Benvenuti nell'Anagrafe della Ricerca d'Ateneo
La valutazione delle attività di ricerca che si svolgono nelle università ha assunto un'importanza rilevante sia per l'intero sistema universitario sia all'interno di ogni singolo ateneo. Roma Tre si è quindi dotata di idonei strumenti informativi in grado di supportare al meglio le azioni di monitoraggio e di valutazione delle attività di ricerca svolte nei propri dipartimentied ha realizzato una Anagrafe della Ricerca di Ateneo.
EnglishA multi-fed radially periodic two-dimensional leaky-wave antenna is proposed for the generation of a directional beam continuously scanning in elevation by changing the frequency, and over a discrete number of directions in azimuth when activating different elements of the feeding system. The structure is planar and constituted by a circular grounded dielectric slab loaded with microstrip rings, properly positioned around the sources to support the propagation of an angularly directional surface wave over a sector determined by the corresponding activated feeder. This produces a perturbation of the surface wave, resulting in the generation of a directional leaky wave over the aperture, whose complex propagation constant is described by a single fast backward spatial harmonic. The antenna radiation features are numerically investigated in conjunction with the dispersion analysis of the structure, validated through a conventional generalized-pencil-of-function approach. Full-wave simulations have been developed to design a practical feeder, which is constituted by a circular arrangement of commercial coaxial connectors. The proposed multi-port antenna is validated by means of measurements performed on a microwave manufactured prototype. The design represents an attractive simple and cost-effective solution to achieve a high-gain beam scanning over the three-dimensional space, alternative to more conventional phased-array design based on cumbersome and lossy feeding networks.
Comite, D., Kuznetcov, M., Buendia, V.G.-., Podilchak, S.K., Baccarelli, P., Burghignoli, P., et al. (In corso di stampa). Directive 2-D beam steering by means of a multi-port radially periodic leaky-wave antenna. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1-1.
| Titolo: | Directive 2-D beam steering by means of a multi-port radially periodic leaky-wave antenna |
| Autori: | |
| Data di pubblicazione: | Being printed |
| Rivista: | |
| Citazione: | Comite, D., Kuznetcov, M., Buendia, V.G.-., Podilchak, S.K., Baccarelli, P., Burghignoli, P., et al. (In corso di stampa). Directive 2-D beam steering by means of a multi-port radially periodic leaky-wave antenna. IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION, 1-1. |
| Handle: | http://hdl.handle.net/11590/376572 |
| Appare nelle tipologie: | 1.1 Articolo in rivista |
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