Results 271 to 280 of about 139,401 (323)
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Applied Energy, 2020
Abstract Based on the definition of numerical-type equivalent thermoelectric parameters through developing a 1D self-consistent numerical method, this paper established a novel coupled electrical-thermal impedance matching (CETIM) model for prediction of the maximum output power and the highest conversion efficiency of thermoelectric generator (TEG).
Zhi-Zhu He
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Abstract Based on the definition of numerical-type equivalent thermoelectric parameters through developing a 1D self-consistent numerical method, this paper established a novel coupled electrical-thermal impedance matching (CETIM) model for prediction of the maximum output power and the highest conversion efficiency of thermoelectric generator (TEG).
Zhi-Zhu He
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Optimized Transmission Electrical Broadband Impedance Matching for PolyCMUT
2022 IEEE International Ultrasonics Symposium (IUS), 2022Electrical impedance matching in CMUTs requires a trade-off between bandwidth and achievable acoustic power. A solely power-optimized electro-mechanical coupling leads to long ringing and poor image quality. Our approach uses the Chebyshev filter network
CARLOS D Gerardo +2 more
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Wireless Excitation and Electrical Impedance Matching of Piezoelectric Wafer Active Sensors
Volume 2: Mechanics and Behavior of Active Materials; Integrated System Design and Implementation; Bio-Inspired Materials and Systems; Energy Harvesting, 2012Wireless ultrasound inspections using Piezoelectric Wafer Active Sensors (PWAS) are attractive for Structural Health Monitoring (SHM). However, the impedance mismatch between the PWAS and the wireless transponder reduces the wirelessly transmitted signal strength.
Rashed Hossain Bhuiyan +2 more
openaire +2 more sources
Electronics (Switzerland), 2022 In our prior study, a systematic approach was used to devise Langevin transducers for high-power applications where the energy efficiency was not considered in the design criteria.
Jungwoo Lee, Jinhyuk Kim, Lee Jungwoo
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Measurement: Journal of the International Measurement Confederation, 2023
Wenchang Huang +2 more
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Wenchang Huang +2 more
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Electrical Impedance Matching of PVDF Ultrasonic Transducers
2004One of the objectives of this work is to improve PVDF ultrasonic transducers characteristics by electrical means. It is feasible to enhance the frequency bandshape and the overall power transfer efficiency in high-Q acousto-electric resonators by balancing the source impedance with the transducer electrical impedance using some form of lumped component
P. Acevedo-Contla
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IEEE Sensors Journal, 2022
An electrical impedance-matching network (EIMN) is proposed to achieve a broad transmitter transducer bandwidth for the acoustic logging while drilling tool.
Yang Gou, Xin Fu
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An electrical impedance-matching network (EIMN) is proposed to achieve a broad transmitter transducer bandwidth for the acoustic logging while drilling tool.
Yang Gou, Xin Fu
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Ultrasonics, 2021
A high sensitivity air-coupled transducer with a hollow polymer microsphere filled epoxy resin matching layer is investigated. A new closed-cell porous material is introduced and a new acoustic impedance matching solution is discussed.
Qiao Wu, Xiaochun Song, Xu Zhang
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A high sensitivity air-coupled transducer with a hollow polymer microsphere filled epoxy resin matching layer is investigated. A new closed-cell porous material is introduced and a new acoustic impedance matching solution is discussed.
Qiao Wu, Xiaochun Song, Xu Zhang
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A Tunable Electrical Impedance Matching System for Dual-Frequency Transducers
2024 17th International Congress on Image and Signal Processing, BioMedical Engineering and Informatics (CISP-BMEI)Zhitian Shen, Weiwei Shao, Yaoyao Cui
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