| 摘要 |
A multi-band antenna has a base plate which defines a slot longitudinally extending and penetrating through one edge of the base plate to divide the base plate into a feeding portion and a grounding portion. A first radiating portion extends substantially perpendicularly from the feeding portion. A second radiating portion includes a connecting section substantially perpendicularly extending from the first radiating portion and substantially parallel and adjacent to the base plate and a radiating part connected with the connecting section and opposite to the base plate. The radiating part has a first radiating strip, a second radiating strip, a third radiating strip and an extended radiating strip, all of which shows a substantial stair-shape in combination.
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