Results 11 to 20 of about 984 (239)

Analysis of an open-ended coaxial probe with lift-off for nondestructive testing [PDF]

IEEE Transactions on Instrumentation and Measurement, 1994
The open-ended coaxial probe with lift-off is studied using a full-wave analysis, and an uncertainty analysis is presented. The field equations for the following terminations are worked out: (1) the sample extends to /spl infin/ in the positive axial direction, (2) the sample is backed by a well-characterized material, and (3) the sample is backed by a
J Baker-Jarvis, R G Geyer
exaly   +2 more sources

Dielectric characterization of vegetation at L band using an open-ended coaxial probe [PDF]

Geoscientific Instrumentation, Methods and Data Systems, 2018
Decoupling the integrated microwave signal originating from soil and vegetation remains a challenge for all microwave remote sensing applications. To improve satellite and airborne microwave data products in forest environments, a precise and reliable
A. Mavrovic, A. Mavrovic, A. Roy, A. Roy, A. Roy, A. Roy, A. Royer, A. Royer, B. Filali, F. Boone, C. Pappas, C. Pappas, O. Sonnentag, O. Sonnentag   +13 more
doaj   +4 more sources

Integrating Complex Permittivity Measurements with Histological Analysis for Advanced Tissue Characterization [PDF]

Sensors
We developed a measurement setup and protocol reliably relating complex permittivity measurements with tissue characterization and specific histological features. We measured 148 fresh human tissue samples across 14 tissue types at 51 frequencies ranging
Sandra Lopez-Prades, Mónica Torrecilla-Vall-llossera, Mercedes Rus, Miriam Cuatrecasas, Joan M. O’Callaghan   +4 more
doaj   +2 more sources

Open-Ended Coaxial Dielectric Probe Effective Penetration Depth Determination [PDF]

IEEE Transactions on Microwave Theory and Techniques, 2016
We have performed a series of experiments which demonstrate the effect of open-ended coaxial diameter on the depth of penetration. We used a two layer configuration of a liquid and movable cylindrical piece of either Teflon or acrylic. The technique accurately demonstrates the depth in a sample for which a given probe diameter provides a reasonable ...
Jan Seppälä, Paul Meaney, Andrew Gregory   +2 more
exaly   +3 more sources

Validation of a Low-Cost Open-Ended Coaxial Probe Setup for Broadband Permittivity Measurements up to 6 GHz [PDF]

Sensors
This work presents the validation of a low-cost measurement system based on an open-ended coaxial SMA (SubMiniature version A) probe for the characterization of complex permittivity in the microwave frequency range.
Julia Arias-Rodríguez, Raúl Moreno-Merín, Andrea Martínez-Lozano, Germán Torregrosa-Penalva, Ernesto Ávila-Navarro   +4 more
doaj   +2 more sources

Comparison of Metal-Backed Free-Space and Open-Ended Coaxial Probe Techniques for the Dielectric Characterization of Aeronautical Composites [PDF]

Sensors, 2016
The trend in the last few decades is that current unmanned aerial vehicles are completely made of composite materials rather than metallic, such as carbon-fiber or fiberglass composites.
Patricia López-Rodríguez, David Escot-Bocanegra, David Poyatos-Martínez, Frank Weinmann   +3 more
doaj   +2 more sources

An optimized sliding rail-assisted micrometer system for sensing volume measurement of open-ended coaxial probes in breast cancer dielectric property analysis [PDF]

Frontiers in Bioengineering and Biotechnology
ObjectiveThe open-ended coaxial probe (OECP) method has demonstrated promising potential in biological tissue measurements. However, it still faces challenges such as significant measurement errors and poor repeatability.
Shuai Chen, Zhongliang Lu, Qiang Huang, Gaowei Zhao, Zheng Sun, Jing Zhou, Yupeng Liao   +6 more
doaj   +2 more sources

Open-Ended Transmission Coaxial Probes for Sarcopenia Assessment [PDF]

Sensors, 2022
We developed a handheld, side-by-side transmission-based probe for interrogating tissue to diagnose sarcopenia—a condition largely characterized by muscle loss and replacement by fat. While commercial microwave reflection-based probes exist, they can only be used in a lab for a variety of applications.
Paul M. Meaney, Shireen D. Geimer, Roberta M. diFlorio-Alexander, Robin Augustine, Timothy Raynolds   +4 more
openaire   +4 more sources

Towards Non-Invasive Diagnosis of Skin Cancer: Sensing Depth Investigation of Open-Ended Coaxial Probes

Sensors, 2021
Dielectric properties of biological tissues are traditionally measured with open-ended coaxial probes. Despite being commercially available for laboratory use, the technique suffers from high measurement error. This prevents the practical applications of
Cemanur Aydinalp, Sulayman Joof, Tuba Yilmaz   +2 more
doaj   +1 more source

Analysis of Calibration Procedure for Open-Ended Coaxial Probe

2022 IEEE USNC-URSI Radio Science Meeting (Joint with AP-S Symposium), 2022
The implementation of machine and deep learning algorithms to solve microwave related problems have been of interest to researchers. These algorithms require large amount of data to design a robust model. In this work, a cost-effective and fast method to retrieve the reflection coefficients of a material under test using the admittance model of the ...
Joof, Sulayman, Aydinalp, Cemanur, Dilman, Ismail, Akinci, Mehmet Nuri, Yilmaz, Tuba   +4 more
openaire   +1 more source