Patent attributes
A planar antenna includes a radiator and a ground plane, where the radiator is formed on the ground plane. The radiator includes a printed microstrip line. The radiator includes a human face-shaped radiator pattern printed on a side of the substrate. The human face-shaped radiator pattern has an elliptical head portion, two eye portions with printed eyeball portions, two ear portions, and a mouth portion. The printed microstrip line connects to the human face-shaped radiator pattern. The ground plane includes first, second, and third circular defect areas printed on back side of the substrate. The first and second circular defect areas have the same diameter, while the third circular defect area has a diameter smaller than the first and second circular defect areas. The third circular defect area is closer to an end surface of the ground plane than the first and second circular defect areas.
