Results 21 to 30 of about 28,579 (259)
Gong-kuang zidonghua, 2019 In view of the problem that the input impedance does not match the RF internal resistance and the output power decreases due to the change of transmission distance or load in magnetic resonant coupling wireless power transmission system, an impedance ...
YUAN Shiqiang +4 more
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IEEE Access, 2022 Piezoelectric transducer is a key component of acoustic well-logging tool. Transducers used in acoustic well-logging tools usually have limited bandwidth, and their dominant frequencies severely drift with drastic change of borehole temperature when ...
Yongchao Yao +3 more
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High-efficiency microwave heating method based on impedance matching technology
AIP Advances, 2019 In a microwave heating process, part of microwave power may be reflected on the air-heating sample interface due to the impedance mismatching, caused by the relative dielectric permittivity difference between the air and the heating sample.
Qiang Chen +4 more
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The Journal of Engineering, 2015 A novel compact rat-race ring coupler with meander high-impedance transmission line and port impedance matching is presented in this Letter. First, a ring coupler with high port impedance is designed using meander lines.
Jun He, Bing-Zhong Wang
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An Impedance Matching Method Based on Optimized BP Neural Network for Vehicular Power Line System
IEEE AccessDuring the operation of the vehicular power line system, the loads are randomly connected and subsequently disconnected. This can result in an impedance mismatch of the vehicular power line system, which in turn has a significant impact on the normal ...
Renfa Song, Hanyan Li, Yongtao Li
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Adaptive Antenna Impedance Matching Using Low-Complexity Shallow Learning Model
IEEE Access, 2023 In this paper, an automatic antenna impedance matching technique is presented for a wide range of frequency bands where a low-complexity shallow learning model adaptively determines the component values of the matching circuit on a real-time. In general,
Mohammad Mahmudul Hasan +1 more
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Impedance Matching Network [PDF]
, 2022 In this article, four different matching network will be introduce and their value in network will be given by hand calculating and computer analysis. In the first matching network we just use inductor. In the second matching network, we just use a simple LC matching network with up-converting to match a 1Ω to 50Ω.
openaire +1 more source
A Frequency-Tracking and Impedance-Matching Combined System for Robust Wireless Power Transfer
International Journal of Antennas and Propagation, 2017 One of the greatest challenges to power embedded devices using magnetically coupled resonant wireless power transfer (WPT) system is that the amount of power delivered to the load is very sensitive to load impedance variations.
Yanting Luo +3 more
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Wideband strip antenna surrounding a ground plate
The Journal of Engineering, 2022 A wideband planar antenna, which is composed of a ground plate and a strip surrounding the plate, is proposed. Wideband impedance matching with fractional bandwidth over 130% is achieved by making the distance between the strip and the ground plate ...
Kyoichi Iigusa +3 more
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FEBS Letters, EarlyView.We identified a systemic, progressive loss of protein S‐glutathionylation—detected by nonreducing western blotting—alongside dysregulation of glutathione‐cycle enzymes in both neuronal and peripheral tissues of Taiwanese SMA mice. These alterations were partially rescued by SMN antisense oligonucleotide therapy, revealing persistent redox imbalance as ...
Sofia Vrettou, Brunhilde Wirth
wiley +1 more source