Results 1 to 10 of about 2,185 (217)
High-Input Impedance Voltage-Mode Multifunction Filter
Applied Sciences, 2021 This paper proposes a high-input impedance voltage-mode (VM) multifunction biquad filter which employs three current-feedback amplifiers (CFAs), three resistors, and two grounded capacitors.
San-Fu Wang +3 more
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Input Impedance of the Systemic Circulation [PDF]
Circulation Research, 1967 The hydraulic load presented to the left ventricle by the systemic circulation was characterized by expressing pressure-flow relationships in the ascending aorta as input impedance. This was determined by spectral or Fourier analysis of simultaneously recorded pressure and flow waves in 1 unanesthetized and 27 anesthetized dogs.
M F, O'Rourke, M G, Taylor
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A folded monopole antenna with variable input impedance by connecting additional elements
IET Microwaves, Antennas & Propagation, 2021 A folded monopole antenna (FMA) with two different input impedances were investigated to develop an antenna that is robust to metal for applications in a space enclosed by metal objects.
Yuta Nakagawa +3 more
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IEEE Access, 2020 In integrated circuit form, the front-end amplifier (FEA) determines the fidelity of the biosignal detection, signal-to-noise ratio, power consumption and detector size for the future multi-channel neural signal recording systems and applications ...
Zhijun Zhou
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Method of determination of the railway rolling stock coordinates within the track circuit
Transport Technologies, 2023 This work aims to solve one of the essential problems in railway transport – control over the position of moving units within the race. A method of constant monitoring of the track circuit with a determination of the coordinate of the train shunt ...
Oleh Voznyak, Serhii Buriak
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Preparation and electromagnetic absorbing properties of TiC/Ni powders
Xi'an Gongcheng Daxue xuebao, 2022 In order to improve the microwave absorption performance of TiC powder, TiC/Ni composite powder was prepared by coating nickel particles with mass fraction of 10%, 20% and 30% on the surface of TiC by typical coarsening and sensitizing electroless nickel
ZHANG Sen +4 more
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Sensors, 2023 To improve the accuracy of shallow neural networks in processing complex signals and cable fault diagnosis, and to overcome the shortage of manual dependency and cable fault feature extraction, a deep learning method is introduced, and a time−frequency ...
Qingzhu Wan +4 more
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Applied Sciences, 2019 This paper proposes a new high-input impedance current feedback operational amplifier (CFOA)- based voltage-mode multifunction biquadratic filter and a voltage-mode quadrature oscillator using the proposed high-input impedance CFOA-based biquadratic ...
San-Fu Wang +3 more
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Peak-picking identification technique for modal expansion of input impedance of brass instruments
Acta Acustica, 2021 The paper presents a method to obtain the modal expansion of the measured input impedance of a brass instrument. The method operates as a peak-picking procedure, which makes it particularly intuitive for users who are not experts in modal analysis.
Ablitzer Frédéric
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IEEE Access, 2023 A large number of health and wellness applications wish to monitor electrocardiogram signal (ECG) in the least intrusive way possible. The use of dry textile electrodes with high input impedance bio-amplifiers is a common technique. This paper presents a
Robert Camos-Vidal, Javier Rosell-Ferrer
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