Results 11 to 20 of about 1,267,292 (315)
Ultra-Broadband Sound Absorbing Materials Based on Periodic Gradient Impedance Matching
Frontiers in Materials, 2022 Ultra-broadband sound absorption with periodic gradient impedance matching is of great concern in the research of acoustic materials. This study investigates the impedance matching of composite acoustic metamaterials comprising micro-perforated plates ...
Fei Wu +7 more
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Transmission Lines-Based Impedance Matching Technique for Broadband Rectifier
IEEE Access, 2021 A high-efficiency compact broadband rectifier is developed for wireless energy harvesting. A novel three-stage impedance matching technique is utilized in a broadband rectifier design to achieve high conversion efficiency with a compact size.
Sumin David Joseph +2 more
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Nano Reseach, 2023 Ti_3C_2T_ x nanosheets have attracted significant attention for their potential in electromagnetic wave absorption (EWA). However, their inherent self-stacking and exorbitant electrical conductivity inevitably lead to serious impedance mismatch ...
Huanhuan Niu +8 more
semanticscholar +1 more source
Bioinspired metagel with broadband tunable impedance matching. [PDF]
Sci Adv, 2020 A bioinspired metagel achieves broadband tunable acoustic impedance matching. To maximize energy transmission from a source through a media, the concept of impedance matching has been established in electrical, acoustic, and optical engineering. However,
Dong E +6 more
europepmc +2 more sources
High Quality Factor, High Sensitivity Metamaterial Graphene-Perfect Absorber Based on Critical Coupling Theory and Impedance Matching. [PDF]
Nanomaterials (Basel), 2020 By means of critical coupling and impedance matching theory, we have numerically simulated the perfect absorption of monolayer graphene. Through the critical coupling effect and impedance matching, we studied a perfect single-band absorption of the ...
Cen C +8 more
europepmc +2 more sources
Energies, 2022 Circuit theory and nonlinear dynamics are instrumental to design efficient energy harvesters for ambient mechanical vibrations. In this work, we show that an impedance matching networks can be designed that maximizes the harvested power, and improves the
M. Bonnin, F. Traversa, F. Bonani
semanticscholar +1 more source
Improved adaptive impedance matching for RF front-end systems of wireless transceivers. [PDF]
Sci Rep, 2020 In this paper an automatic adaptive antenna impedance tuning algorithm is presented that is based on quantum inspired genetic optimization technique. The proposed automatic quantum genetic algorithm (AQGA) is used to find the optimum solution for a low ...
Alibakhshikenari M +6 more
europepmc +2 more sources
IEEE Transactions on Antennas and Propagation, 2021 A method for designing and fabricating a dual-section step-impedance frequency selective surface (DSSI-FSS) absorber for oblique incidence applications is proposed.
Fan He +7 more
semanticscholar +1 more source
Energies, 2022 Small-scale uncontrolled passive wind generator systems are an attractive solution for rural energy generation because of the system’s reliability and low cost.
Casper J. J. Labuschagne +1 more
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Direct Matching Antennas in RF Energy Harvesting Systems: A Review
Majlesi Journal of Electrical Engineering, 2022 A historical review of Radio Frequency Energy Harvesting (RFEH) Rectenna (Rectifier Antenna) Systems without a matching network is performed, with emphasis on the antenna part.
Vahid Honarvar, Farzad Mohajeri
doaj +1 more source