International Journal of Engineering, Volume (27), No (10), Year (2014-10) , Pages (1573-1580)

Title : ( Comparative Investigation of Half-mode SIW Cavity and Microstrip Hybrid Antenna Using Different Patch Shapes )

Authors: Hamideh Dashti Khavidaki , Mohammad Hassan Neshati ,

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Abstract

A set of hybrid microstrip patch and semi-circular cavity antennas is introduced. The semi-circular cavity is implemented using Half-mode Substrate Integrated Waveguide (HMSIW) technique. Different shapes of the patch including rectangular, semi-circular and equilateral triangular are excited using proximity effect by the semi-circular SIW cavity at its TM010 mode. The proposed antenna structures have been excited using an inset 50 W microstrip line that leads to facility of planar circuit integration. The inherent limited bandwidth of the conventional microstrip patch antenna and SIW cavity-backed slot antenna is improved about 6% to 10% depending on the type of the patch using the proposed structure. Additionally, the proposed hybrid antenna enhanced the antenna gain by about 1.5 dB in comparison with the half-mode cavity without patch. Meanwhile, the proposed hybrid antennas are made on a single-layer substrate has a low fabrication cost using printed circuit board (PCB) process. Three hybrid antennas are numerically and experimentally investigated. A comparative study between the three different structures contains gain, bandwidth, Cross Polarization Level (CPL) and Front to Back Ratio (FBR) is presented.

Keywords

, Hybrid Antenna, Microstrip Patch, Substrate IntegratedWaveguide, Cavity Backed Slot Antenna
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@article{paperid:1042642,
author = {Dashti Khavidaki, Hamideh and Neshati, Mohammad Hassan},
title = {Comparative Investigation of Half-mode SIW Cavity and Microstrip Hybrid Antenna Using Different Patch Shapes},
journal = {International Journal of Engineering},
year = {2014},
volume = {27},
number = {10},
month = {October},
issn = {1025-2495},
pages = {1573--1580},
numpages = {7},
keywords = {Hybrid Antenna، Microstrip Patch، Substrate IntegratedWaveguide، Cavity Backed Slot Antenna},
}

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%0 Journal Article
%T Comparative Investigation of Half-mode SIW Cavity and Microstrip Hybrid Antenna Using Different Patch Shapes
%A Dashti Khavidaki, Hamideh
%A Neshati, Mohammad Hassan
%J International Journal of Engineering
%@ 1025-2495
%D 2014

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