方案,在计算谐振器谐振频率和滤波器的结构尺寸基础上,根据双模阶梯阻抗谐振器模型,通过枝节加载,结合HFSS软件建模仿真优化得到中心频率在36 GHz,带宽为1 GHz的微带带通滤波器。仿真结果表明,该毫米波窄带滤波器带内插损小于3 dB,带内回波损耗大于20 dB,阻带衰减≥20@35.5 GHz且≥20@36.5 GHz,基本满足毫米波探测器使用要求。
The band pass filter is an important component of the rendezvous parameter millimeter wave detector,and its performance directly affects the detection ability of the detection signal.Its performance directly affects the detection ability of the detection signal.According to the design requirements of millimeter wave detectors,a design scheme of bandpass filter based on loaded stub T-type resonator is proposed.On the basis of calculating the resonant frequency of the resonator and the structural size of the filter,according to the dual-mode stepped impedance resonator model,a microstrip bandpass filter with a center frequency of 36 GHz and a bandwidth of 1 GHz is obtained through branch loading,combined with HFSS software modeling and simulation optimization.The simulation results show that the band interpolation loss of the millimeter wave narrowband filter is less than 3 dB,the in-band return loss is greater than 20 dB,and the stopband attenuation is greater than or equal to 20@35.5 GHz and greater than or equal to 20@36.5 GHz,basically meet the requirements for the use of millimeter wave detectors.
作者
姬娜娜
姚金杰
Ji Na′na;Yao Jinjie(Shanxi Key Laboratory of Signal Capturing&Process,North University of China,Taiyuan 030051,China)
出处
《电子测量技术》
北大核心
2021年第8期12-16,共5页
Electronic Measurement Technology
关键词
毫米波
T型谐振器
带通滤波器
奇偶模
millimeter wave
T-type resonator
bandpass filter
odd and even mode
作者简介
姬娜娜,在读硕士生,主要研究方向为微波毫米波电路设计。E-mail:xianaa@126.com;姚金杰,博士,副教授,主要研究方向为毫米波测试技术、北斗导航技术应用。E-mail:1910382988@qq.com。
