多频连续可调的可重构滤波天线  

Multi‑Frequency Continuously Adjustable Reconfigurable Filter Antenna

作　　者：史洋一 高小强 陆畅 段俊萍[1] SHI Yangyi;GAO Xiaoqiang;LU Chang;DUAN Junping(Key Laboratory of Instrumentation Science&Dynamic Measurement,Ministry of Education,North University of China,Taiyuan 030051,China;Hangzhou Huifeng Engineering Management Co.,Hangzhou 311300,China)

机构地区：[1]中北大学仪器科学与动态测试教育部重点实验室,山西太原030051 [2]杭州汇丰工程管理有限公司,浙江杭州311300

出　　处：《测试技术学报》2024年第3期337-344,共8页Journal of Test and Measurement Technology

基　　金：国家自然科学基金创新群体资助项目(51821003);山西省重点研发资助项目(国际合作)(201803D421043)。

摘　　要：设计了一种多频连续可调的可重构滤波天线。首先将2个加载变容二极管的1/4波长阶跃阻抗谐振器(Step Impedance Resonator,SIR)带通滤波器与50Ω微带传输线集成,得到一个可重构滤波馈电网络,通过控制6个PIN二极管的通断状态,实现超宽带与窄带模式的切换,同时分析了馈电网络对应的等效电路。另外,设计了一款工作频率覆盖可调滤波器通带范围的分形超宽带天线,并将二者集成实现滤波天线。对该天线设计进行了仿真优化和实物测试,结果表明,该天线能够在WiMAX窄带连续可调、WLAN窄带连续可调和超宽带3种模式下工作,且均具有良好的辐射特性,可广泛应用于多频段无线通信中。A multi-frequency continuously adjustable reconfigurable filter antenna is designed.Firstly,two 1/4 wavelength SIR Bandpass filters loaded with varator diodes are integrated with 50Ωmicrostrip transmission lines to obtain a reconfigurable filter feed network.By controlling the on-off state of six PIN diodes,the UWB and narrowband modes can be switched.In addition,a fractal ultra-wideband antenna whose operating frequency covers the passband range of the tunable filter is designed,and the two are integrated to realize the filter antenna.The design of the antenna is simulated and tested.The test results show that the antenna can work in WiMAX narrowband continuous tunable mode,WLAN narrowband continuous tunable mode and ultra-wideband mode,and all have good radiation characteristics,which can be widely used in multi-band wireless communication.

关 键 词：滤波天线 频率可重构 带通滤波器 超宽带分形天线 阶跃阻抗谐振器 

分 类 号：TN82[电子电信—信息与通信工程]