Advances in Radio Science
Advances in Radio Science
ARS
Articles | Volume 17
Articles | Volume 17
https://doi.org/10.5194/ars-17-65-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
https://doi.org/10.5194/ars-17-65-2019
© Author(s) 2019. This work is distributed under
the Creative Commons Attribution 4.0 License.
Articles | Volume 17
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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Using The Kramers-Kronig Transforms To Retrieve The Conductivity From The Effective Complex Permittivity
Mostafa Bakry and Ludger Klinkenbusch
Adv. Radio Sci., 16, 23–28, https://doi.org/10.5194/ars-16-23-2018,https://doi.org/10.5194/ars-16-23-2018, 2018
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Cited articles

Bakry, M. and Klinkenbusch, L.: Using The Kramers-Kronig Transforms To Retrieve The Conductivity From The Effective Complex Permittivity, Adv. Radio Sci., 16, 23–28, https://doi.org/10.5194/ars-16-23-2018, 2018. a
Best, S. R.: A Low Q Electrically Small Magnetic (TE Mode) Dipole, IEEE Antenn. Wirel. Pr., 8, 572–575, 2009. a
Chew, W. C. and Kong, J. A.: Effects of Fringing Fields on the Capacitance of Circular Microstrip Disk, IEEE T. Microw. Theory, 28, 98–104, 1980. a
Chu, L. J.: Physical Limitations of Omni-Directional Antennas, J. Appl. Phys., 19, 1163–1175, 1948.  a
Hansen, R. C. and Collin, R. E.: Small Antenna Handbook, Wiley and IEEE Press, 2011. a, b
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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.
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