A Wideband Tightly Coupled Array for Omnidirectional Pattern Synthesis

This work presents the design of a wideband circular tightly coupled array for omnidirectional pattern generation. The proposed works over an 8:1 bandwidth, providing very high performance in terms active reflection coefficient, realized gain, and patterns with reduced ripples. is composed 32 low-profile, self-complementary, bow-tie elements displaced around metallic mast. capacitive coupling between neighbouring implementation properly designed frequency selective surface allow increasing electrical length each antenna while compensating inductive effect mast, according to connected arrays theory. A cover layer then inserted improve average gain on azimuthal plane. Time-domain simulation results confirm validity approach implementation.