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- W4280495225 abstract "The structural, morphological, and wideband electromagnetic response of ( 1-x) MgFe 1.98 O 4 + x BaFe 12 O 19 composites with x = 20, 40, 60, and 80 wt percent (wt%) were investigated. The composites' sintering temperature was optimised to be 1250 °C for 2 h. The phase purity and independent existence of the end members in the composites were verified using XRD, Raman and FTIR spectroscopy. The microstructures of the sintered composites indicate the effect of grain growth on the density and grain packing efficiency. The relative permittivity of the composites is in the 9–11 range, while the relative permeability is between 1.4 and 2.8. The increase in BaFe 12 O 19 concentration from 20 to 80 wt% resulted in a dilution effect in permeability and enhanced saturation magnetization and coercive field strength. The composites with 20–80 wt% BaFe 12 O 19 possess a characteristic impedance ranging from 0.55 to 0.38 and a miniaturisation factor ranging from 5.16 to 3.82 at 900 MHz. The composites containing 20 and 40 wt% BaFe 12 O 19 exhibited appreciable miniaturisation factors of 5.16 and 5.24, respectively, with characteristic impedances of 0.55 and 0.47. Furthermore, these composites have low magnetic and dielectric losses of the order of 10 −1 and 10 −3 , respectively, making them suitable candidates for resonator antenna applications. A magneto-dielectric resonator antenna using the composite comprising 40 wt% BaFe 12 O 19 , with a density greater than 95%, was designed, simulated and fabricated. The fabricated magneto-dielectric resonator antenna resonated at a frequency of 14.7 GHz, with a significantly low return loss of −44 dB and wide impedance bandwidth of 1.44 GHz, suggesting the application potential of the dual-ferrite composite in the Ku-band frequency range." @default.
- W4280495225 created "2022-05-22" @default.
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- W4280495225 date "2022-09-01" @default.
- W4280495225 modified "2023-09-27" @default.
- W4280495225 title "MgFe1.98O4 – BaFe12O19 magneto-dielectric composites based ferrite resonator antenna for super-high frequency applications" @default.
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- W4280495225 doi "https://doi.org/10.1016/j.ceramint.2022.05.095" @default.
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