Articles | Volume 17
https://doi.org/10.5194/ars-17-65-2019
https://doi.org/10.5194/ars-17-65-2019
19 Sep 2019
 | 19 Sep 2019

Application of Kramers-Kronig transformations to increase the bandwidth of small antennas

Mostafa Bakry and Ludger Klinkenbusch

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Latest update: 13 Apr 2024
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Short summary
In this paper we explain a novel method to increase the bandwidth of a top-loaded monopole antenna by using a shield made of dispersive magnetic material. We apply the Kramers-Kronig transforms to derive physically correct real and imaginary parts of the dispersive magnetic material. We aim at a compensation of the electric by a magnetic stored energy for a wide frequency range. Independent numerical solutions using the commercial field solver CST support the results of our investiagation.