Terahertz Nondestructive Testing with Ultra-Wideband FMCW Radar

Barnabe Carre (1) , Adrien Chopard , Jean-Paul Guillet (1) , Frederic Fauquet (1) , Patrick Mounaix (1) , Pierre Gellie

1 IMS - Laboratoire de l'intégration, du matériau au système

This paper presents the development, performance, integration, and implementation of a 150 GHz FMCW radar based on a homodyne harmonic mixing scheme for noncontact, nondestructive testing. This system offers high-dynamic-range measurement capabilities up to 100 dB and measurement rates up to 7.62 kHz. Such interesting characteristics make this system attractive for imaging applications or contactless sensing. Numerous samples of different materials and geometries were imaged by taking advantage of the radar’s performance. By taking into account the nonionizing capability of the system, new applicative fields such as food industry and pharmaceutical packaging were explored.

Mots clés: Terahertz imaging; Frequency-modulated continuous wave radar; Millimeter waves; Nondestructive testing

Domaines: Electronique; Electromagnétisme

Barnabe Carre, Adrien Chopard, Jean-Paul Guillet, Frederic Fauquet, Patrick Mounaix, et al.. Terahertz Nondestructive Testing with Ultra-Wideband FMCW Radar. Sensors, 2022, 23 (1), pp.187. ⟨10.3390/s23010187⟩. ⟨hal-03930018⟩