ANTENNA FOR AN ELECTRONIC DEVICE
First Claim
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1. A radio or power transfer antenna, in the form of a planar conductive winding, wherein one of the two ends of the planar winding is directly connected to a metal section or plane which continuously surrounds the planar conductive winding.
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Abstract
A radio or power transfer antenna, in the form of a planar conductive winding, with one of two ends of the planar conductive winding directly connected to a metal section or plane which continuously surrounds the planar conductive winding.
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Citations
20 Claims
- 1. A radio or power transfer antenna, in the form of a planar conductive winding, wherein one of the two ends of the planar winding is directly connected to a metal section or plane which continuously surrounds the planar conductive winding.
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7. A radio frequency circuit, comprising:
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an antenna including a planar conductive winding having two ends and where one of the two ends is directly connected to a metal section which continuously surrounds the planar conductive winding; a contactless front end circuit; and a matching network coupled between the contactless front end circuit and the antenna, wherein the matching network includes a first capacitive element provided between each end of the planar conductive winding and a corresponding terminal of the contactless front end circuit. - View Dependent Claims (8)
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9. An electronic device, comprising:
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electronic circuitry; and a radio frequency circuit coupled to the electronic circuitry, the radio frequency circuit including, an antenna having a planar conductive winding with two ends, one of the ends being directly connected to a metal plane that continuously surrounds the planar conductive winding; a contactless front end circuit including a plurality of terminals; and a matching network coupled between the contactless front end circuit and the antenna, wherein the matching network includes a first capacitive element connected between each end of the planar conductive winding and a corresponding one of the terminals of the contactless front end circuit. - View Dependent Claims (10, 11, 12)
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13. A method, comprising:
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forming a planar antenna within an opening of a metal plane, the metal plane completely surrounding the planar antenna and the planar antenna including first and second ends; connecting the first end of the planar antenna directly to the metal plane; and isolating a common mode signal on the first and second ends of the planar antenna from a communications circuit configured to be coupled to the first and second ends of the planar antenna. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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Specification