Fabry-Perot cavity 2-D leaky-wave antennas with polarization-reconfigurable omnidirectional conical beam are proposed. The antenna cavity is bounded by an annular, locally periodic metal partially-reflective surface and is loaded by a dielectric or a wire-medium slab, in order to suppress undesired radiation from the fundamental quasi-TEM mode. A suitable design of the partially-reflective surface and of the loading slab, based on a dispersion analysis of the linearized structure, allows for equalizing the phase and attenuation constants of the first higher-order TM<formula><tex>$_1$</tex></formula> and TE<formula><tex>$_1$</tex></formula> leaky modes around a given frequency. Omnidirectional beams with full polarization reconfigurability are then achieved through independent excitation of such modes with a pair of azimuthally independent sources. Preliminary designs, aimed at producing a conical beam with circular polarization, are presented and optimized with state-of-art simulation software.

Comite, D., Baccarelli, P., Burghignoli, P., Galli, A. (2017). Omnidirectional 2-D Leaky-Wave Antennas with Reconfigurable Polarization. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 16, 2354-2357 [10.1109/LAWP.2017.2718112].

Omnidirectional 2-D Leaky-Wave Antennas with Reconfigurable Polarization

BACCARELLI, PAOLO
Supervision
;
2017-01-01

Abstract

Fabry-Perot cavity 2-D leaky-wave antennas with polarization-reconfigurable omnidirectional conical beam are proposed. The antenna cavity is bounded by an annular, locally periodic metal partially-reflective surface and is loaded by a dielectric or a wire-medium slab, in order to suppress undesired radiation from the fundamental quasi-TEM mode. A suitable design of the partially-reflective surface and of the loading slab, based on a dispersion analysis of the linearized structure, allows for equalizing the phase and attenuation constants of the first higher-order TM$_1$ and TE$_1$ leaky modes around a given frequency. Omnidirectional beams with full polarization reconfigurability are then achieved through independent excitation of such modes with a pair of azimuthally independent sources. Preliminary designs, aimed at producing a conical beam with circular polarization, are presented and optimized with state-of-art simulation software.
2017
Comite, D., Baccarelli, P., Burghignoli, P., Galli, A. (2017). Omnidirectional 2-D Leaky-Wave Antennas with Reconfigurable Polarization. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 16, 2354-2357 [10.1109/LAWP.2017.2718112].
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Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/11590/322285
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