On the theoretical maximum directivity of a radiating aperture from modal field expansions

Polo López, Lucas and Córcoles Ortega, Juan and Ruiz Cruz, Jorge A. and Montejo Garai, José R. and Rebollar Machain, Jesús María (2019). On the theoretical maximum directivity of a radiating aperture from modal field expansions. "Ieee Transactions on Antennas And Propagation", v. 67 (n. 4); pp. 2781-2786. ISSN 0018-926X. https://doi.org/10.1109/TAP.2019.2896660.

Description

Title: On the theoretical maximum directivity of a radiating aperture from modal field expansions
Author/s:
  • Polo López, Lucas
  • Córcoles Ortega, Juan
  • Ruiz Cruz, Jorge A.
  • Montejo Garai, José R.
  • Rebollar Machain, Jesús María
Item Type: Article
Título de Revista/Publicación: Ieee Transactions on Antennas And Propagation
Date: April 2019
ISSN: 0018-926X
Volume: 67
Subjects:
Freetext Keywords: Antenna radiation pattern synthesis; apertures; directivity; modal field; optimization methods
Faculty: E.T.S.I. Telecomunicación (UPM)
Department: Otro
Creative Commons Licenses: Recognition - No derivative works - Non commercial

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Abstract

This communication addresses the maximization of the directivity from a radiating aperture through the derivation of a closedform expression for the modal field amplitudes whose field distribution at the aperture maximizes the directivity in a desired direction. This closedform expression arises from a convex formulation of the maximization problem (as a ratio of two Hermitian forms), which mathematically ensures that the achieved directivity value is the global maximum for a specified number of propagating modes. The proposed technique, which is valid for any aperture shape and polarization, is discussed and compared with previous work. Several numerical examples considering different main lobe directions, aperture geometries, and polarizations are presented. To verify the numerical results, radiation patterns and directivity values are computed using both commercial tools and in-house developed software.

Funding Projects

TypeCodeAcronymLeaderTitle
Government of SpainTEC2016-76070-C3-1/2-RFEDERUnspecifiedUnspecified
Madrid Regional GovernmentS2013/ICE-3000SPADERADARCMUnspecifiedSpace Debris Radar-Radar para detección de basura espacial

More information

Item ID: 63974
DC Identifier: http://oa.upm.es/63974/
OAI Identifier: oai:oa.upm.es:63974
DOI: 10.1109/TAP.2019.2896660
Official URL: https://ieeexplore.ieee.org/document/8631145
Deposited by: Memoria Investigacion
Deposited on: 10 Nov 2020 15:52
Last Modified: 10 Nov 2020 15:52
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