Patent ID: 9660329
Date: 2017-05-23
CPC Classifications: H01Q

Claim:
1. A directional antenna, comprising: a ground plane; a planar feeding element including a feeding point and adjacent to the ground plane; and a planar radiating element including a coupling point, wherein the ground plane, the planar feeding element and the planar radiating element are disposed on a same horizontal plane, a coupling gap is formed between the planar radiating element and the planar feeding element, both the coupling point and the feeding point are at a perpendicular line of the ground plane, the planar radiating element is electrically disconnected from the ground plane, the directional antenna operates at a resonant frequency, a distance between the coupling point and an open end of the planar radiating element is smaller than 0.16λ of the resonant frequency of the directional antenna, and a radiating pattern of the directional antenna centralizes towards a direction perpendicular to an edge of the ground plane and parallel to the horizontal plane.