Autor: Vescovo, R. - Katalog OPAC zbiorów

Skocz do pozycji: 1.

Tytuł:: Multiple-ring Circular Arrayfor Ground-Penetrating Radar Applications : Basic Ideas and Preliminary Results
Autorzy:: Vescovo, R.
Pajewski, L.
Powiązania:: https://bibliotekanauki.pl/articles/308705.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: antenna array
ultra-wideband
Ground Penetrating Radar
Opis:: In this paper, the possibility of using a multiple-ring circular array as an antenna array for Ground-Pene-trating Radar systems is investigated. The theory behind theproposed idea is presented. The preliminary numerical re-sults that are obtained suggest that the proposed congura-tion is promising. It allows achieving a wide frequency bandand low dynamic range ratio of excitations, thus simplifyingthe feeding network. Further interesting requirements maybe satised by exploiting a combination of deterministic andstochastic synthesis techniques to design the array.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 3; 25-29
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 2.

Tytuł:: Reconfigurable Antenna Arrays with Phase-only Control in the Presence of Near-field Nulls
Autorzy:: Buttazzoni, G.
Vescovo, R.
Powiązania:: https://bibliotekanauki.pl/articles/308578.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: antenna arrays
near-ﬁeld nulls
phase-only control
power synthesis
reconfigurability
Opis:: In this paper an effective iterative method is presented for the power synthesis of reconfigurable antenna arrays. The algorithm is suitable for arrays of arbitrary geometry, including the case where a large number of elements is involved. The reconfigurability is achieved by phase-only control, so that the excitation amplitude of each array element remains constant during the reconfiguration process. Such amplitudes may be different from one array element to the others, and they are not assigned a priori, but are optimized. Furthermore, the electric field is imposed to vanish in a number of prescribed points of the near-field region, so that a strong field reduction is obtained in a neighborhood of them.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 3; 88-93
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

Skocz do pozycji: 3.

Tytuł:: Multi-Objective Evolutionary Optimization of Aperiodic Symmetrical Linear Arrays
Autorzy:: Napoli, F.
Pajewski, L.
Vescovo, R.
Marciniak, M.
Powiązania:: https://bibliotekanauki.pl/articles/308614.pdf
Data publikacji:: 2017
Wydawca:: Instytut Łączności - Państwowy Instytut Badawczy
Tematy:: antenna array
Dolph-Chebyshev array
genetic algorithms
Opis:: In this paper, a multi-objective approach is applied to the design of aperiodic linear arrays of antennas. The adopted procedure is based on a standard Matlab implementation of the Controlled Elitist Non-Dominated Sorting Genetic Algorithm II. Broadside symmetrical arrays of isotropic radiators are considered with both uniform and non-uniform excitations. The work focuses on whether, and in which design conditions, the aperiodic solutions obtained by the adopted standard multi-objective evolutionary procedure can approximate or outperform the Pareto-optimal front for the uniformspacing case computable by the Dolph-Chebyshev method.
Źródło:: Journal of Telecommunications and Information Technology; 2017, 3; 79-87
1509-4553
1899-8852
Pojawia się w:: Journal of Telecommunications and Information Technology
Dostawca treści:: Biblioteka Nauki

Artykuł

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