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Design and experimental characterization of a reconfigurable transmitarray with reduced focal distance

Published online by Cambridge University Press:  17 February 2016

Luca Di Palma ,
Antonio Clemente ,
Laurent Dussopt ,
Ronan Sauleau ,
Patrick Potier  and
Philippe Pouliguen
Luca Di Palma*
Affiliation:
Grenoble-Alpes University, Leti, Minatec Campus, 38000 Grenoble, France. Phone: +33 (0)4 38 78 96 62 CEA, Leti, Minatec Campus, 38000 Grenoble, France
Antonio Clemente
Affiliation:
Grenoble-Alpes University, Leti, Minatec Campus, 38000 Grenoble, France. Phone: +33 (0)4 38 78 96 62 CEA, Leti, Minatec Campus, 38000 Grenoble, France
Laurent Dussopt
Affiliation:
Grenoble-Alpes University, Leti, Minatec Campus, 38000 Grenoble, France. Phone: +33 (0)4 38 78 96 62 CEA, Leti, Minatec Campus, 38000 Grenoble, France
Ronan Sauleau
Affiliation:
University of Rennes 1, IETR, UMR CNRS 6164, Rennes, France
Patrick Potier
Affiliation:
Direction Générale de l'Armement (DGA), France
Philippe Pouliguen
Affiliation:
Direction Générale de l'Armement (DGA), France
*
Corresponding author: L. Di Palma Email: luca.dipalma@cea.fr
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Abstract

In this contribution, we study the design and experimental characterization of a reconfigurable transmitarray in X-band with reduced focal distance. To this end, we consider an illumination with four feed horn antennas in two different configurations. The focal distance and the horn configuration in the focal plane have been optimized with an in-house simulation tool. The effects of source placement errors and excitation unbalances are also studied. The numerical results show a reduction of the focal distance by a factor 1.8 if compared with the single-source case, for a reconfigurable 400-element transmitarray designed in X-band. Moreover, generation of multiple beams is considered and demonstrated numerically for spatial power combining applications. The experimental results obtained in radiation are in good agreement with the numerical predictions. This multiple-source transmitarray exhibits similar radiation performances as the single-source one in terms of gain, bandwidth and beam tilting capabilities, but with about half its volume. This technique seems very attractive for a better integration on various platforms such as vehicles, drones, aircrafts, buildings, etc.

Keywords

Antenna designModeling and measurementsAntennas and propagation for wireless systems
Type
Research Paper
Information
International Journal of Microwave and Wireless Technologies , Volume 8 , Issue 3: Journee Nationale des Micro-ondes (JNM) 2015 , May 2016 , pp. 447 - 454
Copyright
Copyright © Cambridge University Press and the European Microwave Association 2016 

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References

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