Steerable microwave antenna and method thereof
Serra, João C. Serra
;
Matos, S.A.
; Fonseca, N.
;
Fernandes, C. A.
;
Felício, J. M.
;
Costa, J.R.
Instituto de Telecomunicações, Instituto Superior Técnico, ISCTE - Instituto Universitário de Lisboa
Invention Title: Double-layer focusing Risley prism antenna
Patent Nr.: PCT/PT2024/050021
Type: Patent
Regional Coverage: PCT
Grant Status: Pending
Priority Date: 09-06-2023
Filing Date: 11-06-2024
External Links:
Abstract
The present document discloses a steerable-beam microwave antenna, arranged for steering a beam relative to a longitudinal axis of the antenna, comprising: a discrete transmitarray comprising a plurality of sub-wavelength phase-shifting unit-cells, rotatably mounted for rotating about said longitudinal axis, having an aperture orthogonal to said longitudinal axis; a feeder for emitting and/or receiving a microwave signal to and/or from the discrete transmitarray, comprising at least one rotatable feeding part; wherein the unit-cell layout of the discrete transmitarray has a phase distribution which superimposes a phase gradient along a transversal axis orthogonal to said longitudinal axis and a rotationally-symmetric phase correction centred on said longitudinal axis. It is also disclosed a method for operating and a method of manufacturing said steerable-beam microwave antenna.
