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Dual-polarization cylindrical long-slot array antenna integrated with hybrid ground plane

In this paper, a dual-polarization ultra-wideband long-slot antenna arrays (LSA) integrated with hybrid electromagnetic band-gap (EBG)/ferrite ground planes is designed for communication radar applications. The dual-polarization was achieved by combining connected dipole and long slot array concept. Connected dipole mode provides horizontal polarization while long slot mode gives vertical polarization. The developed antenna is a cylindrical shape of the LSA with cylindrical EBG/Ferrite hybrid ground plane, which is designed to cover NTDR, and EPLRS bands. This antenna provides the omni directional pattern from 150 to 500 MHz. The hybrid EBG/Ferrite ground plane, previously developed and experimentally verified by the authors for planar arrays, both eliminating the slot radiation toward the center of the cylinder and was important in enhancing the wideband properties of the array. Antenna characteristics of the developed antennas were analyzed by simulations and the simulation results are presented.