Design of Wideband and Wide-Angle Scanning Phased Array Based on Wideband EBG Structure

Abstract

A linear dipole array based on wideband electromagnetic bandgap (EBG) is designed in this paper. The linear array is organized along the H plane and the simulated results of an infinite array show that it features a bandwidth of 24.1% (from 5.1 to 6.5GHz) while scanning to 70° in the H plane with $\text{VSWR < 2.5}$. Then, a ${1\times 20}$ finite linear dipole array based on the above element configuration is designed. The array has the ability to scan up to 75° with a gain reduction less than 3 dB at 5GHz, and scan up to 80° with a gain reduction less than 3 dB at 5.7GHz, and scan up to 88° with a gain reduction about 4 dB at 6.1GHz.