Noncontact microwave material characterization

Details Noncontact microwave material characterization Noncontact microwave material characterization

Nov 2001

adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2001spie.4491..270g&link_type=abstract

Proc. SPIE Vol. 4491, p. 270-279, Subsurface and Surface Sensing Technologies and Applications III, Cam Nguyen; Ed.

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In this paper, a nondestructive method for the non-contact characterization of non-planar dielectric objects is presented. Traditionally, this kind of measurements is achieved by using spot-focused antennas associated to a vector automatic 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 is computed from the reflection coefficient of metal-backed samples of different shapes at 2.45 GHz.

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