Multi-band antenna

摘要

A multi-band inverted-F antenna including a ground plane, a signal feeding circuit, first, second and third main radiation parts is provided. The signal feeding circuit is electrically isolated from the ground plane and receives/transmits wireless signals. The first and the second main radiation part are both physically and electrically connected to the signal feeding circuit, and generate first and second frequency band operation modes for the inverted-F antenna, respectively. The third main radiation part is electrically isolated from the signal feeding circuit, the first and the second main radiation parts, and generates a third frequency band operation mode for the inverted-F antenna via to signal coupling between the first and the third main radiation parts and/or signal coupling between the second and the third main radiation parts.

主权项

1. A multi band antenna, comprising:
a ground plane; a signal feeding portion, electrically isolated from the ground plane, for receiving/transmitting wireless signals; a first main radiation part, physically and electrically connected to the signal feeding portion, for generating a first frequency band operation mode for the multi band antenna; a second main radiation part, physically and electrically connected to the signal feeding portion, for generating a second frequency band operation mode for the multi band antenna; and a third main radiation part, extending from the ground plane, the third main radiation part electrically isolated from the signal feeding portion, the first main radiation part and the second main radiation part, the third main radiation part generating a third frequency band operation mode for the multi band antenna via a signal coupling between the first and the third main radiation parts and/or a signal coupling between the second and the third main radiation parts; wherein the first, the second and the third main radiation parts are on a first plane; the ground plane and the signal feeding portion are on a second plane; and the first plane and the second plane are L-shaped.