  This work investigates the influence of geometric variations in dipole
micro/nano antennas, regarding their implications on the characteristics of the
electric field inside the gap space of antenna monopoles. The gap is the
interface for a metal-Insulator-Metal (MIM) rectifier diode and it needs to be
carefully optimized, in order to allow better electric current generation by
tunneling current mechanisms. The arrangement (antenna + diode or rectenna) was
designed to operate around 30 Terahertz (THz).
