Shared antenna structures for near-field communications and non-near-field communications circuitry
First Claim
1. An electronic device, comprising:
- an inverted-F antenna resonating element;
an antenna ground that is separated from the inverted-F antenna resonating element by an opening;
a first path that is coupled between the antenna ground and the inverted-F antenna resonating element and that spans the opening;
a second path that is coupled between the antenna ground and the inverted-F antenna resonating element and that spans the opening;
an antenna feed path that is coupled to the inverted-F antenna resonating element;
non-near-field communications circuitry coupled to the antenna feed path that transmits and receives signals in a non-near-field communications signal band in which the second path forms a short circuit across the opening and serves as a return path for the inverted-F antenna resonating element and in which the first path forms an open circuit; and
near field communications circuitry coupled to the antenna feed path that transmits and receives near field communications in a near field communications band in which the first path forms a short circuit across the opening and serves as a portion of a near field communications loop antenna and in which the second path forms an open circuit.
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Accused Products
Abstract
Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may include conductive housing structures such as a peripheral conductive housing member. The antenna structures may be based on an inverted-F antenna resonating element or other types of antenna resonating element. An electronic device may have near field communications circuitry and non-near-field communications circuitry such as cellular telephone, satellite navigation system, or wireless local area network transceiver circuitry. Antenna structures may be configured to handle signals associated with the non-near-field communications circuitry. The antenna structures may also have portions that form a near field communications loop antenna for handling signals associated with the near field communications circuitry.
70 Citations
21 Claims
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1. An electronic device, comprising:
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an inverted-F antenna resonating element; an antenna ground that is separated from the inverted-F antenna resonating element by an opening; a first path that is coupled between the antenna ground and the inverted-F antenna resonating element and that spans the opening; a second path that is coupled between the antenna ground and the inverted-F antenna resonating element and that spans the opening; an antenna feed path that is coupled to the inverted-F antenna resonating element; non-near-field communications circuitry coupled to the antenna feed path that transmits and receives signals in a non-near-field communications signal band in which the second path forms a short circuit across the opening and serves as a return path for the inverted-F antenna resonating element and in which the first path forms an open circuit; and near field communications circuitry coupled to the antenna feed path that transmits and receives near field communications in a near field communications band in which the first path forms a short circuit across the opening and serves as a portion of a near field communications loop antenna and in which the second path forms an open circuit. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 13, 14, 15, 16, 17, 18, 20, 21)
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11. Antenna structures in an electronic device having a length, a width, and a height, the antenna structures comprising:
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an inverted-F antenna resonating element formed from metal structures, wherein the metal structures extend across the width and the height of the electronic device; an antenna ground that is separated from the metal structures by an opening; an antenna feed path that is coupled to the inverted-F antenna resonating element, wherein the inverted-F antenna resonating element and antenna ground are configured to exhibit an antenna resonance in a communications band above 700 MHz and at least part of the metal structures form a near field communications loop antenna that is configured to transmit near field communications signals in a near field communications band; a first path coupled between the inverted-F antenna resonating element and the antenna ground across the opening; and a second path coupled between the inverted-F antenna resonating element and the antenna ground across the opening, wherein the first path forms a short circuit across the opening that forms a portion of the near field communications loop antenna and the second path forms an open circuit in the near field communications band, and the second path forms a short circuit across the opening that forms a return path for the inverted-F antenna resonating element and the first path forms an open circuit in the communications band above 700 MHz. - View Dependent Claims (12, 19)
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Specification