A5051636275- Antenna Design and Analysis
- Energy Harvesting in Wireless Networks
- Wireless Power Transfer Systems
- Metamaterials and Metasurfaces Applications
- Wireless Body Area Networks
- Advanced Antenna and Metasurface Technologies
Vietnam Academy of Science and Technology
2021-2024
Abstract In this article, we investigated the efficiency of a magnetic resonant wireless power transfer (MR-WPT) in conducting medium and found out an optimal frequency for designing system. environment, eddy current loss is generated by high-frequency alternating currents coils. It manifested increased radiation resistance resonator coil leads to decrease quality factor ( Q -factor), which reduces (WPT) medium. The -factor strongly depending on conductivity, frequency, thickness block. Two...
Enhancing the efficiency is an essential target of wireless power transfer (WPT) technology. Enabling WPT systems requires careful control to prevent from being transferred unintended areas. This in improving and minimizing flux leakage that might otherwise occur. Selective field localization can effectively reduce systems. In this work, we propose a method using digital honeycomb metamaterial structure has property operation as function switching between 0 1 states. These cavities were...
Abstract In this work, we investigate the propagation of magneto-inductive waves (MIWs) in ordering magnetic metamaterial (MM) structures. The proposed non-homogeneous MM slab consists 9 × unit cells constructed from a five-turn spiral embedded on an FR-4 substrate. External capacitors with value 40 pF or 50 were added to control resonant frequency each cell accordance waveguide configurations. characteristics structures, such as negative permeability, current ratio, transmission response,...
In this paper, we present a flexible magnetic metamaterial structure for enhancing the efficiency of wireless power transfer (WPT) systems operating at 13.56 MHz. The metasurface between transmitter (Tx) and receiver (Rx) coils WPT system is constructed 3 × 5 unit cell array with total size 150 300 mm2. Most structures integrated into are in planar configurations rigid substrate, which limits practical applications. proposed fabricated on an FR-4 substrate thin thickness 0.2 mm; therefore,...
Multi-band metamaterial absorbers have been of great interest owing to their potentials for a wide range communicating, sensing, imaging, and energy harvesting applications. In this work, we experimentally investigate four-band absorber operating at THz frequencies. The metamaterials are fabricated using the maskless UV photolithography e-beam evaporation techniques. absorption spectra proposed measured micro-Fourier transformed infrared spectroscopy. It was demonstrated that multi-band...