Comparison of Impedance Measurement Techniques for Extracting Parasitic Inductance of SiC MOSFETs

2018 ◽  
Author(s):  
Tianjiao Liu ◽  
Yanjun Feng ◽  
Yuanfeng Zhou ◽  
Runtao Ning ◽  
Thomas T.Y. Wong ◽  
...  
Keyword(s):  
Measurement Techniques ◽  
Impedance Measurement ◽  
Parasitic Inductance

scholarly journals An Overview of Acoustic Impedance Measurement Techniques and Future Prospects

Metrology ◽  
2021 ◽  
Vol 1 (1) ◽  
pp. 17-38
Author(s):  
Nandeesh Hiremath ◽  
Vaibhav Kumar ◽  
Nicholas Motahari ◽  
Dhwanil Shukla
Keyword(s):  
Acoustic Impedance ◽  
Sound Pressure ◽  
Acoustic Pressure ◽  
Measurement Techniques ◽  
Impedance Measurement ◽  
Acoustic Medium ◽  
Future Prospects ◽  
Reverberation Chamber ◽  
Field Techniques ◽  
Acoustic Phenomenon

In order to progress in the area of aeroacoustics, experimental measurements are necessary. Not only are they required for engineering applications in acoustics and noise engineering, but also they are necessary for developing models of acoustic phenomenon around us. One measurement of particular importance is acoustic impedance. Acoustic Impedance is the measure of opposition of acoustical flow due to the acoustic pressure. It indicates how much sound pressure is generated by the vibration of molecules of a particular acoustic medium at a given frequency and can be a characteristic of the medium.The aim of the present paper is to give a synthetic overview of the literature on impedance measurements and to discuss the advantage and disadvantage of each measurement technique. In this work, we investigate the three main categories of impedance measurement techniques, namely reverberation chamber techniques, impedance tube techniques, and far-field techniques. Theoretical principles for each technique are provided along with a discussion on historical development and recent advancements for each technique.

Simulation and analysis of acoustic impedance measurement techniques for marine sediments using sonar

2014 ◽  
Vol 135 (4) ◽  
pp. 2302-2302
Author(s):  
João P. Ristow ◽  
Guillaume Barrault ◽  
Julio A. Cordioli ◽  
Gregório G. Azevedo ◽  
Antônio H. Klein ◽  
...  
Keyword(s):  
Marine Sediments ◽  
Acoustic Impedance ◽  
Measurement Techniques ◽  
Impedance Measurement

Impedance measurement techniques for one-port and two-port networks

2015 ◽  
Vol 138 (4) ◽  
pp. 2279-2290 ◽  
Author(s):  
Mingsian R. Bai ◽  
Yi-Yang Lo ◽  
You Siang Chen
Keyword(s):  
Measurement Techniques ◽  
Impedance Measurement

scholarly journals Magnetic Induction Spectroscopy for Biomass Measurement: A Feasibility Study

Sensors ◽  
2019 ◽  
Vol 19 (12) ◽  
pp. 2765 ◽  
Author(s):  
Ziyi Zhang ◽  
Mohammed Roula ◽  
Richard Dinsdale
Keyword(s):  
Magnetic Induction ◽  
Cell Biology ◽  
Measurement Techniques ◽  
Impedance Measurement ◽  
Simulation Software ◽  
Dispersion Property ◽  
Small Range ◽  
Experimental Measurements ◽  
South Wales ◽  
Saline Solutions

Background: Biomass measurement and monitoring is a challenge in a number of biotechnology processes where fast, inexpensive, and non-contact measurement techniques would be of great benefit. Magnetic induction spectroscopy (MIS) is a novel non-destructive and contactless impedance measurement technique with many potential industrial and biomedical applications. The aim of this paper is to use computer modeling and experimental measurements to prove the suitability of the MIS system developed at the University of South Wales for controlled biomass measurements. Methods: The paper reports experimental measurements conducted on saline solutions and yeast suspensions at different concentrations to test the detection performance of the MIS system. The commercial electromagnetic simulation software CST was used to simulate the measurement outcomes with saline solutions and compare them with those of the actual measurements. We adopted two different ways for yeast suspension preparation to assess the system’s sensitivity and accuracy. Results: For saline solutions, the simulation results agree well with the measurement results, and the MIS system was able to distinguish saline solutions at different concentrations even in the small range of 0–1.6 g/L. For yeast suspensions, regardless of the preparation method, the MIS system can reliably distinguish yeast suspensions with lower concentrations 0–20 g/L. The conductivity spectrum of yeast suspensions present excellent separability between different concentrations and dielectric dispersion property at concentrations higher than 100 g/L. Conclusions: The South Wales MIS system can achieve controlled yeast measurements with high sensitivity and stability, and it shows promising potential applications, with further development, for cell biology research where contactless monitoring of cellular density is of relevance.

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