Results 31 to 40 of about 139,401 (323)
ACS Applied Energy Materials, 2019 Maximizing the power outputs of devices using benchmark materials is critical for the application of organic thermoelectrics. We report the fabrication of thermoelectric devices using poly(3,4-ethylenedioxythiophene)/poly(styrenesulfonate) with a Ni foil
M. Mukaida, K. Kirihara, Qingshuo Wei
semanticscholar +1 more source
The Systematic Design of Noncommensurate Impedance Matching Tapers for Ultrawideband Gradient-Index Lens Antennas [PDF]
IEEE Transactions on Antennas and Propagation, 2021 We propose a general method for designing wideband matching tapers in inhomogeneous media where phase velocity is coupled to the taper impedance profile. Such tapers are used to match wideband gradient index (GRIN) lens antennas. To simplify, fabrication
Wei Wang, Nicolas C. Garcia, J. Chisum
semanticscholar +1 more source
Impedance Matching-Based Power Flow Analysis for UPQC in Three-Phase Four-Wire Systems
, 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.
Xiaohuan Wang +5 more
core +1 more source
Study on frequency tracking method of ultrasonic scalpel based on impedance matching
Dianzi Jishu Yingyong, 2019 With the development of science and technology, ultrasonic scalpel is widely used in medical treatment. In practical application, in order to make the transducer of the ultrasonic scalpel convert electrical energy into mechanical energy as much as ...
Yang Lin +5 more
doaj +1 more source
Optimum values of electrical circuit for energy harvesting using a beam and piezoelectric elements
Mechanical Engineering Journal, 2017 This paper describes optimum values of an electrical circuit for energy harvesting using a beam and piezoelectric elements. Energy harvesting techniques recover energy from the environment. We target the energy harvesting methods that extract energy from
Keisuke YAMADA +3 more
doaj +1 more source
Critical Care, 2020 Background High positive end-expiratory pressures (PEEP) may induce overdistension/recruitment and affect ventilation–perfusion matching (VQMatch) in mechanically ventilated patients.
Huaiwu He +7 more
semanticscholar +1 more source
Impedance Matching Network Based on Metasurfaces (2-D Metamaterials) for Electrically Small Antennas [PDF]
2020 IEEE International Symposium on Antennas and Propagation and North American Radio Science Meeting, 2020 The paper shows the gain-bandwidth limitations of traditional discrete component matching used in electrically small antennas can be overcome by implementing the impedance matching network with metasurface. The proposed metasurface can optimize maximum power transfer to electrically small antennas and achieve superior broadband performance.
Alibakhshikenari, Mohammad +5 more
openaire +2 more sources
Tunable Matching Networks Based on Phase-Switched Impedance Modulation1
, 2021 The ability to provide accurate, rapid, and dynamically controlled impedance matching offers significant advantages to a wide range of present and emerging radio-frequency (RF) power applications.
Perreault, David J. +2 more
core +1 more source
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
High-Power Wire Bonded GaN Rectifier for Wireless Power Transmission
IEEE Access, 2020 A novel wire bonded GaN rectifier for high-power wireless power transfer (WPT) applications is proposed. The low breakdown voltage in silicon Schottky diodes limits the high-power operations of microwave rectifier.
Sumin David Joseph +5 more
doaj +1 more source