Experimental and numerical investigation of the microwave dielectric properties of the MgTiO3 ceramic matrix added with CaCu3Ti4O12

Oliveira, P. W. S.; Pires, G.F.M.; Sales, A. J. M.; Rodrigues, H. O.; Sombra, A. S. B.

doi:10.1590/2179-10742017v16i2794

Cited by 6 publications

(1 citation statement)

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“…The dielectric resonator antennas (DRAs) have been investigated by several researchers in recent years, due to their attractive advantages, such as high dielectric constant (fundamental for the reduction of the size of the antennas), low metallic losses, broadband width, excitation facility, among others, has been incorporated to allow greater quality in the communication systems [1]- [5].…”

Section: Introductionmentioning

confidence: 99%

YIG Matrix Based Multiband Magneto-Dielectric Cylindrical Resonator Antenna

Costa

Fontgalland

Neto

et al. 2021

J. Microw. Optoelectron. Electromagn. Appl.

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A multiband magneto-dielectric resonator antenna with cylindrical geometry is proposed in this paper. The resonator is composed of yttrium iron garnet (YIG) with chemical composition Y3Fe2(FeO4)3. The final structure is built on a low-cost FR4 dielectric substrate. With only one resonator, the antenna is able to resonate in three distinct controlled frequency bands. These are the three propagation modes HEM11δ, TE01δ, and TM01δ, which are possible to be independently controlled at each input port of the resonator antenna. The resonator's port was suitable designed to feed specific modes of the antenna using microstrip lines placed judiciously to excite each mode. Analytic, numerical, and experimental studies were performed and, after optimization, the final antenna design was obtained. The obtained simulated and measured S-parameters results are below -10 dB at the resonance frequencies 5.75 GHz, 6.86 GHz, and 8.37 GHz. The corresponding measured bandwidths are 370 MHz, 120 MHz, and 1060 MHz, respectively. The antenna has a total size of 32.5 × 32.5 × 8.35 mm³. Measured radiation patterns and gain are also presented and show good agreement when compared to simulated results.

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Section: Introductionmentioning

confidence: 99%