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Beam focusing using 60 GHz Fabry-Perot resonators with uniform and non-uniform metal grids

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4 Author(s)
Sauleau, R. ; Inst. d''Electronique et de Telecommun. de Rennes (IETR), Rennes I Univ., France ; Coquet, P. ; Thouroude, D. ; Daniel, J.P.

A new structure of millimetre-wave focusing antennas is presented. It consists of a plane-parallel Fabry-Perot resonator comprising two uniform and non-uniform inductive metal meshes excited by a horn antenna. The beam focusing is performed with the non-uniform mirror, the geometry of which is chosen so that it behaves as a spherical equiphase surface with a desired radius of curvature. The resulting radiation patterns are Gaussian; their directivity is controlled by the curvature of the synthesised wavefront. This concept is successfully validated in the 60 GHz band.

Published in:

Electronics Letters  (Volume:39 ,  Issue: 4 )