TY - GEN
T1 - Ultra-broadband material spectroscopy from scattering parameters obtained from time domain measurements
AU - Bandla, Ajay
AU - Hager, Nathaniel
AU - Tofighi, Mohammad Reza
N1 - Publisher Copyright:
© 2014 IEEE.
Copyright:
Copyright 2017 Elsevier B.V., All rights reserved.
PY - 2016/8/2
Y1 - 2016/8/2
N2 - Scattering parameter measurements can provide a key insight towards understanding material properties, pertaining to permittivity. The relaxation phenomena (e.g. free and bond water relaxation) and the frequencies at which they occur can convey valuable information in dielectric spectroscopy for material process monitoring and biology research. These relaxations can range from kHz to GHz range. Extracting the reflection/transmission coefficients or scattering parameters from time domain measurements over a broad range of frequencies, from kHz to GHz, can be challenging. The current approach often employed by material scientists involves performing Laplace transform, through a numerical integration, on the time domain data. On the other hand, the more computationally efficient fast Fourier transform (FFT) techniques have been well-developed and widely used in the engineering community. In this study, we propose a method, based on fast Fourier transform (FFT) of non-uniformly sampled time domain reflectometry (TDR) data, to obtain the frequency domain information in an ultra-broadband range from kHz to GHz. We test this method to known lossy materials.
AB - Scattering parameter measurements can provide a key insight towards understanding material properties, pertaining to permittivity. The relaxation phenomena (e.g. free and bond water relaxation) and the frequencies at which they occur can convey valuable information in dielectric spectroscopy for material process monitoring and biology research. These relaxations can range from kHz to GHz range. Extracting the reflection/transmission coefficients or scattering parameters from time domain measurements over a broad range of frequencies, from kHz to GHz, can be challenging. The current approach often employed by material scientists involves performing Laplace transform, through a numerical integration, on the time domain data. On the other hand, the more computationally efficient fast Fourier transform (FFT) techniques have been well-developed and widely used in the engineering community. In this study, we propose a method, based on fast Fourier transform (FFT) of non-uniformly sampled time domain reflectometry (TDR) data, to obtain the frequency domain information in an ultra-broadband range from kHz to GHz. We test this method to known lossy materials.
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U2 - 10.1109/BenMAS.2014.7529467
DO - 10.1109/BenMAS.2014.7529467
M3 - Conference contribution
AN - SCOPUS:84992195847
T3 - 2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Subsystems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016
BT - 2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Subsystems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016
PB - Institute of Electrical and Electronics Engineers Inc.
T2 - 2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Sub-Systems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016
Y2 - 27 September 2014
ER -