一种低剖面宽带介质谐振天线  

A Low-Profile Wideband Dielectric Resonator Antenna

作　　者：陈鑫鹏 刘能武 贾智慧 傅光[1] Chen Xinpeng;Liu Nengwu;Jia Zhihui;Fu Guang(National Key Laboratory of Antennas and Microwave Technology,Xidian University,Xi’an 710071)

机构地区：[1]天线与微波技术重点实验室,西安电子科技大学,西安710071

出　　处：《测控与通信》2021年第3期23-26,40,共5页

摘　　要：本文提出了1种基于多模谐振的低剖面宽带介质谐振天线。该天线由矩形介质谐振器、地板、金属销钉组成。通过矩形介质谐振器内部销钉,有效控制TM_(228)模(0<8<1)的电场分布和谐振频率,从而在不增加天线外形电尺寸的条件下,使TM_(228)模与中心探针模谐振频点相靠近,展宽了天线的阻抗带宽。仿真结果表明该天线实现了低剖面(0.109λ_(0))、宽频带(14.9%)且频带内方向图稳定等特性。In this paper,a low-profile wideband Dielectric Resonator Antenna(DRA)is proposed based on multiresonant modes.The antenna consists of the rectangular dielectric resonator,ground plane,and an array of metal shorting pins.By properly loading the pins inside the rectangular DRA,the frequency and the electric field distributions of the TM_(228)mode are effectively controlled.Then,the dual modes are moved in proximity to each other,and the impedance bandwidth of the antenna is significantly improved without increasing the electrical size of the antenna shape.The simulated results show that a wide impedance bandwidth of about 14.9%is realized for the antenna,while maintaining the low profile(0.109λ_(0))and stable radiation patterns.

关 键 词：双模 低剖面 宽带 介质谐振天线 接地销钉 

分 类 号：TN8[电子电信—信息与通信工程]