Patent ID: 7466276

Claim:
A broadband inverted-F antenna, installed on a circuit board having a grounding plane at a position proximate to a lateral edge of the circuit board, and the broadband inverted-F antenna being disposed between the lateral edge of the circuit board and the grounding plane, comprising: an antenna body, comprising a first portion, a second portion and a third portion, wherein the wire width of the first portion is smaller than the wire width of the third portion, the second portion is disposed between the first portion and the third portion, the wire width of the second portion is tapered from a first end to a second end thereof, the first end of the second portion is coupled to an end of the first portion that faces towards the third portion, and the second end of the second portion is connected to an end of the third portion that faces towards the first portion; a short circuit line, disposed between a side of the first portion facing towards the grounding plane and the grounding plane, wherein an end of the short circuit line is connected to an end of the first portion opposite to the end connected to the second portion, and another end of the short circuit line is extended to the grounding plane; and a feed line, disposed between a side of the first portion facing towards the grounding plane and the grounding plane, wherein an end of the feed line is connected to the first portion at a position proximate to the first end of the second portion, and another end of the feed line is extended towards the grounding plane and connected to a signal transmitting and receiving loop of the circuit board.