宽阻带多陷波超宽带滤波器  

Wide Stopband Multi-notch Ultra-wideband Filter

作　　者：侯明[1] 徐开心 李小珍 张杨[1] 胡雨婷 HOU Ming;XU Kaixin;LI Xiaozhen;ZHANG Yang;HU Yuting(School of Information Engineering and Automation,Kunming University of Technology,Kunming 650031,China;School of Information Engineering,Kunming University,Kunming 650214,China)

机构地区：[1]昆明理工大学信息工程与自动化学院,云南昆明650031 [2]昆明学院信息工程学院,云南昆明650214

出　　处：《探测与控制学报》2024年第5期43-49,共7页Journal of Detection & Control

基　　金：国家自然科学基金项目(61864004)。

摘　　要：为抑制其他无线窄带通信系统对超宽带系统的干扰,并提高超宽带滤波器的阻带抑制特性,提出一种拥有宽阻带和三陷波的超宽带滤波器。该滤波器采用传统多模谐振器加载阶梯开路谐振器与扇形谐振器的结构实现超宽带特性,其阻带宽度达到24.3 GHz;为引入三陷波,该滤波器采用了加载开路谐振器、耦合L型短路短截线以及非对称耦合结构;通过并联开路谐振器加载扇形谐振器的结构,优化了通带插入损耗。经过电磁仿真,该滤波器通带范围为4.1~10.6 GHz,相对带宽为93.4%,插入损耗小于1.3 dB,三处陷波分别位于5.1、6.28、8.1 GHz处,且陷波深度均大于25 dB,保证了超宽带系统的通信质量。In order to suppress the interference of other wireless narrowband communication systems on ultra-wideband systems and improve the stopband suppression characteristics of ultra-wideband filters,an ultra-wideband filter with wide stopband and three notches was proposed.The filter adopted the structure of traditional multi-mode resonator loaded step open circuit resonator and sector resonator to achieve ultra-wideband characteristics,and its resistance band width reached 24.3 GHz;in order to introduce three notches,the filter adopts loaded open circuit resonator,coupled L-type short-circuit stub and asymmetric coupling structure;In addition,the structure of the sector resonator was loaded by parallel open-circuit resonators,and the passband insertion loss was optimized.After electromagnetic simulation,the filter passband range was 4.1~11.28 GHz,the relative bandwidth was 93.4%,the insertion loss was less than 1.3 dB,and the three notches were located at 5.1,6.28,8.1 GHz,and the notch depth was greater than 25 dB,which ensured the communication quality of ultra-wideband system.

关 键 词：超宽带滤波器 多模谐振器 三陷波 宽阻带 

分 类 号：TN713[电子电信—电路与系统]