R
P
Last name: RATAJCZAK
First name: Ph.
D.E.A. Automatique et Traitement du Signal, Option Communications Microondes
International audience
National audience
Analysis of EM scattering from perfectly conducting objects is achieved by a simple rigorous method to obtain both near field and far field with accuracy. The geometry of the object is modeled by breaking down the contour into a series of canonical strips where singularities due to the edges are eliminated in the solution of the integral...
International audience
National audience
International audience
International audience
Analysis of EM scattering from perfectly conducting objects is achieved by a simple rigorous method to obtain both near field and far field with accuracy. The geometry of the object is modeled by breaking down the contour into a series of canonical strips where singularities due to the edges are eliminated in the solution of the integral...
International audience
National audience
International audience
National audience
No description
No description
International audience
International audience
A new non-planar Vivaldi antenna is presented as a three-dimensional structure in the shape of a fleur-de-lis. This new balanced antenna is unique in its extremely flat S/sub 11/ response, minimizing phase distortion over a wide band from 2.2 to 21 GHz. The S/sub 11/ response of the new antenna is compared with the original planar Vivaldi...
A new non-planar Vivaldi antenna is presented as a three-dimensional structure in the shape of a fleur-de-lis. This new balanced antenna is unique in its extremely flat S/sub 11/ response, minimizing phase distortion over a wide band from 2.2 to 21 GHz. The S/sub 11/ response of the new antenna is compared with the original planar Vivaldi...
In this paper, the design of an MIMO antenna system for WIFI gateway application is proposed. 8 printed monopole dual band antennas are placed on a 135×135mm 2 FR-4 PCB. Placement of the elements is optimized to limit coupling effect. The objective of the system is to combine the MIMO technique and antenna diversity to increase data rate...
This paper describes the development of a dual frequency switchable Fresnel reflectarray (RA) antenna for communication between satellites and an unmanned aerial vehicle. The operation frequency of the antenna is switched by a PIN diode soldered on each patch of RA. First, the shape of the patch is designed on the assumption of having a...
National audience
International audience
This paper presents an Artificial Magnetic Conductor (AMC) used for the GPS standard (L1/L2). This AMC will then be used to design an antenna dedicated to be integrated in the clothes. The AMC cell is a double square patch stacked in textile substrate. The bandwidths of the presented cell are 5.1% and 4% respectively at 1.165 GHz and 1.593 GHz...
National audience