Wideband low profile tightly coupled dipole antenna array with an integrated balun

Abstract

This paper presents a low profile wideband antenna array of tightly coupled dipole antennas. A slot coupled wideband balun is also integrated into the array. The proposed array is designed to operate in 2 GHz – 3.7 GHz frequency band. A finite array with 7 × 7 elements is simulated to observe the radiation and input impedance performance of the antenna. In the proposed array 64.3% impedance bandwidth is achieved along with the good radiation characteristic throughout the band of interest. The height of the proposed structure is only 0.08 λ at the lowest operating frequency.