Vol. 19 No. 2 (2022): June 2022
Research Papers

NDT of Dielectric Material using CPW FED UWB Receiver Antenna and Single Band Sensor Antenna

Sandeep Singh
Satish Dhawan Space Center, ISRO, Sriharikota, Andhra Pradesh, India - 524124
Mohammad Imroz Khan
Satish Dhawan Space Center, ISRO, Sriharikota, Andhra Pradesh, India - 524124
Valavoju Mahesh Chary
Satish Dhawan Space Center, ISRO, Sriharikota, Andhra Pradesh, India - 524124
Sivaramakrishnan S
Satish Dhawan Space Center, ISRO, Sriharikota, Andhra Pradesh, India - 524124

Published 26-06-2022

Keywords

  • CPW,
  • dielectric,
  • non destructive testing,
  • patch antenna,
  • sensor antenna,
  • UWB antenna
  • ...More
    Less

How to Cite

Singh , S., Khan , M. I. ., Chary, V. M., & S, S. (2022). NDT of Dielectric Material using CPW FED UWB Receiver Antenna and Single Band Sensor Antenna. Journal of Non-Destructive Testing and Evaluation (JNDE), 19(2), 15–21. Retrieved from http://jnde.isnt.in/index.php/JNDE/article/view/1

Abstract

This document presents a simulation model for carrying out non destructive evaluation of relative permittivity for dielectric materials using dual antenna setup. The proposed model involves coplanar waveguide fed single band sensor antenna and an ultra wideband receiver antenna. The sensor antenna consists of a single resonating band and is mounted on the surface of the test material. An ultra wideband antenna is placed in the far field region of the sensor antenna inorder to capture the frequencies radiated by the sensor antenna. The working principle of the proposed concept lies in the fact that the resonating frequency of the sensor antenna is a function of relative permittivity of the dielectric material under test. The designed sensor antenna radiates at a particular known frequency when mounted on the surface of the test material of known permittivity. This frequency radiated by sensor antenna is captured by ultra wideband antenna and any shift in the resonating band of the sensor antenna can easily be detected. Thus any shift in resonating band for sensor antenna will directly reflect the change in the permittivity value of the test material. The proposed sensor antenna has resonating band with center frequency at 5 GHz, while the ultra wideband antenna covers the entire frequency sweep from 3 - 12 GHz.

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