Results 281 to 290 of about 6,921,664 (320)

Low-pass impedance transformation networks

IEE Proceedings - Circuits, Devices and Systems, 1997
Explicit formulas for the element values of a low-pass impedance transformation network having Butterworth or Chebyshev responses are given. For the second and the fourth-order networks, element values and transformation frequency band are directly determined by the impedance ratios.
Y.-S. Zhu, W.-K. Chen
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Impedance matching networks

2019
This chapter discusses mainly impedance matching circuits that are used to match two different terminations. Among the several impedance matching techniques, the available implementation technology is what usually determines the possible matching technique that can be used.
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Digital calculation of network impedances

Electrical Engineering, 1956
THE OPERATION of an electrical network may be defined by means of driving-point and transfer impedances. According to the American Standard Definitions of Electrical Terms, the driving-point impedance at any pair of terminals of a network is the ratio of an applied potential difference to the resultant current at these terminals, all terminals being ...
A. F. Glimn, J. M. Henderson, R. Habermann, L. K. Kirchmayer   +3 more
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Electrical Impedance Cardiography Using Artificial Neural Networks

Annals of Biomedical Engineering, 1998
This study evaluates the use of artificial neural networks to estimate stroke volume from pre-processed, thoracic impedance plethysmograph signals from 20 healthy subjects. Standard back-propagation was used to train the networks, with Doppler stroke volume estimates as the desired output.
A P, Mulavara, W D, Timmons, M S, Nair, V, Gupta, A A, Kumar, B C, Taylor   +5 more
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Quadratic $\mathrm{\Delta}$-source Impedance Network

2020 11th Power Electronics, Drive Systems, and Technologies Conference (PEDSTC), 2020
This paper proposes a new impedance source network, called quadratic $\Delta$ -source network. The proposed network offers high voltage gain and continuous input current with a considerably low ripple. Also, both average and peak magnetizing currents are lower than that of the conventional $\Delta$ -source network, which lead to a lower core loss and
Hamed Rezazadeh, Mohammad Monfared
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Variability Analysis of T Network Impedance Matching

Applied Mechanics and Materials, 2013
Harmonic rejection ability and reflection coefficient are the most important factors in the design of impedance matching network. However, stability of impedance matching should be taken into account in applications existing load impedance variation and component deviation due to tolerance and process variation. This paper investigates variability of T
Jian Wen Tan, Si Jian Deng, Fang Wei Ye, De Ping Zeng   +3 more
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ANTENNA IMPEDANCE MATCHING WITH NEURAL NETWORKS

International Journal of Neural Systems, 2005
Impedance matching between transmission lines and antennas is an important and fundamental concept in electromagnetic theory. One definition of antenna impedance is the resistance and reactance seen at the antenna terminals or the ratio of electric to magnetic fields at the input.
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Impedance-source network power converters

2022
The research described in this thesis covers the analysis and design of impedance-source networks for a wide range of electric power conversion applications (dc-dc, dc-ac, ac-dc, ac-ac). Variance impedance networks, circuit topologies and modulation techniques were analysed, designed and tested in the laboratory to improve performance (efficiency ...
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Determination of the Impedance Matching Domain of Impedance Matching Networks

IEEE Transactions on Circuits and Systems I: Regular Papers, 2004
This paper investigates the impedance boundary of impedance matching networks analytically, graphically representing the resultant impedance matching domains. A set of explicit equations is derived to allow the rapid development of the impedance boundary of such networks.
M. Thompson, J.K. Fidler
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Distributed Impedance Network (Z-Network) DC–DC Converter

IEEE Transactions on Power Electronics, 2010
This paper presents a novel dc-dc converter incorporating a distributed impedance-source network (Z-source network, or Z-network) to achieve the buck (step-down) and boost (step-up) function of a transformer-isolated dc-dc converter. In this paper, the distributed impedance source network composed of an array of inductors and capacitors is coupled ...
Honnyong Cha, Fang Zheng Peng, Dong-Wook Yoo   +2 more
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