Patent ID: 7868838
Filing Date: 2011-01-11
Classification: H01Q

Abstract:
1. An ultra wideband antenna comprising: a ground element comprising an upper first side; a first metal sheet connected to the first side of the grounding element and a long arm separated from the first side defining a slot with respect to the first side of the ground element; a second metal sheet electrically connected to the first metal sheet; and a third metal sheet perpendicular to the first and second metal sheet; wherein said slot, said second metal sheet and said third metal sheet work together to form an ultra broad resonant frequency; wherein a notch is formed in a joint between the first metal sheet and the second metal sheet, and the slot defines an open end terminated around said notch, under condition that a feeder cable includes an outer cable soldered to the grounding element around said open end of said slot, and an inner cable soldered to said joint.