Influence of the Mesh Size on the Computation of the Close Near Fields of Dipole Antennas

Autor: Alessandra Paffi, Eduardo Carrasco, Quirino Balzano
Jazyk: angličtina
Rok vydání: 2022
Předmět:
Zdroj: IEEE Open Journal of Antennas and Propagation, Vol 3, Pp 1234-1241 (2022)
Druh dokumentu: article
ISSN: 2637-6431
DOI: 10.1109/OJAP.2022.3217069
Popis: While evaluating the near field of dipole antennas, it is noted that different software suites yield values of the electric and the magnetic fields, at the surface of antennas, that can be substantially different, especially at the tips and at the feed gap. The close near field of dipoles has not been yet analysed in detail. An asymptotic expansion method for the near fields at the surface of these antennas has been developed and compared to the computed fields. The results show that the software of the computed field should not use a uniform mesh. The mesh should be much tighter at the metal extremities than in the dipole body. The proposed technique can be used to check complex field computations, producing diverging values, with simple analytical equations.
Databáze: Directory of Open Access Journals