Antenna structure for a wireless device with a ground plane shaped as a loop
First Claim
1. An antenna structure for a wireless device comprising:
- a ground plane, the ground plane comprising a first end portion and a second end portion, andan antenna elementwherein the first end portion and the second end portion form an opening therebetween such that the ground plane has the shape of an open loop that fits within an area having a longest dimension smaller than a quarter of a free-space wavelength of operation of the antenna structure, andwherein the antenna element is located within said opening and in the proximity of at least one of the first end portion and the second end portion.
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Abstract
This invention refers to an antenna structure for a wireless device comprising a ground plane and an antenna element, wherein the ground plane has the shape of an open loop. The invention further refers to an antenna structure for a wireless device, such as a light switch or a wristsensor or wristwatch, comprising an open loop ground plane having a first end portion and a second end portion, the open loop ground plane defining an opening between the first end portion and the second end portion; and an antenna component positioned within the opening defined between the first end portion and the second end portion and overlapping at least one of the first end portion or the second end portion. Further the invention refers to a corresponding wireless device and to a method for integrating such an antenna structure in a wireless device.
37 Citations
40 Claims
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1. An antenna structure for a wireless device comprising:
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a ground plane, the ground plane comprising a first end portion and a second end portion, and an antenna element wherein the first end portion and the second end portion form an opening therebetween such that the ground plane has the shape of an open loop that fits within an area having a longest dimension smaller than a quarter of a free-space wavelength of operation of the antenna structure, and wherein the antenna element is located within said opening and in the proximity of at least one of the first end portion and the second end portion. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28, 29, 30)
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31. An antenna structure for a wireless device, comprising:
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an open loop ground plane having a first end portion and a second end portion, the open loop ground plane defining an opening between the first end portion and the second end portion, the first end portion and the second end portion being folded together such that the ground plane fits within an area having a longest dimension smaller than a quarter of a free-space wavelength of operation of the antenna structure; and an antenna component positioned within the opening defined between the first end portion and the second end portion and overlapping at least one of the first end portion or the second end portion. - View Dependent Claims (32, 33, 34)
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35. A wireless device comprising an antenna structure, the antenna structure comprising:
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a ground plane, the ground plane comprising a first end portion and a second end portion, and an antenna element wherein the first end portion and the second end portion form an opening therebetween such that the ground plane has the shape of an open loop that fits within an area having a longest dimension smaller than a quarter of a free-space wavelength of operation of the antenna structure, and wherein the antenna element is located within said opening and in the proximity of at least one of the first end portion and the second end portion. - View Dependent Claims (36)
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37. A method to integrate an antenna structure in a wireless device comprising the steps of:
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providing a ground plane to said wireless device, the ground plane comprising a first end portion and a second end portion; folding the first end portion and the second end portion together so as to form an opening therebetween such that said ground plane has the shape of an open loop that fits within an area having a longest dimension smaller than a quarter of a free-space wavelength of operation of the antenna structure; and arranging an antenna element within said opening and in the proximity of at least one of the first end portion and the second end portion. - View Dependent Claims (38, 39)
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40. A wireless device comprising an antenna structure,
the antenna structure comprising: -
an open loop ground plane having a first end portion and a second end portion, the open loop ground plane defining an opening between the first end portion and the second end portion, the first end portion and the second end portion being folded together such that the ground plane fits within an area having a longest dimension smaller than a quarter of a free-space wavelength of operation of the antenna structure; and an antenna component positioned within the opening defined between the first end portion and the second end portion and overlapping at least one of the first end portion or the second end portion.
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Specification