Results 251 to 260 of about 1,267,292 (315)
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Tunable Impedance-Matching Filters
IEEE Microwave and Wireless Components Letters, 2021In this letter, we present a general design method for tunable matching networks that have a prescribed filter characteristic over a range of complex port impedances.
J. Estrada +3 more
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IEEE Journal of Emerging and Selected Topics in Industrial Electronics, 2022
This article proposes a new design method of impedance matching networks for wireless power transfer (WPT) systems. In WPT systems, the input impedance of resonator varies over a wide range rather than having a fixed value due to coupling variation.
Euihoon Chung +3 more
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This article proposes a new design method of impedance matching networks for wireless power transfer (WPT) systems. In WPT systems, the input impedance of resonator varies over a wide range rather than having a fixed value due to coupling variation.
Euihoon Chung +3 more
semanticscholar +1 more source
Applied Physics Letters
This paper proposes a hybrid microwave power receiving (MPR) metasurface array with efficient dual matching of surface impedance and phase gradient. The hybrid array comprises three components: a reflective phase gradient metasurface (R-PGM) array, a ...
Han Xiong +5 more
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This paper proposes a hybrid microwave power receiving (MPR) metasurface array with efficient dual matching of surface impedance and phase gradient. The hybrid array comprises three components: a reflective phase gradient metasurface (R-PGM) array, a ...
Han Xiong +5 more
semanticscholar +1 more source
IEEE Journal of Emerging and Selected Topics in Power Electronics, 2020
Transfer efficiency (TE) is an important research topic in the practical application of a wireless power transfer (WPT) system. WPT system is a loosely coupled system; the coupling coefficient changes drastically due to the relative movement of the ...
Yuanyuan Liu, Hongwei Feng
semanticscholar +1 more source
Transfer efficiency (TE) is an important research topic in the practical application of a wireless power transfer (WPT) system. WPT system is a loosely coupled system; the coupling coefficient changes drastically due to the relative movement of the ...
Yuanyuan Liu, Hongwei Feng
semanticscholar +1 more source
Proceedings of IEEE International Symposium on Circuits and Systems - ISCAS '94, 2002
In many applications, it is desirable to synthesize an adaptive impedance to match some "real world" system, so that when the target impedance changes, the matching impedance tracks this change and maintains a close match. In this paper we present a scheme for adaptive impedance matching formulated in the Model Reference Adaptive Systems' Control (MRAS)
A.S. Munshi, D.A. Johns, A.S. Sedra
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In many applications, it is desirable to synthesize an adaptive impedance to match some "real world" system, so that when the target impedance changes, the matching impedance tracks this change and maintains a close match. In this paper we present a scheme for adaptive impedance matching formulated in the Model Reference Adaptive Systems' Control (MRAS)
A.S. Munshi, D.A. Johns, A.S. Sedra
openaire +1 more source
Solid State Phenomena, 2013
Electrically small antenna suffer from the high Q impedance such as narrow bandwidth and poor gain. To improve them, passive impedance matching is often used but it is restricted to a Bode-Fano limit. To skip it, active matching incorporating non-Foster circuits can provide a good solution.
Katarzyna Jagodzińska +2 more
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Electrically small antenna suffer from the high Q impedance such as narrow bandwidth and poor gain. To improve them, passive impedance matching is often used but it is restricted to a Bode-Fano limit. To skip it, active matching incorporating non-Foster circuits can provide a good solution.
Katarzyna Jagodzińska +2 more
openaire +1 more source
ACS Applied Materials and Interfaces, 2020
Ordered mesoporous carbon (OMC) is considered to be a prospective carbon-based material for microwave absorption (MA) because of its abundant well-ordered mesoporous structures, high specific surface area, numerous active sites, and facile preparation ...
Panpan Zhou +11 more
semanticscholar +1 more source
Ordered mesoporous carbon (OMC) is considered to be a prospective carbon-based material for microwave absorption (MA) because of its abundant well-ordered mesoporous structures, high specific surface area, numerous active sites, and facile preparation ...
Panpan Zhou +11 more
semanticscholar +1 more source
IEEE Transactions on Antennas and Propagation, 2020
A wideband air-filled plate array antenna with multistage impedance matching operated in $D$ -band is proposed in this article. To achieve the wide bandwidth, three stages of impedance matching are introduced in the $2\times 2$ subarray, including the
S. Yao +4 more
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A wideband air-filled plate array antenna with multistage impedance matching operated in $D$ -band is proposed in this article. To achieve the wide bandwidth, three stages of impedance matching are introduced in the $2\times 2$ subarray, including the
S. Yao +4 more
semanticscholar +1 more source
Automatic Impedance Matching Method With Adaptive Network Based Fuzzy Inference System for WPT
IEEE Transactions on Industrial Informatics, 2020In a wireless power transfer system via coupled magnetic resonance, the power transfer efficiency (PTE) drastically decreases with the transfer distance and the changing load.
Y. Li +5 more
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Circularly Polarized Implantable Antenna With Improved Impedance Matching
IEEE Antennas and Wireless Propagation Letters, 2020This letter proposes a circularly polarized patch antenna with a compact volume of 91.9 mm3 for implantable applications. Foremost, the input impedance of patch antenna with reduced ground inside lossy muscle tissue is analyzed.
Li‐jie Xu +4 more
semanticscholar +1 more source