Patent ID: 8581785

Claim:
An antenna system comprising: an antenna element; a ground plane; the antenna element including a feeding point; the ground plane operating in cooperation with the antenna element to enhance radiation efficiency in at least two non-overlapping frequency bands; the ground plane comprising a first conducting surface, a second conducting surface, and a conducting strip; the first conducting surface having an elongated shape with two opposite sides, the two opposites sides defining a first side and a second side; the conducting strip is connected to the first side of the first conducting surface and to the second conducting surface allowing current to flow between the first conducting surface and the second conducting surface; the first conducting surface extends beyond the second conducting surface; the conducting strip is narrower than the first side of the first conducting surface; a surface of the second conducting surface is at least two times greater than a surface of the first conducting surface; the first conducting surface, the second conducting surface, and the conducting strip define a first structure; the antenna element is located at the second side of the first conducting surface; a connection element that electromagnetically couples the antenna element to the ground plane; and the antenna system is configured to transmit and receive electromagnetic waves corresponding to the at least two non-overlapping frequency bands.