A Novel Kind of Wideband Low-Profile Dielectric Resonator Antenna Suitable for Beam-scanning Applications  

作　　者：Wenjian Sun Yang Yu Yingdong Hu Wenwen Yang Jianxin Chen 

机构地区：[1]School of Information Science and Technology,Nantong University,Seyuan Road,Nantong 226019,China [2]Nantong Research Institute for Advanced Communication Technologies,Chongchuan District,Nantong 226019,China

出　　处：《China Communications》2022年第4期98-107,共10页中国通信（英文版）

基　　金：supported by the National Natural Science Foundation of China under Grant 62071256;National Natural Science Foundation of Jiangsu under Grant BK20201438;supported by State Key Laboratory of Millimeter Waves (Nanjing) and Nantong Research Institute for Advanced Communication Technologies (Nantong);sponsored by Qing Lan Project of Jiangsu Province。

摘　　要：In this paper, a low-profile wideband dielectric resonator antenna(DRA) with a very compact planar size is investigated. The antenna consists of a high permittivity dielectric sheet on the top, a low permittivity substrate in the middle, and a probe feeding structure at the bottom. By digging an annular slot in the designated area of the square dielectric sheet, the resonant frequency of fundamental TE111 mode can be effectively increased to be close to the high-order TE131 mode. The two modes can be finally merged together, yielding a wide impedance bandwidth of16.6%. Most importantly, the combination of the two modes is done on the premise of a fixed antenna planar size, which can be very compact and suitable for beam-scanning applications. A probe feeding structure is used to excite the DRA, making the antenna simple and practical to be integrated with other RF circuits. For verification, antenna prototypes with singlefeed linear polarization and differential-feed dual polarization were fabricated and measured. Reasonable agreement between the measured and simulated results is observed.

关 键 词：dielectric resonator antenna COMPACT WIDEBAND beam-scanning DUAL-POLARIZATION 

分 类 号：TN820[电子电信—信息与通信工程]