An Effective-Current Approach for Hall\'{e}n's Equation in Center-Fed Dipole Antennas with Finite Conductivity
| Autor: | Mavrogordatos, Themistoklis K., Papathanasopoulos, Anastasios, Fikioris, George |
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| Rok vydání: | 2019 |
| Předmět: | |
| Zdroj: | IEEE Transactions on Antennas and Propagation, Vol. 67, Issue 6, June 2019 |
| Druh dokumentu: | Working Paper |
| DOI: | 10.1109/TAP.2019.2902714 |
| Popis: | We propose a remedy for the unphysical oscillations arising in the current distribution of carbon nanotube and imperfectly conducting antennas center-driven by a delta-function generator when the approximate kernel is used. We do so by formulating an effective current, which was studied in detail in a 2011 and a 2013 paper for a perfectly conducting linear cylindrical antenna of infinite length, with application to the finite-length antenna. We discuss our results in connection with the perfectly conducting antenna, providing perturbative corrections to the current distribution for a large conductance, as well as presenting a delta-sequence and the field of a Hertzian dipole for the effective current in the limit of vanishing conductance. To that end, we employ both analytical tools and numerical methods to compare with experimental results. Comment: 3 figures, 2 appendices, corrected bibliography, corrected typos in Eqs. (17, 18) |
| Databáze: | arXiv |
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