Double Negative Reconfigurable Multilayered Imaging Metamaterial Antenna

This paper presents a new, multilevel, dynamic feed-direction-controllable, double-polarized, S-band operation metamaterial antenna, i.e., to mention one example here, for bone fracture diagnostic application. It is constructed using PIN diodes to ensure dynamic feed directionality, copper walls, and levels of image gain enhancement and accuracy control. The novelty encompasses the hexagonal resonator type, square spiral shape metamaterial unit cell, utilized in the rotated 45-degree $2 \times 2$ lattice to achieve independent polarization operation. Simulation studies ensured double-negative behavior, polarization controllability, and proper enhancement of the gain. The whole antennal system presents a promising low-cost, portable, and emission-free approach relative to conventional approaches to bone fracture diagnostics, with the potential of enhanced patient access and outcome, to be utilized in medical imaging applications.