Results 301 to 310 of about 799,107 (315)

A Wideband Circularly Polarized Antenna With High Impulse Signal Fidelity for IR-UWB Positioning Applications

IEEE Transactions on Circuits and Systems - II - Express Briefs
A wideband circularly polarized (CP) antenna with conical-beam radiation is designed by a circular monopolar patch antenna (CMPA) with a tapered feeding, eight shorting pins, and eight sickle-shaped branches in the ground plane.
Wei Yang, Chaogui Huang, Xiaozhang Zhu, Wei Huang, Liming Xu   +4 more
semanticscholar   +1 more source

Study on Power Frequency Impedance and Impulse Impedance Characteristics of Grounding Grid Based on CDEGS

2023
Li Tang, Baoming Huang, Hai Jiang, Jiahao Huang, Liangshou Hao, Yinwu Xiong, Zexin Yan, Jiangtao Li   +7 more
openaire   +1 more source

A High-Impedance, Nanosecond Rise Time Probe for Measuring High-Voltage Impulses

IEEE Transactions on Power Apparatus and Systems, 1968
Normal voltage dividers for high-voltage impulses are connected to the test object by an open air line which, when considered as part of the measuring system, gives an initially low input impedance to that measuring system due to the characteristic impedance of the line.
openaire   +2 more sources

Measurement of respiratory impedance by impulse oscillometry--effects of endotracheal tubes.

Research in experimental medicine. Zeitschrift fur die gesamte experimentelle Medizin einschliesslich experimenteller Chirurgie, 2001
Impulse Oscillometry is a new, noninvasive method to measure respiratory impedance, i.e. airway resistance and reactance at different oscillation frequencies. These parameters are potentially useful for the monitoring of respiratory mechanics in the critically ill patent with respiratory dysfunction.
G E, Kuhnle, T, Brandt, U, Roth, A E, Goetz, H J, Smith, K, Peter   +5 more
openaire   +1 more source

Impulse impedance of the horizontal grounding electrode: Experimental analysis versus full-wave computational model

International Conference on Software, Telecommunications and Computer Networks, 2016
T. Garma, S. Šesnić, D. Poljak, Mislav Blajic   +3 more
semanticscholar   +1 more source

Lightning Impulse Impedance and Surface Potential Distribution of 10 kV Distribution Line Tower: Field Test and Simulation

IEEE Transactions on Power Delivery, 2022
Jian Xue, Huan Huang
exaly  

The optimization analysis of impulse injection method for impedance measurement in three-phase power electronic systems

2017 IEEE 3rd International Future Energy Electronics Conference and ECCE Asia (IFEEC 2017 - ECCE Asia), 2017
Zipeng Liu, Jinjun Liu, Zeng Liu, Teng Liu, Yiming Tu   +4 more
semanticscholar   +1 more source

Watermelon Maturity Determination in the Field Using Acoustic Impulse Impedance Techniques

, 1996
M. Stone, P. Armstrong, X. Zhang, G. Brusewitz, D. Chen   +4 more
semanticscholar   +1 more source

Measurement and Characterization of Acoustic Impedance by the Impulse Response of Harmonic Oscillators

10th AIAA/CEAS Aeroacoustics Conference, 2004
K.-Y. Fung, Xiaodong Jing
openaire   +1 more source

Correlation between laboratory and field tests on the impulse impedance of rod-type ground electrodes

, 2003
Y. Chen, P. Chowdhuri
semanticscholar   +1 more source