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Gonzalez De Aza MaAuthorCorcoles JAuthor

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August 8, 2022
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Scan-angle-independent FEM Analysis of Infinite Arrays based on Spherical Harmonic Lattice Sums and the Generalized Scattering Matrix of an Isolated Antenna

Publicated to: IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION. 70 (11): 10445-10453 - 2022-11-01 70(11), DOI: 10.1109/TAP.2022.3191751

Authors:

Rubio, J; de Aza, MAG; Córcoles, J; Alcalá, RG
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Affiliations

Univ Autonoma Madrid, Escuela Politecn Super, Madrid 28049, Spain - Author
Univ Extremadura, Escuela Politecn, Caceres 10003, Spain - Author
Univ Politecn Madrid UPM, Informat Proc & Telecommun Ctr, Madrid 28040, Spain - Author
Universidad Autónoma de Madrid - Author
Universidad de Extremadura - Author
Universidad Politécnica de Madrid - Author
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Abstract

Infinite periodic arrays of antennas that can be individually described by means of spherical modes are analyzed starting from the Generalized Scattering Matrix (GSM) of an isolated element. After computing the Generalized Scattering Matrix of an isolated element with the Finite Element Method, a fast post-processing can be carried out to calculate the response of the element in an infinite array environment by using addition theorems for spherical modes. For this purpose, an efficient computation of lattice sums of spherical harmonics is used. The main advantage of this method is that the antenna is analyzed only once whatever the array lattice or scan angle. Additionally, fast frequency analysis can be performed since the starting point is the computation of the isolated antenna with the Finite Element Method, which is suitable for fast frequency sweep. The active reflection coefficient and the embedded radiation pattern of the infinite periodic array are calculated for several examples to show the capabilities of the proposed method.
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Keywords

computationdoubly periodic structureselectron-diffractionfinite element method (fem)full-wave analysisgeneralized scattering matrix (gsm)helmholtzlattice sumsradiationspherical modesAddition theoremsAntenna arraysAntenna theoryFinite element analysisFinite element methodFinite-element-analysisGeneralized scattering matrixGsmLattice sumsLatticesPhased arraysScatteringSpherical modes

Quality index

Bibliometric impact. Analysis of the contribution and dissemination channel

The work has been published in the journal IEEE TRANSACTIONS ON ANTENNAS AND PROPAGATION due to its progression and the good impact it has achieved in recent years, according to the agency WoS (JCR), it has become a reference in its field. In the year of publication of the work, 2022, it was in position 55/275, thus managing to position itself as a Q1 (Primer Cuartil), in the category Engineering, Electrical & Electronic.

Independientemente del impacto esperado determinado por el canal de difusión, es importante destacar el impacto real observado de la propia aportación.

Según las diferentes agencias de indexación, el número de citas acumuladas por esta publicación hasta la fecha 2026-04-05:

  • WoS: 1
  • Scopus: 1
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Impact and social visibility

From the perspective of influence or social adoption, and based on metrics associated with mentions and interactions provided by agencies specializing in calculating the so-called "Alternative or Social Metrics," we can highlight as of 2026-04-05:

  • The use of this contribution in bookmarks, code forks, additions to favorite lists for recurrent reading, as well as general views, indicates that someone is using the publication as a basis for their current work. This may be a notable indicator of future more formal and academic citations. This claim is supported by the result of the "Capture" indicator, which yields a total of: 3 (PlumX).

It is essential to present evidence supporting full alignment with institutional principles and guidelines on Open Science and the Conservation and Dissemination of Intellectual Heritage. A clear example of this is:

  • The work has been submitted to a journal whose editorial policy allows open Open Access publication.
  • Assignment of a Handle/URN as an identifier within the deposit in the Institutional Repository: https://repositorio.uam.es/handle/10486/710988
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