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 Wenjian Sun;Yang Yu;Yingdong Hu;Wenwen Yang;Jianxin Chen

作者机构：School of Information Science and TechnologyNantong UniversitySeyuan RoadNantong 226019China Nantong Research Institute for Advanced Communication TechnologiesChongchuan DistrictNantong 226019China 

出 版 物：《China Communications》 (中国通信（英文版）)

年 卷 期：2022年第19卷第4期

页      面：98-107页

核心收录：

学科分类：080904[工学-电磁场与微波技术] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 

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 

主　　题：dielectric resonator antenna compact wideband beam-scanning dual-polarization 

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.