TY - JOUR
T1 - Design of Circular Waveguide Annular Slot-Coupled Two-Layer DRA for Linear and Circular Polarizations
AU - Ghosh, Bratin
AU - Bhattacharya, Dhrubajyoti
AU - Sinha, Priyanka Deb
AU - Werner, Douglas H.
N1 - Publisher Copyright:
© 2002-2011 IEEE.
PY - 2020/6
Y1 - 2020/6
N2 - 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.
AB - 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.
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U2 - 10.1109/LAWP.2020.2986375
DO - 10.1109/LAWP.2020.2986375
M3 - Article
AN - SCOPUS:85086143036
SN - 1536-1225
VL - 19
SP - 1012
EP - 1016
JO - IEEE Antennas and Wireless Propagation Letters
JF - IEEE Antennas and Wireless Propagation Letters
IS - 6
M1 - 9072485
ER -