dorsal/arxiv
View SchemaMagneto-Dielectric Substrates in Antenna Miniaturization: Potential and Limitations
| Authors | Pekka Ikonen, Konstantin Rozanov, Alexey Osipov, Sergei Tretyakov |
|---|---|
| Categories | |
| ArXiv ID | physics/0603116 |
| URL | https://arxiv.org/abs/physics/0603116 |
| DOI | 10.1109/TAP.2006.884303 |
| Journal | IEEE Trans. Antennas Propag., vol. 54, no 11, pt. 2, pp. 3391-3399, 2006. |
Abstract
In the present paper we discuss antenna miniaturization using magneto-dielectric substrates. Recent results found in the literature reveal that advantages over conventional dielectric substrates can only be achieved if natural magnetic inclusions are embedded into the substrate. This observation is revised and the physical background is clarified. We present a detailed discussion concerning magnetic materials available in the microwave regime and containing natural magnetic constituents. The effects of magnetic dispersion and loss are studied: constraints on the microwave permeability are used to estimate the effect of magnetic substrates on the achievable impedance bandwidth. Microwave composites filled with thin ferromagnetic films are considered as a prospective antenna substrate. We calculate the impedance bandwidth for a $\lambda/2$-patch antenna loaded with the proposed substrate, and challenge the results against those obtained with conventional dielectric substrates. It is shown that the radiation quality factor is strongly minimized with the proposed substrate even in the presence of realistic losses. Estimates for the radiation efficiency are given as a function of the magnetic loss factor.
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"abstract": "In the present paper we discuss antenna miniaturization using\nmagneto-dielectric substrates. Recent results found in the literature reveal\nthat advantages over conventional dielectric substrates can only be achieved if\nnatural magnetic inclusions are embedded into the substrate. This observation\nis revised and the physical background is clarified. We present a detailed\ndiscussion concerning magnetic materials available in the microwave regime and\ncontaining natural magnetic constituents. The effects of magnetic dispersion\nand loss are studied: constraints on the microwave permeability are used to\nestimate the effect of magnetic substrates on the achievable impedance\nbandwidth. Microwave composites filled with thin ferromagnetic films are\nconsidered as a prospective antenna substrate. We calculate the impedance\nbandwidth for a $\\lambda/2$-patch antenna loaded with the proposed substrate,\nand challenge the results against those obtained with conventional dielectric\nsubstrates. It is shown that the radiation quality factor is strongly minimized\nwith the proposed substrate even in the presence of realistic losses. Estimates\nfor the radiation efficiency are given as a function of the magnetic loss\nfactor.",
"arxiv_id": "physics/0603116",
"authors": [
"Pekka Ikonen",
"Konstantin Rozanov",
"Alexey Osipov",
"Sergei Tretyakov"
],
"categories": [
"physics.class-ph"
],
"doi": "10.1109/TAP.2006.884303",
"journal_ref": "IEEE Trans. Antennas Propag., vol. 54, no 11, pt. 2, pp.\n 3391-3399, 2006.",
"title": "Magneto-Dielectric Substrates in Antenna Miniaturization: Potential and Limitations",
"url": "https://arxiv.org/abs/physics/0603116"
},
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