Ultra-broadband material spectroscopy from scattering parameters obtained from time domain measurements

Ajay Bandla, Nathaniel Hager, Mohammad Reza Tofighi

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

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.

Original languageEnglish (US)
Title of host publication2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Subsystems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016
PublisherInstitute of Electrical and Electronics Engineers Inc.
ISBN (Electronic)9781479963119
DOIs
Publication statusPublished - Aug 2 2016
Event2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Sub-Systems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016 - Philadelphia, United States
Duration: Sep 27 2014 → …

Publication series

Name2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Subsystems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016

Other

Other2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Sub-Systems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016
CountryUnited States
CityPhiladelphia
Period9/27/14 → …

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All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Biomedical Engineering
  • Instrumentation

Cite this

Bandla, A., Hager, N., & Tofighi, M. R. (2016). Ultra-broadband material spectroscopy from scattering parameters obtained from time domain measurements. In 2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Subsystems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016 [7529467] (2014 IEEE Benjamin Franklin Symposium on Microwave and Antenna Subsystems for Radar, Telecommunication, and Biomedical Applications, BenMAS 2016). Institute of Electrical and Electronics Engineers Inc.. https://doi.org/10.1109/BenMAS.2014.7529467