Étude d’une matrice agile rayonnante à pixels élaborés en métamatériaux maitrise de concepts, réalisation de prototypes et caractérisation

This PhD thesis is dedicated to the study and the development of a novel agile antenna system called ‘Agile Radiating Matrix with Metamaterials Pixels’. This system is formed by a planar matrix which is composed by an association of jointed electromagnetic pixels. The pixel design is inspired from the electromagnetic band gap antenna and it is surrounded by metallic walls. These pixels are fed by means of several beam forming networks.The intensive theoretical study made on the matrix antenna, showed several electromagnetic performances concerning the low mutual coupling, the great beam steering for high scanning angles and the elimination of grating lobes. Three manufactured prototypes are presented in order to experimentally validate the matrix performances and to respond to some application requirements.Ce mémoire est consacré à l’étude et au développement d’un nouveau système antennaire agile en rayonnement appelé MARPEM (Matrice Agile Rayonnante à Pixels Elaborés en Métamatériaux). Ce système est formé d’une matrice planaire formée par un agencement jointif de pixels électromagnétiques. Le concept du pixel est inspiré de l’antenne à Bande Interdite Electromagnétique et entouré par une enceinte murale. Ces pixels sont alimentés par des circuits de formation de faisceaux.Des études théoriques approfondies ont montré des performances électromagnétiques de MARPEM concernant le faible couplage mutuel, les forts pointages électroniques et l’élimination de lobes de réseau. Trois prototypes ont été étudiés et réalisés afin de valider expérimentalement les performances de MARPEM et de répondre aux exigences de différentes applications

New Circularly Polarized Matrix Antenna For Space Applications

International audiencethis paper presents a new electromagnetic approach of matrix antenna, specialized for circularly polarized space applications. The design of the proposed antenna matrix is based on small pixels which generate circular polarization field. The concept of the pixels is well demonstrated as a patent and verified for the use in antenna arrays. The design will be used for several space applications with directive and wide angle beams. Index Terms—antenna array, axial ratio, beam forming, Isoflux, Electromagnetic band gap material EBG, Frequency selective surface FSS

An agile electronically scanned EBG matrix antenna for monitoring target activity

International audienceTelecommunications, civil and military radars, RFID (Radio Frequency IDentification) and all the radiating systems are evolving towards the spatial agility that associates « range » and « coverage ». In this context, this article describes and demonstrates an experimental prototype to show the reliability and efficiency of the EBG matrix antenna theoretical aspect, for beam forming and beam steering applications

A New Agile Radiating System Called Electromagnetic Band Gap Matrix Antenna

Civil and military applications are increasingly in need for agile antenna devices which respond to wireless telecommunications, radars, and electronic warfare requirements. The objective of this paper is to design a new agile antenna system called electromagnetic band gap (EBG) matrix. The working principle of this antenna is based on the radiating aperture theory and constitutes the subject of an accepted CNRS patent. In order to highlight the interest and the originality of this antenna, we present a comparison between it and a classical patch array only for the (one-dimensional) 1D configuration by using a rigorous full wave simulation (CST Microwave software). In addition, EBG matrix antenna can be controlled by specific synthesis algorithms. These algorithms use inside their; optimization loop an analysis procedure to evaluate the radiation pattern. The analysis procedure is described and validated at the end of this paper

Agile radiating matrix with elaborated metamaterial pixels. Concepts, manufacturing prototypes and caracterization

Ce mémoire est consacré à l’étude et au développement d’un nouveau système antennaire agile en rayonnement appelé MARPEM (Matrice Agile Rayonnante à Pixels Elaborés en Métamatériaux). Ce système est formé d’une matrice planaire formée par un agencement jointif de pixels électromagnétiques. Le concept du pixel est inspiré de l’antenne à Bande Interdite Electromagnétique et entouré par une enceinte murale. Ces pixels sont alimentés par des circuits de formation de faisceaux.Des études théoriques approfondies ont montré des performances électromagnétiques de MARPEM concernant le faible couplage mutuel, les forts pointages électroniques et l’élimination de lobes de réseau. Trois prototypes ont été étudiés et réalisés afin de valider expérimentalement les performances de MARPEM et de répondre aux exigences de différentes applications.This PhD thesis is dedicated to the study and the development of a novel agile antenna system called ‘Agile Radiating Matrix with Metamaterials Pixels’. This system is formed by a planar matrix which is composed by an association of jointed electromagnetic pixels. The pixel design is inspired from the electromagnetic band gap antenna and it is surrounded by metallic walls. These pixels are fed by means of several beam forming networks.The intensive theoretical study made on the matrix antenna, showed several electromagnetic performances concerning the low mutual coupling, the great beam steering for high scanning angles and the elimination of grating lobes. Three manufactured prototypes are presented in order to experimentally validate the matrix performances and to respond to some application requirements

Matrice 2D Agil/Reconfigurable d'antennes BIE ULP (Ultra Low Profile) pour des applications Grand Gain

National audienc

1D Ultra Low-Profile (ULP) EBG; Matrix for Radar Applications

International audienc

Prototype d'une Antenne BIE Ultra Low-profile ? Large Bande et Grand Gain pour des Applications de forte Puissance

International audienc

L'intérêt de la Matrice BIE 1D par rapport au Réseau des Patchs en termes de Couplage Mutuel et de Lobes Réseaux

National audienc

Interests of a 1D EBG Matrix Compared to a Patch Array in terms of Mutual coupling and Grating Lobe

International audienc