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Nondestructive Permittivity Profile Retrieval of Non-Planar Objects by Free Space Microwave Techniques

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Abstract

In this paper, a nondestructive method for the non-contact characterization of non-planar dielectric objects is presented. Traditionally, this kind of measurement is achieved by using spot-focused antennas associated to a vector network analyzer. In this study, we propose a free space measurement system, fitted out with a classical horn antenna, which demonstrates its usefulness in many practical cases. The permittivity has been computed from the measurement of the reflection coefficient of metal-backed samples of different shapes at 2.45 GHz. Signal processing tools, based on deconvolution techniques, are developed to enhance the accuracy of the permittivity measurement.

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References

  1. Bahr, A.J., 1995, Experimental techniques in microwave NDE, Review of Progress in Quantitative Nondestructive Evaluation, v. 14, Thompson, D.O, and Chimenti, D.E., eds., Plenum Press, New York.

    Google Scholar 

  2. Zoughi, R., 1995, Microwave and millimeter wave nondestructive testing: a succinct introduction: Nondestructive Evaluation, v. 7, no. 2-3, p. 71-74.

    Google Scholar 

  3. Nyfors, E., 2000, Industrial microwave sensors-a review: Subsurface Sensing Technologies and Applications-An International Journal, v. 1, no. 1, p. 23-43.

    Google Scholar 

  4. Jarvis, J.B., Geyer, R.G., Grosvenor, J.H., Janezic, M.D., Jones, C.A., Riddle, B., Weil, C.M., and Krupka, J., 1998, Dielectric characterization of low-loss materials-a comparison of techniques: IEEE Transactions on Dielectrics and Electrical Insulation, v. 5, no. 4, p. 571-577.

    Google Scholar 

  5. Bakhtiari, S., Ganchev, S.I., and Zoughi, R., 1993, Open-ended rectangular waveguide for nondestructive thickness measurement and variation detection of lossy dielectric slabs backed by a conducting plate: IEEE Transactions on Instrumentation and Measurement, v. 42, no. 1, p. 19-24.

    Google Scholar 

  6. Misra, D., 1995, On the measurement of the complex permittivity of materials by an openended coaxial probe: IEEE Microwave Guided Wave Letters, v. 5, p. 161-163.

    Google Scholar 

  7. Stuchly, M.A. and Stuchly, S.S., 1997, Coaxial line reflection methods for measuring dielectric properties of biological substances at radio and microwave frequencies-a review: IEEE Transactions on Instrumentation and Measurement, v. 29, no. 3, p. 176-183

    Google Scholar 

  8. Jarvis, J.B., Janezic, M.D., Domich, P., and Geyer, R., 1994, Analysis of an open-ended coaxial probe with lift-off for nondestructive testing: IEEE Transactions on Instrumentation and Measurement, v. 43, no. 5, p. 711-718.

    Google Scholar 

  9. Ghodgaonkar, D.K., Varadan, V.V., and Varadan, V.K., 1990, Free space measurement of complex permittivity and complex permeability of magnetic materials at microwaves frequencies: IEEE Transactions on Instrumentation and Measurement, v. 39, no. 9, p. 387-393.

    Google Scholar 

  10. Bringhurst, S., Iskander, M.F., and White, M.J., 1997, Thin-sample measurements and error analysis of high-temperature coaxial dielectric probes: IEEE Transactions on Microwave Theory and Techniques, v. 45, no. 12, p. 2073-2083.

    Google Scholar 

  11. Jose, K.A., Varadan, V.V., Hollinger, R.D., Tellakula, A., and Varadan, V.K., 2000, Non contact broadband microwave characterization at low and high temperatures: Subsurface Sensing Technologies and Applications II-Proceedings of SPIE, San Diego CA.

  12. Chan, W.F.P. and Chambers, B., 1987, Measurement of non-planar dielectric samples using an open resonator: IEEE Transactions on Microwave Theory and Techniques, v. 35, no.12, p. 1429-1434.

    Google Scholar 

  13. Varadan, V.V., Jose, K.A., and Varadan, V.K., 2000, In situ microwave characterization of non-planar dielectric objects: IEEE Transactions on Microwave Theory and Techniques, v. 48, no. 3, p. 388-394.

    Google Scholar 

  14. Lasri, T., Glay, D., Achrait, L., Mamouni, A., and Leroy, Y., 2000, Microwave methods and systems for nondestructive control: Subsurface Sensing Technologies and Applications—An International Journal, v. 1, no. 1, p. 141-160.

    Google Scholar 

  15. Mikhnev, V.A. and Vainikainen, P., 2000, Two-step inverse scattering method for onedimensional permittivity profiles: IEEE Transactions on Antennas and Propagation, v. 48, no. 2, p. 293-298.

    Google Scholar 

  16. Lasri, T., Glay, D., Mamouni, A., and Leroy Y., 1998, Non-destructive testing of materials by microwave systems: Electronics Letters, v. 34, no. 5, p. 470-471.

    Google Scholar 

  17. Lasri, T., Glay, D., Mamouni, A., and Leroy, Y., 1999, Free space moisture measurement of cellular concrete: Third Workshop on Electromagnetic Wave Interaction with water and moist substances, p. 184-188, Athens, GA.

  18. Lasri, T., Glay, D., Mamouni, A., and Leroy, Y. 2000, Development of microwave moisture measurement systems around microstrip complex correlator: Sensors Update, v. 7, Chap. 9, p. 233-248, Wiley-VCH Verlag GmbH, Germany.

    Google Scholar 

  19. Qaddoumi, N. and Zoughi, R., 1997, Preliminary study of the influences of effective dielectric constant and nonuniform probe aperture field distribution on near field microwave images: Material Evaluation, p. 1169-1173.

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Authors and Affiliations

  1. Institut d'Electronique et de Micro-électronique du Nord, UMR CNRS, 8520 IEMN-DHS, Avenue Poincaré, B.P. 69, 59652, Villeneuve d'Ascq Cedex, France

    D. Glay, T. Lasri & A. Mamouri

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  1. D. Glay
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  2. T. Lasri
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  3. A. Mamouri
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Glay, D., Lasri, T. & Mamouri, A. Nondestructive Permittivity Profile Retrieval of Non-Planar Objects by Free Space Microwave Techniques. Subsurface Sensing Technologies and Applications 2, 391–409 (2001). https://doi.org/10.1023/A:1013269001624

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  • DOI: https://doi.org/10.1023/A:1013269001624

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