Electrical properties of spherical dipole antennas with lossy material cores
Publication: Research - peer-review › Article in proceedings – Annual report year: 2012
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Electrical properties of spherical dipole antennas with lossy material cores. / Hansen, Troels Vejle; Kim, Oleksiy S.; Breinbjerg, Olav.
In: 2012 6th European Conference on Antennas and Propagation. IEEE, 2012. p. 2474 - 2478 .Publication: Research - peer-review › Article in proceedings – Annual report year: 2012
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TY - GEN
T1 - Electrical properties of spherical dipole antennas with lossy material cores
A1 - Hansen,Troels Vejle
A1 - Kim,Oleksiy S.
A1 - Breinbjerg,Olav
AU - Hansen,Troels Vejle
AU - Kim,Oleksiy S.
AU - Breinbjerg,Olav
PB - IEEE
PY - 2012
Y1 - 2012
N2 - A spherical magnetic dipole antenna with a linear, isotropic, homogenous, passive, and lossy material core is modeled analytically, and closed form expressions are given for the internally stored magnetic and electric energies, the radiation efficiency, and radiation quality factor. This model and all the provided expressions are exact and valid for arbitrary core sizes, permeability, permittivity, electric and magnetic loss tangents. Arbitrary dispersion models for both permeability and permittivity can be applied. In addition, we present an investigation for an antenna of fixed electrical size and permittivity, focusing on the effects of magnetic core losses for a simple magnetic dispersion model, to illustrate how stored energies, efficiency and quality factor are affected. This shows that large magnetic losses can be beneficial, as these can produce a relatively high efficiency.
AB - A spherical magnetic dipole antenna with a linear, isotropic, homogenous, passive, and lossy material core is modeled analytically, and closed form expressions are given for the internally stored magnetic and electric energies, the radiation efficiency, and radiation quality factor. This model and all the provided expressions are exact and valid for arbitrary core sizes, permeability, permittivity, electric and magnetic loss tangents. Arbitrary dispersion models for both permeability and permittivity can be applied. In addition, we present an investigation for an antenna of fixed electrical size and permittivity, focusing on the effects of magnetic core losses for a simple magnetic dispersion model, to illustrate how stored energies, efficiency and quality factor are affected. This shows that large magnetic losses can be beneficial, as these can produce a relatively high efficiency.
U2 - 10.1109/EuCAP.2012.6206365
DO - 10.1109/EuCAP.2012.6206365
SN - 978-1-4577-0918-0
BT - 2012 6th European Conference on Antennas and Propagation
T2 - 2012 6th European Conference on Antennas and Propagation
SP - 2474
EP - 2478
ER -