Optimized design of H-slot antenna for bandwidth improvement

Abstract

A wide band optimized H-slot microstrip antenna is described in this paper. The radiating patch is mounted upon a dielectric substrate and the antenna is excited by a microstrip line feed. The antenna dimensions and the radiation parameters such as return loss, VSWR, gain and directivity are studied using Ansoft HFSS. Particle Swarm Optimization (PSO) which is an effective evolutionary optimization technique is used for optimizing the proposed antenna. This method provided better results in the design of the antenna and it also analyzed the effect of the various design parameters like substrate length and height, length of the patch and feed. The improvement in the results has been included in the design. Therefore, with the modified parameters, the antenna exhibits 50% increase in bandwidth which is shown in the results section.

Karakterisasi Antena Mikrostrip dengan H-slot untuk Aplikasi Synthetic Aperture Radar Pita X

“…Akan tetapi, dimensi antena sangat besar dengan ukuran patch lebih besar dua kali lipat dari antena mikrostrip pada umumnya. Antena mikrostrip konvensional dengan slot berbentuk "H" telah dilakukan pada penelitian [9] dan menghasilkan bandwidth fraksional sebesar 12,5%.…”

Optimization of H-Shape Micro strip Patch antenna Using PSO and Curve Fitting

“…It is based on random probability distribution algorithm [4] when a group of bees in garden, they always try to discover a huge number of flower [5]. This method is used when a large number of particle from a group moving around in search space seeking for a optimized solution [3] . In this technique every particle is supposed as a point in an N-dimensional space, which adjust its flying according to its flying experience as well as its flying experience of other particle [6].…”

“…Many technique proposed by researchers like increased the thickness of the substrate by gap-coupling, using stacked patch structure and different type of feeding technique. So that improvement of bandwidth and reduction in size is major issue in the design of microstrip antenna [1][2][3] In this paper , H shaped patch is used in the design of microstrip antenna. Particle swarm optimization (PSO) has been used for optimization of antenna, ansoft HFSS software is used for simulation of antenna and graphmatica is used for curve fitting.…”