Design of Compact Beam-Steering Antenna with a Novel Metasubstrate Structure

This paper presents a compact beam-steering antenna in which both beam-steering capability and mutual coupling reduction has been achieved using a novel meta-substrate structure. This novel meta-substrate consists of a 1×2 slotted patch with a split between in which PIN diodes are incorporated and 6×1 complimentary hexagonal split ring resonator (CHSRR) etched on copper plate. It has been observed that by placing this novel meta-substrate structure above the 1×2 patch array antenna at an optimized height of 3 mm produces ±20° beam scanning with around 10 dB mutual coupling reduction and about 20% miniaturization as compared to conventional antenna. All simulations are carried out using Ansoft HFSS EM Simulator and the proposed antenna can be used for ISM band application in a wireless communication system.