Results 21 to 30 of about 1,267,292 (315)
Tapered transmission line technique based graded matching layers for thickness mode piezoelectric transducers [PDF]
, 2009 Conventionally, in order to acoustically match thickness mode piezoelectric transducers to a low acoustic impedance load medium, multiple quarter wavelength (QW) matching layers are employed at the front face of the device.
Hayward, Gordon +6 more
core +1 more source
Impedance-Matched Microwave Lens [PDF]
IEEE Antennas and Wireless Propagation Letters, 2008 11 pages, 8 ...
Alitalo, Pekka +3 more
openaire +2 more sources
Effect of frequency modulation on impedance matching of single ferrite in ICRH antenna system
He jishu, 2022 BackgroundIon cyclotron resonance heating (ICRH) is an important auxiliary heating method in tokamak. When fast plasma phenomena such as L-H mode transitions and edge localized modes (ELM), etc., happens, a large change in the antenna coupling impedance ...
YANG Kaijian +6 more
doaj +1 more source
Analysis of reflection of signal integrity of transmission line
Gong-kuang zidonghua, 2014 In view of problem of signal integrity of transmission line in high-speed circuit system, the paper gave reasons of reflection phenomenon produced in signal transmission through analysis for equivalent circuit of transmission line on PCB of high-speed ...
CHEN Li
doaj +1 more source
Impedance matching in an elastic actuator [PDF]
Soft Matter, 2021 We consider energy transfer from an elastic actuator to an elastic load, and show that the energy transfer can be optimized by tuning Young's modulus of the impedance matching host material.
Tianyi Guo +2 more
openaire +4 more sources
Adaptive impedance matching method based on magnetic resonance wireless energy transmission
Dianzi Jishu Yingyong, 2018 In order to solve the problem of low efficiency and transmission distance of multi-to-1(multi transmit(TX) coils to one receive(RX) coil)coupled magnetic resonance(CMR) wireless power transmission system, this paper presents 2-to-1(two TX Coils to one RX
Xiong Wei, Liu Xiaojing
doaj +1 more source
Impedance Matching-Based Power Flow Analysis for UPQC in Three-Phase Four-Wire Systems
Energies, 2021 Different from the extant power flow analysis methods, this paper discusses the power flows for the unified power quality conditioner (UPQC) in three-phase four-wire systems from the point of view of impedance matching.
Xiaojun Zhao +5 more
doaj +1 more source
Electronics, 2021 This paper points out the viability of the utilization of metamaterial transmission lines as a multifrequency impedance matching network, improving RF-Energy Harvesting systems operating around 2.4 GHz and 5 GHz. Metamaterial transmission lines introduce
E. Coskuner, J. García-García
semanticscholar +1 more source
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
doaj +1 more source
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
doaj +1 more source