Patent ID: 8659484

Claim:
A printed antenna, comprising: a substrate, comprising: an upper surface; and a lower surface opposite to the upper surface; a first ground plane located on the upper surface and having a first ground lateral side; a low frequency radiation portion located on the upper surface, wherein the low frequency radiation portion comprises: a first belt-like radiation portion; a second belt-like radiation portion, wherein one end of the second belt-like radiation portion is connected to one end of the first belt-like radiation portion to form a first bending; and a third belt-like radiation portion, wherein one end of the third belt-like radiation portion is connected to the other end of the second belt-like radiation portion to form a second bending, and the first belt-like radiation portion, the second belt-like radiation portion and the third belt-like radiation portion together form an opening; a high frequency radiation portion located on the upper surface and disposed inside the opening, wherein the high frequency radiation portion comprises: a first high frequency lateral side opposite to the first bending, wherein one end of the first high frequency lateral side is connected to the other end of the third belt-like radiation portion; and a second high frequency lateral side parallel to the first belt-like radiation portion, wherein one end of the second high frequency lateral side is connected to the other end of the first high frequency lateral side to form an acute angle; and a first matching portion located on the upper surface and on a vertical connection line connecting the vertex of an acute angle and the first ground lateral side, wherein the first matching portion is extended from the first ground lateral side and towards the first belt-like radiation portion; and a second matching portion adjacent to the first matching portion but not overlapping the first matching portion.