Near-Field Imaging of Dielectric Components Using an Array of Microwave Sensors

Microwave imaging is a high-resolution, noninvasive, and noncontact method for detecting hidden defects, cracks, objects with applications testing nonmetallic components such as printed circuit boards, biomedical diagnosis, aerospace inspection, etc. In this paper, an array of microwave sensors designed based on complementary split ring resonators (CSRR) are used to evaluate the features in dielectric media nondestructive diagnosis. array, each element resonates at different frequency range 1 GHz 10 GHz. Even though operating frequencies not that high, acquisition evanescent waves extreme proximity imaged object processing them using near-field holographic allows obtaining high-resolution images. The performance proposed demonstrated through simulation experimental results.