The exploitation of Orbital Angular Momentum (OAM) is proposed to design circular-support continuous aperture distributions and concentric-ring arrays for target-localization applications. The proposed approach allows generating a single isolated null of the field in the target direction, which is of interest with respect to common techniques leading to a line (or perpendicular lines) of power-pattern zeroes in the spectral plane. In the presented design procedure, the optimal continuous aperture source is first identified by resorting to the most suitable OAM vortex and effective tools such as the Singular Value Decomposition (SVD) of the involved operator and a smart Convex Programming (CP) optimization. Then, by exploiting fast deterministic algorithms, this continuous source is discretized into circular-ring arrays emulating it at best. Relevant applications including equispaced arrays, sum-difference reconfigurable arrays, and isophoric sparse arrays are presented. The proposed approach is also compared with the state-of-the-art techniques and assessed through full-wave electromagnetic simulations.

Synthesis of Orbital Angular Momentum Antennas for Target Localization / Battaglia, Giada M.; Isernia, Tommaso; Palmeri, Roberta; Morabito, Andrea F.. - In: RADIO SCIENCE. - ISSN 0048-6604. - 58:2(2023), pp. 1-15. [10.1029/2022RS007592]

Synthesis of Orbital Angular Momentum Antennas for Target Localization

Battaglia, Giada M.;Isernia, Tommaso;Palmeri, Roberta;Morabito, Andrea F.
2023-01-01

Abstract

The exploitation of Orbital Angular Momentum (OAM) is proposed to design circular-support continuous aperture distributions and concentric-ring arrays for target-localization applications. The proposed approach allows generating a single isolated null of the field in the target direction, which is of interest with respect to common techniques leading to a line (or perpendicular lines) of power-pattern zeroes in the spectral plane. In the presented design procedure, the optimal continuous aperture source is first identified by resorting to the most suitable OAM vortex and effective tools such as the Singular Value Decomposition (SVD) of the involved operator and a smart Convex Programming (CP) optimization. Then, by exploiting fast deterministic algorithms, this continuous source is discretized into circular-ring arrays emulating it at best. Relevant applications including equispaced arrays, sum-difference reconfigurable arrays, and isophoric sparse arrays are presented. The proposed approach is also compared with the state-of-the-art techniques and assessed through full-wave electromagnetic simulations.
2023
Antennas
Electromagnetic theory
Antenna arrays
File in questo prodotto:
File Dimensione Formato  
Battaglia_2023_RS_Synthesis_editor.pdf

accesso aperto

Descrizione: Versione editoriale
Tipologia: Versione Editoriale (PDF)
Licenza: Creative commons
Dimensione 1.75 MB
Formato Adobe PDF
1.75 MB Adobe PDF Visualizza/Apri

I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.

Utilizza questo identificativo per citare o creare un link a questo documento: https://hdl.handle.net/20.500.12318/133886
Citazioni
  • ???jsp.display-item.citation.pmc??? ND
  • Scopus 4
  • ???jsp.display-item.citation.isi??? 5
social impact