Wideband Cavity-backed Folded Dipole Superstrate Antenna for 60 GHz Applications

The wideband and high efficiency folded dipole antenna for 60 GHz applications with the integration capability in a low-cost plastic packaging technology was presented. The proximity of the cavity metal walls was used in an input impedance bandwidth enhancement process. Moreover, the metal cavity has the potential to make the antenna performance to a large extend insensitive to the surrounding package and PCB-level dielectric and metal structures. The antenna performance showed an extremely low sensitivity to the cavity manufacturing and attachment tolerances which is of special importance at mm-wave frequencies. The ideas presented in this paper are patent pending