Two-dimensional Wide-angle Scanning of End-fire Linear Array Based on Reconfigurable AMC

Abstract

In this paper, we use a reconfigurable end-fire antenna unit with four beam directions to form a uniform linear array with 18 elements. The array has a maximum of 70 degrees scan range in the azimuth under a working state. In order to eliminate the back radiation of the antenna array and achieve beam deflection in the elevation direction, we designed an artificial magnetic conductor (AMC) corresponding to the working frequency band of the antenna, and added four PIN diodes states between the patches on the AMC structure to make the reflection phase of AMC unit can be reconstructed, thereby changing the maximum beam direction of the end-fire antenna array, so that the antenna array can scan in the elevation direction.