| 摘要 |
A multi-band antenna is provided to improve efficiency and gain thereof and to maintain broadband and multi-band characteristics by having a plurality of slots. A multi-band antenna includes a radiator(240). The radiator includes a main radiator(241), first and second sub radiators(242,243), and first and second slots(250,260). The main radiator has a rectangular shape. The first sub radiator is vertically connected to one side of the main radiator. The second sub radiator is vertically connected to the other side of the main radiator. The first slot has first to fifth slot segments. The first slot segment is formed along a boundary between the main radiator and the first sub radiator, and one end thereof is opened. One end of the second slot segment is vertically connected to the other end of the first slot segment. The third slot segment is vertically connected to the other end of the second slot segment and extended in opposite directions. The fourth slot segment is vertically extended from one end of the third slot segment. The fifth slot segment is vertically extended from the other end of the third slot segment. The second slot has sixth to ninth slot segments(261-264). One end of the sixth slot segment is opened to one side of the main radiator. One end of the seventh slot segment is connected to the other end of the sixth slot segment. One end of the eighth slot segment is connected to the other end of the seventh slot segment. The ninth slot segment is extended from the other end of the seventh slot segment to the second sub radiator and vertical to the eighth slot segment. |
