Design of Circular Waveguide Annular Slot-Coupled Two-Layer DRA for Linear and Circular Polarizations
Design of Circular Waveguide Annular Slot-Coupled Two-Layer DRA for Linear and Circular Polarizations
复制标题
线偏振和圆偏振圆波导环形槽耦合两层 DRA 的设计
DOI：
10.1109/lawp.2020.2986375
复制
发表时间：
2020
影响因子：
4.2
通讯作者：
D. Werner
中科院分区：
文献类型：
--
作者：
B. Ghosh;D. Bhattacharya;Priyanka Sinha;D. Werner
The design of a circular-waveguide coupled two-layer dielectric resonator antenna (DRA) configuration is presented. It is observed that besides a reduction in the number of layers compared to a rectangular waveguide coupled multilayer-DRA structure to achieve coupling and enhanced bandwidth, the current configuration significantly enhances the functionality of the design in the realization of dual band and right-hand/left-hand circularly polarized (RHCP/LHCP) configurations without the use of additional coupling or matching elements, which, to the best of our knowledge, has not been reported earlier. Radiation characteristics with low cross-pol are achieved for the linearly polarized dual-band antenna structure. For the circularly polarized configurations, a good axial-ratio performance and a high isolation between the RHCP and LHCP fields are achieved. The computed results are obtained through a full-wave Green's function analysis of the structure, with the thickness of the ground plane modeled as an annular cavity.
