Performance Evaluation of a Novel Hmsiw Antenna for Mmwave Rf Energy Harvesting Systems with Artificial Magnetic Conductor

Abstract

A novel millimeter wave compact triple band multi-slotted Defective Ground Structure (DGS) Half-mode Substrate integrated waveguide (HMSIW) patch antenna has been presented in this article. For gain enhancement, a grounded Artificial magnetic conductor (AMC) is added with slitted square slots at the edges and cross shaped slots in the middle. The antenna has a low profile of 0.45[[EQUATION]] at the center frequency of the operating band at 19 and 31.5 GHz and a wide bandwidth of about 10% (19-20 GHz) and 54% (24-43 GHz), almost capturing the entire 5G mmW frequencies, and a maximum gain of about 7.4 dBi and 8.5 dBi respectively. And also, the vias in HMSIW, act as a periodic defect collectively contribute to the enhancement of the performance of the antenna in terms of isolation, directivity, and high bandwidth. The major motive for the addition of the AMC with HMSIW antenna is its compact size, larger coverage, high gain, and efficiency ideal for energy harvesting systems rather than the usage of phased array antennas requiring phase shifters, beamforming network, and feed networks making the proposed setup, a low-profile structure.

Keywords: Substrate Integrated Waveguide, dual-band, DGS, HMSIW, AMC