Reconstructions of effective parameters for a metamaterial antenna via 3D-printed components

Yılmaz, Hasan Önder; Yaman, Fatih

doi:10.1080/09205071.2022.2037470

Cited by 2 publications

(2 citation statements)

References 42 publications

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“…Furthermore, precisely engineered coupling adapters are needed to use the operating range of waveguides efficiently. From these perspectives, additively manufactured structures for the desired frequency bands offer a good alternative as were employed in one of our former studies [7]. For this work, the Sband waveguide and its adapters were designed, then the complete experimental setup for the conductivity measurements was modeled in the simulator.…”

Section: Analyses For the Tape Conductivitymentioning

confidence: 99%

“…As in many fields of science, additive manufacturing technology in prototyping and measurement tasks paves the way for low-cost and fast experimental studies. For instance in electromagnetics, the printed structures focused on antenna applications [1,2], are also used in microwave filters [3], dielectric sample production [4], cavity prototyping [5,6], metamaterial characterization [7], visualization of antenna radiation characteristics [8], etc. In this way, the budgets of the experimental studies reduce, flexibility for testing ideas expands, and measurement results are collected in shorter time frames.…”

Section: Introductionmentioning

confidence: 99%

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Cost-effective experiments with additively manufactured waveguide and cavities in the S-band

Karatay

Yılmaz

Özkal

et al. 2023

Meas. Sci. Technol.

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This study demonstrates the applicability of additively manufactured components that are metalized with conductive tape for two different microwave experiments. We focus on dielectric measurements and prototyping elliptical accelerator cavities at a low power regime for 2.45 GHz. To illustrate the accuracy of our results for the commonly used solid/liquid materials in engineering and to compare the fundamental accelerator cavity parameters with previous research rectangular and elliptic 3D-printed cavities coated with aluminum-type tape were employed in the experiments. Results reported for the complex-valued permittivities and specific design parameters for the cavity prototype are consistent with the literature. Various approaches to obtain the conductivity value of the tape and the effect of the roughness/thickness of the coating on the reflection parameter are discussed in detail. We confirm the effectiveness of the proposed approach, which reduces costs and provides a high degree of accuracy for investigated applications.

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Section: Analyses For the Tape Conductivitymentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Cost-effective experiments with additively manufactured waveguide and cavities in the S-band

Karatay

Yılmaz

Özkal

et al. 2023

Meas. Sci. Technol.

Self Cite

View full text Add to dashboard Cite

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Nonreciprocal transmission enabled by time modulation of penetrable metasurface assisted by surface waves

Yılmaz,

Yaman

2024

Journal of Applied Physics

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This study introduces a novel approach to achieving nonreciprocal transmission by implementing time modulation to the bianisotropic metasurface. For the first time, we present the analytical solution of the excitation of anti-symmetric surface waves on penetrable metasurfaces depending on the excitation direction. Exploiting this finding, we numerically demonstrate asymmetric control of the transmission coefficient under a fast-time scale by employing solely time modulation. This approach lowers the complexity of the modulation scheme and implementation encountered in the space-time modulation technique. We develop and simulate a 3D unit cell model in the microwave domain, which forms a surface cavity that incorporates time-varying capacitors. The impedance transfer matrix method and harmonic balance numerical solutions are applied to the retrieved equivalent circuit for the numerical simulations. The results reveal optimized phase-coherent and incoherent nonreciprocal transmission at the significant isolation level (≥40 dB) for forward and backward transmissions. We discuss the consistency and discrepancies between numerical methods and consider the impact of the losses and nonlinearity on the metastructure performance.

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Reconstructions of effective parameters for a metamaterial antenna via 3D-printed components

Cited by 2 publications

References 42 publications

Cost-effective experiments with additively manufactured waveguide and cavities in the S-band

Cost-effective experiments with additively manufactured waveguide and cavities in the S-band

Nonreciprocal transmission enabled by time modulation of penetrable metasurface assisted by surface waves

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