Miniaturized microstrip-fed "Dark Eyes" antenna for near-field microwave sensing

This letter presents a parametric study of a miniaturized, microstrip-fed "Dark Eyes" antenna for pulsed biological sensing. The antenna is considered to be in a medium with dielectric properties similar to those of biological materials. The planar antenna can be easily manufactured using printed circuit board technology with thin-film resistive layers. Analysis indicates fidelity above 0.92 and broadband characteristics. The simulated efficiency, return loss, radiation patterns, and the near-field electric-field vector magnitude are also presented.