An annular periodic leaky-wave antenna (LWA) fed by a simple azimuth-symmetric source is designed to generate a high-gain omnidirectional conical beam pattern which scans with frequency over a wide angular range. The proposed structure is defined by a finite metallic radial strip grating printed on a grounded dielectric slab which supports an n = 0 cylindrical leaky wave (CLW) mode. The distinctive features of CLWs supported by such a truncated structure are also highlighted and discussed. The directional far-field pattern generated by the proposed LWA, in conjunction with its non-diffracting and wideband behavior in the near-field (as previously reported by the authors), defines an original dual-operational LWA. Possible applications include next-generation wireless power transfer systems that provide functionality in both the near and far field, vehicle roof-mounted antennas for base-station data connectivity as well as future short-range near-field communications, and object tracking by device ceiling-mounting for indoor localization.
Comite, D., Gomez-Guillamon Buendia, V., Podilchak, S.K., Di Ruscio, D., Baccarelli, P., Burghignoli, P., et al. (2018). Planar Antenna Design for Omnidirectional Conical Radiation through Cylindrical Leaky Waves. IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS, 17(10), 1837-1841 [10.1109/LAWP.2018.2867829].
Planar Antenna Design for Omnidirectional Conical Radiation through Cylindrical Leaky Waves
Baccarelli, Paolo;
2018-01-01
Abstract
An annular periodic leaky-wave antenna (LWA) fed by a simple azimuth-symmetric source is designed to generate a high-gain omnidirectional conical beam pattern which scans with frequency over a wide angular range. The proposed structure is defined by a finite metallic radial strip grating printed on a grounded dielectric slab which supports an n = 0 cylindrical leaky wave (CLW) mode. The distinctive features of CLWs supported by such a truncated structure are also highlighted and discussed. The directional far-field pattern generated by the proposed LWA, in conjunction with its non-diffracting and wideband behavior in the near-field (as previously reported by the authors), defines an original dual-operational LWA. Possible applications include next-generation wireless power transfer systems that provide functionality in both the near and far field, vehicle roof-mounted antennas for base-station data connectivity as well as future short-range near-field communications, and object tracking by device ceiling-mounting for indoor localization.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.