Absorption-Dominant Electromagnetic Interference Shielding of Ti<sub>3</sub>C<sub>2</sub>T<sub>x</sub> MXene-Coated and Fe<sub>3</sub>O<sub>4</sub>-Integrated TPMS Composites with Coupled Gradient Conductivity and Size-Graded Structure. [PDF]
Adv Sci (Weinh)Kamal A +7 more
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Electrical Impedance Matching Between Piezoelectric Transducer and Power Amplifier
IEEE Sensors Journal, 2020 Electrical impedance matching network (EIMN) is important for the piezoelectric transducer to transmit high-power acoustic signal over a wide bandwidth. Different from the impedance matching between transducers and interface devices with a fixed impedance of $50\Omega $ , this paper presents a novel method of designing an EIMN between transducer ...
Hanyun Zhou
exaly +3 more sources
Optimized Transmission Electrical Broadband Impedance Matching for PolyCMUT
2022 IEEE International Ultrasonics Symposium (IUS), 2022 Ziqiang Chen +2 more
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Broadband electrical impedance matching for piezoelectric ultrasound transducers
IEEE Transactions on Ultrasonics, Ferroelectrics, and Frequency Control, 2011This paper presents a systematic method for designing broadband electrical impedance matching networks for piezoelectric ultrasound transducers. The design process involves three steps: 1) determine the equivalent circuit of the unmatched piezoelectric transducer based on its measured admittance; 2) design a set of impedance matching networks using a ...
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Qingping Wang, Jin An Sam Oh, Tian Wu
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IEICE Transactions on Electronics, 2005 In order to reduce the size of a wireless system, we propose a design theory for the broadband impedance matching circuit which connects an electrically small antenna (ESA) to a semiconductor amplifier. We confirmed its validity for the case of connection between a small slot loop antenna with a small radiation resistance of R a = 0.776 Ω and a ...
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Electrical Impedance Matching of PVDF Ultrasonic Transducers
, 2004 One 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
Pedro Acevedo
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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, 2012 Wireless 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.
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Non-Foster impedance matching of an electrically small loop antenna for biomedical telemetry
2017 IEEE Asia Pacific Microwave Conference (APMC), 2017 The demand for miniaturized antennas in biomedical telemetry has been steadily increasing. In biomedical telemetry, electrically small antennas are integrated into exterior portable devices owing to their size in respect of the wavelength to process the received sensing information and power battery-less implantable medical devices (IMDs).
Mohamed Manoufali, Amin Abbosh
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