A dual dielectric-resonator-loaded probe system designed for microwave medical imaging

Abstract

A dual probe system has been developed for conducting experiments at frequencies near 3 GHz. The system contains a pair of square loops and each of them is loaded by a cubic resonator with high dielectric constant to enhance its field intensity, resulting in a sensitivity about 30 dB greater than other near-field probes. The high sensitivity allows the probe detecting field disturbances further away compared to other probes, thereby possibly enabling strong penetration through a lossy medium. Therefore, this probe system potentially finds application in medical imaging.