Wide-angle Scanning and Gain Enhancement of Array Antenna by Dielectric Lens

Abstract

In this paper, we propose the dielectric lens that enables the scanning range expansion and gain enhancement of array antenna. We apply the proposed lens to an 8-element array antenna with a gain of 14.7 dBi and a scanning range of ±41°. As a result, the scanning range is extended to ±62° and the realized gain is greater than 21 dBi at all scanning angles.