具有四陷波特性的小型化超宽带滤波器  

A miniaturized UWB filter with four-notch characteristics

作　　者：南敬昌[1] 刘曼 刘超[1] NAN Jing-chang;LIU Man;LIU Chao(School of Electrics and Information Engineering,Liaoning Technical University,Huludao 125105,China)

机构地区：[1]辽宁工程技术大学电子与信息工程学院,辽宁葫芦岛125105

出　　处：《磁性材料及器件》2023年第3期45-50,共6页Journal of Magnetic Materials and Devices

基　　金：国家自然科学基金项目(61971210);辽宁省特聘教授项目(551710007004)。

摘　　要：为了解决传统具有陷波特性的超宽带滤波器陷波深度不足和陷波较少的问题,提出了一种小型化四陷波超宽带滤波器。通过采用非对称耦合技术、在两端馈线处嵌入开路枝节以及在超宽带滤波器上加载新型双开环谐振器、C型谐振器的方式,实现通带内的四陷波特性。该超宽带(Ultra-Wideband,UWB)滤波器通带为2.77~11.1GHz,相对带宽为120%,在3.54 GHz、5.62 GHz、6.84 GHz和8.24 GHz处产生四个陷波,能够避免全球微波互联接入(WiMAX)、无线局域网(WLAN)、印度国家卫星通信C频段和X卫星通信上行频段对超宽带系统的干扰,适用于超宽带无线通信系统。最后,对设计制作的实物进行测试,测试结果与仿真结果基本一致。In order to solve the problem of insufficient notch depth and less notch in traditional ultra-wideband filters with notch characteristics,this paper proposes a miniaturized four-notch ultra-wideband filter.By adopting asymmetric coupling technology,embedding open stubs at both ends of the feeder,and loading new double open-loop resonator and Ctype resonator on the ultra-wideband filter,the four-notch characteristics in the passband are realized.The UWB filter features a passband of 2.77 to 11.1 dB and a relative bandwidth of 120%.Four notches are generated at 3.54 GHz,5.62 GHz,6.84 GHz and 8.24 GHz,which can avoid WiMAX and wireless local area networks(WLAN),Indian national satellite communication C-band and X satellite communication uplink frequency band interfere with ultra-wideband systems,which are suitable for ultra-wideband wireless communication systems.Finally,the filter was prepared and tested,and the test results are basically consistent with the simulation results.

关 键 词：超宽带滤波器 四陷波 谐振器 小型化 

分 类 号：TN713[电子电信—电路与系统]