摘要
利用现代计算机数控机床(Computer Numerical Control,CNC)铣削技术实现了中心频率为140 GHz的矩形波导带通滤波器。基于电磁仿真软件HFSS对该滤波器进行了优化设计和容差分析。采用CNC铣削技术完成了该滤波器的加工制备。测试结果与仿真结果吻合良好,表明该滤波器具备优越的性能:其中心频率为140.2 GHz、3 dB相对带宽为10.1%,插入损耗小于0.5 dB,带内回波损耗优于25 dB,距中心频率±20 GHz处带外抑制大于30 dB。该结果进一步验证了利用CNC铣削技术加工140 GHz波段滤波器的可行性。
In this paper,a rectangular waveguide band-pass filter with a center frequency of 140 GHz is realized by using modern Computer Numerical Control(CNC)metal milling technology.The proposed filter is designed based on HFSS and then fabricated by CNC metal milling technology.The measured results agree well with the simulated ones indicating that the filter has excellent performances:the center frequency is 140.2 GHz,the relative bandwidth is 10.1%at 3 dB,the insertion loss is less than 0.5 dB,the in-band return loss is better than 25 dB,and the out-of-band isolation is larger than 30 dB at±20 GHz away from the center frequency.The results further confirm the feasibility of 140 GHz waveguide band filter fabricated by CNC metal milling technology.
作者
熊瑛
马俊成
李东升
唐先锋
Xiong Ying;Ma Juncheng;Li Dongsheng;Tang Xianfeng(School of Engineering and Technology,Chengdu College of University of Electronic Science and Technology of China,Chengdu 611731,China;School of Physical Science and Technology,Southwest Jiaotong University,Chengdu 611756,China)
出处
《电子技术应用》
2023年第7期16-19,共4页
Application of Electronic Technique
基金
四川省重大科技专项(2022YFG0226)。
