Methods, apparatuses, and systems for radio-frequency imaging sensors for advanced fingterprint biometrics and medical imaging

A radio-frequency (RF) imaging apparatus comprising:

• a substrate;
• at least one RF source;
• a plurality of RF detectors;
• and
• a single traveling wave antenna,
• where the at least one RF source, the at least one RF detector, and the at least one linear imaging array are monolithically integrated on the substrate, and
• where the RF imaging apparatus is configured to operate in a frequency range of 30 GHz-10 THz.

A computing system configured to perform RF imaging of skin tissue, the computing system comprising:

• at least one memory device;
• at least one processor;
• and
• at least one physical computer readable medium coupled to the at least one memory device, the at least one physical computer readable medium comprising computer executable instructions that when executed by the at least one processor are configured to:
• propagate one or more RF signals into the skin tissue, where the RF signals are configured to penetrate multiple layers of the skin tissue and are in a frequency range of 30 GHz-10 THz;
• receive one or more reflected RF signals from the multiple layers of the skin tissue;
• record a digital state of each of the one or more reflected RF signals;
• construct a digital image of the skin tissue based on the recorded digital states of the one or more reflected RF signals;
• and
• determine an authentication state based on a comparison of the digital image and a prerecorded digital image of the skin tissue.