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Optimal Cell Topology Constraint for Monolayer Dual-Polarized Beamscanning Reflectarrays

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1 Author(s)
Perruisseau-Carrier, J. ; Adaptive Micro Nano Wave Syst. Group, Ecole Polytech. Fed. de Lausanne (EPFL), Lausanne, Switzerland

This letter relates to the development of satellite reflectarrays able to scan a single dual-polarized beam, based on monolayer resonating cells embedding digital microelectromechanical systems (MEMS). We study general topology constraints to be imposed on the elementary cell to ensure dual-polarized operation, minimal cross-polarization, and a reduced number of MEMS for a given phase resolution. It is shown that an element electrically invariant to a 90° rotation is the most favorable one, and the theoretical considerations are verified by a design example under both normal and oblique incidence.

Published in:

Antennas and Wireless Propagation Letters, IEEE  (Volume:11 )

Date of Publication:

2012

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