Magnetic materials for mobile communication antennas substrate application

Chen, Hui; Liang, Difei; Li, Weijia; Pang, Chao

doi:10.1088/1757-899x/265/1/012005

Cited by 2 publications

(1 citation statement)

References 3 publications

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“…It was reported in the literature that employing as an antenna substrate reduces antenna scaling and magnetic losses [ 11 ]. However, a Dy-Sm doped Mg-ferrite substrate decreased antenna properties due to the ferrite’s high dielectric constant [ 12 ]. A 2x2 MIMO antenna on a ferrite substrate resulted in a lower gain of -8.83 dBi [ 13 ].…”

Section: Introductionmentioning

confidence: 99%

Synthesis and characterization of cerium doped NiZn nano ferrites as substrate material for multi band MIMO antenna

Asif,

Aziz,

Akhtar

et al. 2024

PLoS ONE

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In addressing issues related to electromagnetic interference, the demand for ferrite materials with exceptional magnetic and dielectric properties has escalated recently. In this research, sol-gel auto combustion technique prepared Nickel zinc ferrites substituted with cerium, denoted as Ni0.5Zn0.5Ce0.02Fe1.98O4.X-ray diffraction (XRD), Vibrating Sample Magnetometer (VSM), and Field Emissions Scanning Electron Microscope (FESEM) were used to investigate the structure, magnetic properties, and morphology of Cerium doped NiZn Nano ferrites, respectively. The magnetic and dielectric properties of the sample was examined within a frequency range of 2.5–5.5 GHz. Sample exhibits low permittivity (2.2), high permeability (1.4), low dielectric (0.35) and magnetic loss tangent (-0.5) and highest saturation magnetization measuring 30.28 emu/g. A Novel Double-band, 4x4 MIMO window grill-modeled antennas operating on 3.5 GHz and 4.8 GHz frequency bands for 5G smartphones is designed using the CST microwave studio suite. The performance of window grilled 4x4 MIMO antenna model with Cerium doped NiZn nano ferrites as substrate, is investigated and found the return loss of -35 and -32 dB, with the bandwidth of 200MHz, gain (1.89 & 4.38dBi), envelope correlation coefficient (0.00185), channel capacity loss (0.2bps/Hz), and interterminal isolation of (22& 19dB).The results show that the antenna size is reduced with improved bandwidth, higher isolation and better diversity gain performance using Cerium doped NiZn nano ferrite substrate compared to conventional dielectric substrates.

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