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Printed inverted-F antennas over lossy magneto-dielectric materials: Theoretical approach and validations

Abstract : Closed-form formulas for radiation efficiency and bandwidth predictions, suitable for printed inverted-F antennas (PIFAs) over lossy magneto-dielectric materials, are proposed. The formulation uses the field expressions inside the cavity for the first resonant-mode (fundamental mode) based on the cavity model. It includes the substrate effective permittivity (ε re) and permeability (µ re) in addition to the radiation from both the shorting-pad and the slot. The derived expressions for efficiency and bandwidth are validated with measurements and full-wave CST simulations based on the finite integration technique. Various sizes and types of magneto-dielectric materials are considered. It is noticed that magneto-dielectric materials having √(ε re µ re) > ε r or simply with µ r > ε r are advantageous for both radiation efficiency and bandwidth enhancement.
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https://hal-normandie-univ.archives-ouvertes.fr/hal-02428424
Contributor : Constant Niamien <>
Submitted on : Sunday, January 5, 2020 - 11:22:38 PM
Last modification on : Wednesday, October 14, 2020 - 3:53:37 AM

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Constant Niamien, Manouan Aka Constant Niamien, Sylvain Collardey, Ala Sharaiha, Kourosh Mahdjoubi. Printed inverted-F antennas over lossy magneto-dielectric materials: Theoretical approach and validations. IET Microwaves Antennas and Propagation, Institution of Engineering and Technology, 2014, 8 (7), pp.513-522. ⟨10.1049/iet-map.2013.0244⟩. ⟨hal-02428424⟩

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