A printed annular reconfigurable metasurface (ARM) comprised of concentric ring slots etched in a metal screen loaded by stubs and varactor diodes is proposed to realize two-dimensional leaky-wave antennas (LWAs) operating on a pair of azimuthally independent TM and TE cylindrical leaky modes. The metasurface, used as a superstrate for a grounded dielectric slab, is designed to achieve wavenumber equalization of the two modes. These are excited independently by means of a vertical coaxial probe and a horizontal microstrip loop, thus allowing for radiation of an omnidirectional conical beam with reconfigurable beam angle and polarization. Theoretical and numerical investigations are presented, including an ad-hoc moment-method approach for the calculation of the antenna far-field patterns.

Baccarelli, P., & Galli, A. (2013). Annular Reconfigurable Metasurface for Omnidirectional Dual-Pol Leaky-Wave Antennas. In Proc. EuCAP 2013 (pp.1834-1835). IEEE.

Annular Reconfigurable Metasurface for Omnidirectional Dual-Pol Leaky-Wave Antennas

BACCARELLI, PAOLO;GALLI, ALESSANDRO
2013

Abstract

A printed annular reconfigurable metasurface (ARM) comprised of concentric ring slots etched in a metal screen loaded by stubs and varactor diodes is proposed to realize two-dimensional leaky-wave antennas (LWAs) operating on a pair of azimuthally independent TM and TE cylindrical leaky modes. The metasurface, used as a superstrate for a grounded dielectric slab, is designed to achieve wavenumber equalization of the two modes. These are excited independently by means of a vertical coaxial probe and a horizontal microstrip loop, thus allowing for radiation of an omnidirectional conical beam with reconfigurable beam angle and polarization. Theoretical and numerical investigations are presented, including an ad-hoc moment-method approach for the calculation of the antenna far-field patterns.
9781467321877
Baccarelli, P., & Galli, A. (2013). Annular Reconfigurable Metasurface for Omnidirectional Dual-Pol Leaky-Wave Antennas. In Proc. EuCAP 2013 (pp.1834-1835). IEEE.
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/11590/327930
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