EBG identification by the Reflection Phase Method (RPM) design for application WiFi antenna
ABSTRACT In a first part of this article, we present the method based on the reflection phase diagram for the identification of the EBG (electromagnetic band gap) structures. The procedure consists to plot the diagram of phase of the wave reflected by EBG structure excited by an incident wave, in the simplest case, plane and normal upon the structure. The forbidden band corresponds to the frequency band where the phase of the reflected wave is equal to 0plusmn45deg, criterion of Sievenpiper, or to 90plusmn45deg, criterion of Rahmat-Samii. In the filtered frequency band, the structure behaves as a magnetic conductor : a High-impedance surface. The EBG structure studied and designed is a Mushroom-like (D. Sievenpiper et al., 1999). The performances of this structure are modelled using the HFSS code. In the second part, we illustrate the application aimed by the design of this structure.
Conference Paper: Gain improvement of MSA array for base station using covered EBG[Show abstract] [Hide abstract]
ABSTRACT: This paper presents a sector antenna for mobile base station using microstrip antenna (MSA) array covered with Electromagnetic Band Gap (EBG). The advantages of this proposed antenna are light weight, easy fabrication and installation, and moderately high gain compare to the other antennas in the cellular phone system at present. Moreover, it provides a fan-shaped radiation pattern and wider in the horizontal direction. The paper also presents the procedures of a 1×4 array antenna using MSAs covered with the EBG structures design. A Computer Simulation Technology (CST) software has been used to compute the reflection coefficient (S11), radiation pattern, and gain of the antenna system. The bandwidth, at S11 (-10 dB), is between 1920 to 2170 MHz with a gain 17.6 dB of the antenna system.Antennas and Propagation (APCAP), 2012 IEEE Asia-Pacific Conference on; 01/2012
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ABSTRACT: 1. Abstract The aim of this study is to miniaturize a printed antenna by using Electromagnetic Band Gap (EBG) structures. In a first part, we describe the geometry and the electromagnetic characteristics of the printed antenna. We illustrate in the second part the solution suggested for this miniaturization. The procedure consists to design an EBG structure which works inside the band-width of the antenna, and employs this structure as reflector ground plane of the antenna. In the band gap of the structure, this plane behaves like an Artificial Magnetic Conductor. In the third part, we give the results of simulations and measurements obtained.01/2007;
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ABSTRACT: This study is the extension of a work which we have already started on the miniaturization of a printed antenna by using electromagnetic band gap structure (EBG) of mushroom-like type . In addition to the miniaturization, our objective in this study aims to extend the bandwidth and enhanced the gain of this antenna by design of a second EBG structure with the same mushroom-like type. Thus, we demonstrate that the EBG structures are the good candidates for the design of antennas characterised by low profile, wide band and high gain.Antennas and Propagation Society International Symposium, 2008. AP-S 2008. IEEE; 08/2008