Magnetodielectric Substrates in Antenna Miniaturization: Potential and Limitations
By P. Ikonen, Konstantin N. Rozanov, Alexey V. Osipov, Sergei A. Tretyakov. IEEE Transactions on Antennas and Propagation, 2006
235 citations recorded by the source corpus.
We discuss patch antenna miniaturization using magnetodielectric substrates. Recent results found in the literature reveal that with passive substrates 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 of a lambda/2-patch antenna loaded with the proposed substrate, and challenge the results against those obtained with conventional dielectric substrates. The results are verified using full-wave simulations, and 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
Subfields: Aerospace Engineering, Electronic, Optical and Magnetic Materials
View Paper: https://www.semanticscholar.org/paper/286cceba446a93cb0fb1391478f17a61fd1a21b8
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Citations in the corpus
- Antenna Miniaturization Techniques: A Review of Topology- and Material-Based Methods (2018, background): “A high dielectric constant substrate can result in difficulties in antenna impedance matching and narrow bandwidth [34].”
- Bulk Acoustic Wave-Mediated Multiferroic Antennas: Architecture and Performance Bound (2015, result): “The concept of utilizing high-permeability magnetic material to lower the radiation quality factor is consistent with approaches attempted in [3]–[5].”