基于阶梯阻抗谐振器的滤波介质谐振器天线  

Filtering dielectric resonator antenna besed on stepped impedance resonator

作　　者：王传云[1] 王丽娜 韩志文 张永华 WANG Chuanyun;WANG Li’na;HAN Zhiwen;ZHANG Yonghua(School of Information Engineering,East China Jiaotong University,Nanchang 330013,China)

机构地区：[1]华东交通大学信息工程学院,江西南昌330013

出　　处：《传感器与微系统》2023年第9期93-96,共4页Transducer and Microsystem Technologies

基　　金：江西省自然科学基金面上资助项目(20202BABL202008)。

摘　　要：为设计一种适用于无线通信系统射频(RF)前端且具有良好带外抑制特性的滤波介质谐振器天线(DRA),提出了一种基于阶梯阻抗谐振器(SIR)的滤波DRA。通过将谐振器单元折叠并进行电耦合级联,实现带宽可调的紧凑型滤波器设计;采用零度馈电方式,提高滤波器带外抑制水平。最终,将其嵌入DRA微带馈线,完成具有准椭圆函数响应的滤波DRA设计。仿真与测试表明:天线中心频率为3.4 GHz,阻抗带宽为13.02%(3.15~3.59 GHz),增益为4.46 dBi,辐射零点分别位于2.91 GHz和4 GHz处。To design a filtering dielectric resonator antenna(DRA)suitable for radio frequency(RF)front-end of wireless communication systems and has good out of band suppression characteristics,a filtering DRA based on stepped impedance resonator(SIR)is proposed.By folding resonator elements and cascading through electrical coupling,realize the design of compact filter with adjustable bandwidth.And then,the zero-degree feed mode is embedded into the DRA microstrip feedline to improve the out-of-band suppression level of filter and realize design of a quasi-elliptic function response of filtering DRA.Simulation and measurement results show an impedance bandwidth of 13.02%(3.15~3.59 GHz)and a center frequency of antenna of 3.4 GHz,the realized gain is 4.46 dBi,two radiation zero are located at 2.91 and 4 GHz,respectively.

关 键 词：阶梯阻抗谐振器 零度馈电 带通滤波器 介质谐振器天线 滤波天线 

分 类 号：TN82[电子电信—信息与通信工程]