Removable electronic device case with supplemental antenna element
First Claim
1. A removable electronic device case that is configured to mate with an electronic device that has an antenna and a connector port, comprising:
- a body that is configured to receive the electronic device;
a connector that mates with the connector port; and
a supplemental antenna element that is configured to be near-field coupled to the antenna, wherein the supplemental antenna element has a first segment that is electrically connected to the connector and a second segment that runs parallel to a portion of the antenna, the second segment is configured to be capacitively coupled to the antenna, and the second segment passes under the first segment.
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Accused Products
Abstract
A removable case may receive an electronic device. A male connector in the case may mate with a female connector in the device. A battery in the case may supply power to the device through the male connector. The electronic device may have an antenna formed from peripheral conductive housing structures and an antenna ground. The case may have a supplemental antenna that restores antenna performance when the device is received within the case. The supplemental antenna may be formed from a monopole antenna resonating element coupled to the antenna ground through the power pin. The monopole element may have a portion that runs parallel to the peripheral conductive housing structures. During operation of the antenna in the electronic device, the supplemental antenna in the case may be indirectly fed by near-field coupling between the supplemental antenna and the antenna of the electronic device.
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Citations
19 Claims
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1. A removable electronic device case that is configured to mate with an electronic device that has an antenna and a connector port, comprising:
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a body that is configured to receive the electronic device; a connector that mates with the connector port; and a supplemental antenna element that is configured to be near-field coupled to the antenna, wherein the supplemental antenna element has a first segment that is electrically connected to the connector and a second segment that runs parallel to a portion of the antenna, the second segment is configured to be capacitively coupled to the antenna, and the second segment passes under the first segment. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. Apparatus, comprising:
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a body formed at least partly from plastic; a battery mounted in the body; a male connector; a female connector coupled to the male connector; a signal path coupled between the battery and the male connector; and a monopole antenna resonating element within the body and having first and second opposing ends, wherein the first end is coupled to a pin in the male connector and a portion of the monopole antenna resonating element is interposed between the male and female connectors. - View Dependent Claims (10, 11, 12, 13)
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14. A removable case configured to mate with a cellular telephone having an antenna formed from peripheral conductive electronic device housing structures and an antenna ground, the case comprising:
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a connector that mates with a connector port on the cellular telephone, wherein the connector has a plurality of pins that includes a grounding power pin that is electrically coupled to the antenna ground when the removable case mates with the cellular telephone; a body that receives the cellular telephone; and a supplemental antenna in the body that is configured to be near-field coupled to the antenna in the cellular telephone and that enhances radio-frequency performance by the antenna when the cellular telephone is received by the body, wherein the supplemental antenna has only a single connection to the plurality of pins in the connector, the single connection to the plurality of pins being to the grounding power pin. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification