Version 1
: Received: 19 October 2021 / Approved: 20 October 2021 / Online: 20 October 2021 (12:50:17 CEST)
How to cite:
Najib, N.; You, K.Y.; Perez, M.; Augustine, R. Comparative Study of Complex-Ratio-Measuring Circuits and Coaxial Probe in Diagnosis of Breast Tumors. Preprints2021, 2021100292. https://doi.org/10.20944/preprints202110.0292.v1
Najib, N.; You, K.Y.; Perez, M.; Augustine, R. Comparative Study of Complex-Ratio-Measuring Circuits and Coaxial Probe in Diagnosis of Breast Tumors. Preprints 2021, 2021100292. https://doi.org/10.20944/preprints202110.0292.v1
Najib, N.; You, K.Y.; Perez, M.; Augustine, R. Comparative Study of Complex-Ratio-Measuring Circuits and Coaxial Probe in Diagnosis of Breast Tumors. Preprints2021, 2021100292. https://doi.org/10.20944/preprints202110.0292.v1
APA Style
Najib, N., You, K.Y., Perez, M., & Augustine, R. (2021). Comparative Study of Complex-Ratio-Measuring Circuits and Coaxial Probe in Diagnosis of Breast Tumors. Preprints. https://doi.org/10.20944/preprints202110.0292.v1
Chicago/Turabian Style
Najib, N., Mauricio Perez and Robin Augustine. 2021 "Comparative Study of Complex-Ratio-Measuring Circuits and Coaxial Probe in Diagnosis of Breast Tumors" Preprints. https://doi.org/10.20944/preprints202110.0292.v1
Abstract
A developed six-port reflectometry (SPR) system was integrated to measure the relative permittivity of tumor and normal breast tissue for medical diagnostic purpose. In order to obtain an accurate and precise measurement, the calibration process was done to the SPR using the well-known three-standard technique. Next, the studied dielectric probe was connected to the calibrated measurement-port of the SPR. The open end of the probe aperture was dibbed into the normal and tumor synthetic breast tissue samples to measure the synthetic breast tissues dielectric constant, ɛrʹ, and loss factor, ɛrʺ in the frequency range of 1.5 GHz to 3.3 GHz. Finally, the comparative studies were conducted between commercial VNA with Keysight 85070E dielectric probe and the studied SPR-probe system based on the measured magnitude of the reflection coefficient, phase shift, dielectric constant, and loss factor of the synthetic breast samples. The maximum absolute errors of the measured reflection coefficient magnitude, phase shift, dielectric constant, and loss factor were found to be 0.01, 1.07°, 1.12, and 0.75, respectively. It was ascertained that the predicted dielectric constant, ɛrʹ, is able to differentiate between normal, (ɛrʹ < 50) and tumor, (ɛrʹ > 50) breast tissues.
Keywords
six-port circuits; complex-ratio-measuring circuits; open-ended coaxial probe; breast tumors; RF reflectometer; relative complex permittivity; one-port calibration; graphical user interface
Subject
Engineering, Electrical and Electronic Engineering
Copyright:
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
