Multiband antenna
AssigneeChiun Mai Communication Systems, Inc.
InventorsCho-Kang Hsu, Che-Yen Lin
Life of this patent
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Abstract
A multiband antenna includes a feed end, a first ground end, a second ground end, a ground path, parasitic member, a first resonating member, and a second resonating member. The ground path is connected between the feed end and the first ground end. The first resonating member operates at a low frequency resonating mode. The second resonating member operates at a high frequency resonating mode. The second resonating member includes a first bent portion and a second bent portion. The first bent portion is coupled with the parasitic member to widen a bandwidth of the second resonating member at the high frequency resonating mode. The second bent portion is coupled with the first resonating member to reduce an electrical length of the first resonating member.
Claims15
A multiband antenna, comprising:
- a feed end;
- a first ground end;
- a second ground end;
- a ground path, the ground path connected between the feed end and the first ground end;
- a parasitic member extending from the second ground end;
- a first resonating member connected to the ground path, the first resonating member for operating at a first frequency resonating mode;
- a second resonating member connected to the ground path, the second resonating member for operating at a second frequency resonating mode, the second resonating member comprising:
- a first bent portion, the first bent portion coupled with the parasitic member to widen a bandwidth of the second resonating member at the high frequency resonating mode;
- and
- a second bent portion, the second bent portion coupled with the first resonating member to reduce an electrical length of the first resonating member;
- wherein the second bent portion extends from the first bent portion along an opposite direction, the first resonating member and the second bent portion define a first coupling gap;
- the first bent portion and the parasitic member define a second coupling gap.
A multiband antenna, comprising:
- a feed end;
- a first ground end;
- a second ground end extending from the second ground end;
- a ground path, the ground path connected between the feed end and the first ground end;
- a parasitic member;
- a first resonating member connected to the ground path, the first resonating member for operating at a first frequency resonating mode;
- a second resonating member connected to the ground path, the second resonating member for operating at a second frequency resonating mode, the second resonating member comprising:
- a first bent portion, the first bent portion coupled with the parasitic member to widen a bandwidth of the second resonating member at the high frequency resonating mode, the first bent portion comprising:
- a substantially L-shaped first bent section;
- a second bent section;
- and
- a third bent section, one end of the first bent section perpendicularly connected to the first resonating member, another end of the first bent section connected to the second bent section, the third bent section extending from an end of the second bent section;
- a second bent portion, the second bent portion is coupled with the first resonating member to reduce an electrical length of the first resonating member;
- wherein the second bent portion extends from the first bent portion along an opposite direction, the first resonating member and the second bent portion define a first coupling gap;
- the first bent portion and the parasitic member define a second coupling gap.
Dependencies are inferred from the claim text.