The paper discusses the possibility of using a radial line slot array (RLSA) for simultaneously generating, in the microwave frequency band, several pseudo-Bessel beams having an azimuthal field variation characteristic of vortex modes. A specific application for non-contact microwave detection of buried objects has been considered as test case. The design benefits of Butler matrix network to provide the correct phase progression along the azimuthal coordinate, and it makes use of a holographic approach to assure the required aperture field distribution.
Simultaneous Generation of Near-Field Radiating Zone Vortex Modes by a RLSA Antenna / Agnese, Mazzinghi; Angelo, Freni. - ELETTRONICO. - (2017), pp. 1-4. (Intervento presentato al convegno 2017 11th European Conference on Antennas and Propagation, EUCAP 2017 tenutosi a Paris nel 19-24 March 2017).
Simultaneous Generation of Near-Field Radiating Zone Vortex Modes by a RLSA Antenna
Agnese Mazzinghi
;Angelo Freni
2017
Abstract
The paper discusses the possibility of using a radial line slot array (RLSA) for simultaneously generating, in the microwave frequency band, several pseudo-Bessel beams having an azimuthal field variation characteristic of vortex modes. A specific application for non-contact microwave detection of buried objects has been considered as test case. The design benefits of Butler matrix network to provide the correct phase progression along the azimuthal coordinate, and it makes use of a holographic approach to assure the required aperture field distribution.
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