Dina Serhal

Metallic EBG sectoral antenna for base stations

This work aims to study and design antennas for base stations containing metallic electromagnetic band gap (EBG) materials. The objective was to make and study new concepts of EBG metallic antennas able to work according to a wide (or broad) form pattern radiation, i.e. presenting at least 60deg angular aperture. The use of metallic structures offers a new approach to the industrial partners to reduce the costs and to facilitate the design techniques. The high impedance presented by the metallic structure allows us to use only one layer of rods and to make the antenna less cumbersome than it was before with a dielectric structure.

Multifed Sectoral EBG Antenna for WiMAX Applications

Sectoral antennas are used for applications that do not need symmetric patterns in vertical and horizontal planes. This letter deals specifically with sectoral electromagnetic band-gap (EBG) antennas and focuses on the ability to obtain higher gain and better performances. First, we start with a brief description of the working principle of such antennas. Then, we propose an original model of sectoral EBG antenna based on Babinet theorem. The multisource feeding technique is used in the antenna design in order to achieve higher performances. Finally, a prototype of this model is realized, and an extensive set of measurement and simulation results are reported and discussed.

New Development Around M-PRS Antennas for Sectoral Coverage of Telecommunication Networks With Dual Polarization

In this letter, we present a novel approach to study and design a dual-polarized sectoral antenna using a double layer of metallic partially reflecting surface (M-PRS) working on orthogonal polarizations as a superstrate. The use of metallic structures offers a new approach to industrial partners in order to reduce costs and to facilitate design techniques. This antenna is able to radiate in vertical, horizontal, and dual polarization with a wide (or broad) radiation pattern form, i.e., presenting at least 60deg angular beamwidth in the azimuth plane. M-PRS antennas with sectoral pattern are usually designed only for vertical and horizontal polarization. A dual-polarized sectoral M-PRS antenna for lower Hiperlan2 application [5.155.35] GHz is presented.

EBG antenna conformation for beamforming

Conformal antennas design is a new approach of interest to those in radar and communication systems and antenna engineers, creating antennas having any desired pattern radiation which is determined by considerations like the type of the zone to be covered, urban or rural. This paper provides a fundamental understanding of the characteristics of EBG (electromagnetic band-gap) conformal antennas; we have considered planar metallic EBG structures and studied the role of electrical walls and their influence on electromagnetic radiation. An example of the conformal antennas, the sectoral ones, are presented. Then we showed a simulated metallic sectoral EBG antenna for WiMAX application. Finally, we presented a method for antenna beamforming using diodes, starting with a square one.

Dual-band metallic FSS-EBG sectoral antenna

In this paper we present a novel approach to create a dual frequency band of a new sectoral antenna design combining metallic EBG materials as a superstrate with a frequency selective surfaces (FSS) as a substrate. The geometry and working of the antenna are detailed and a design method is proposed.

Sectoral metallic EBG antenna for high data rate wireless terrestrial communications with vehicles using mobile WiMAX technology

This paper introduces a new model of high gain sectoral metallic Electromagnetic Band Gap antenna used to communicate with mobile vehicles such as cars, trains, etc. This antenna, which is dedicated to base stations, aims at providing high data rate for passengers so that they can connect to Internet during their travel using mobile WiMAX technology. The proposed antenna is realized. Measurements validate simulation results.