Results 201 to 210 of about 984 (239)

Real-time vectorcardiography simulator system. [PDF]

open access: yesPLoS One
Rodriguez WR   +2 more
europepmc   +1 more source

On the Crack Characteristic Signal From an Open-Ended Coaxial Probe

IEEE Transactions on Instrumentation and Measurement, 2014
Detection of surface-breaking cracks in metals is an important issue in many industries (e.g., transportation, aerospace, nuclear). Commonly, eddy current and ultrasonic techniques are used for this purpose. In recent years, a significant amount of work has also been conducted using microwave methods.
Kristen Donnell, Reza Zoughi
exaly   +3 more sources

Measurement of membrane conductivities using an open-ended coaxial probe

Journal of Electroanalytical Chemistry, 1995
In this article, we describe the use of an open-ended coaxial probe to measure the conductivity of an ionic membrane. The technique is simple and it allows measurements to be made quickly. Control of physical parameters, such as the water content of the membrane, is easily achieved as access is only required to one side of the membrane.
C L Gardner
exaly   +2 more sources

Permittivity measurements using a short open-ended coaxial line probe

IEEE Microwave and Guided Wave Letters, 1991
Improvements for permittivity measurements with short, open-ended coaxial line probes are achieved by using a more accurate formulation and by adding a finite conductor flange at the aperture of the probe. A conductor flange with a diameter of about 10 times the outer diameter of the coaxial line greatly improves the performance of the coaxial line ...
C E Smith
exaly   +2 more sources

Dielectric measurements with an open-ended coaxial probe

IEE Proceedings H: Microwaves, Antennas and Propagation, 1987
T.P. Marsland, S. Evans
exaly   +2 more sources

Detection of Diseased Tissues with Open-Ended Coaxial Probes

2021 XXXIVth General Assembly and Scientific Symposium of the International Union of Radio Science (URSI GASS), 2021
This work presents analysis of open-ended coaxial probes having four different aperture sizes. The probes are simulated in CST. S-parameters collected from simulations and the dielectric properties of the material under test is retrieved with an in-house algorithm. The probes are fabricated and the measurements are performed with the known materials to
Cemanur Aydinalp, Tuba Yilmaz
openaire   +1 more source

On the Dielectric Measurement of Thin Layers Using Open-Ended Coaxial Probes

IEEE Transactions on Instrumentation and Measurement, 2021
Using an open-ended coaxial probe and a vector network analyzer (VNA) is a conventional technique for the noninvasive and broadband measurement of dielectric permittivity. The method is widely applied to characterize bulk material and liquids and has recently been extended to thin sheet material samples. However, it is commonly believed that the method
Arya Fallahi   +2 more
openaire   +2 more sources

Bilayered dielectric measurement with an open-ended coaxial probe

IEEE Transactions on Microwave Theory and Techniques, 1994
An equivalent circuit of an open-ended coaxial line used as a probe for bilayered dielectric measurement which consists of three parallel capacitances C/sub f/, C/sub 0//spl epsiv//sub 1/ and C/sub 1/(/spl epsiv//sub 2//spl Gt/-/spl epsiv//sub 1/) is presented.
G. Chen, null Kang Li, null Zhong Ji
openaire   +1 more source

Dimensional analysis of an open-ended coaxial-line probe

IMTC 2001. Proceedings of the 18th IEEE Instrumentation and Measurement Technology Conference. Rediscovering Measurement in the Age of Informatics (Cat. No.01CH 37188), 2002
Open-ended coaxial-line probes provide a convenient means of determining the dielectric properties of many materials over a relativity wide frequency range. Because of this, much attention has been given to understanding the interaction of the probe and the material it is inserted into.
P.G. Bartley   +2 more
openaire   +1 more source

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