Tunable antenna systems
First Claim
1. An electronic device having a periphery, comprising:
- radio-frequency transceiver circuitry;
an antenna having an antenna feed and ground plane structures;
a transmission line path coupled between the radio-frequency transceiver circuitry and the antenna feed;
peripheral conductive housing structures that run along the periphery and surround the ground plane structures, wherein the peripheral conductive housing structures include a portion that forms at least part of the antenna;
storage and processing circuitry configured to generate a control signal; and
an adjustable electrical component coupled to the peripheral conductive housing structures, wherein the adjustable electrical component has a control input that receives the control signal and the adjustable electrical component is configured to adjust a frequency response of the antenna based on the control signal.
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Abstract
An electronic device has wireless communications circuitry including an adjustable antenna system coupled to a radio-frequency transceiver. The adjustable antenna system may include one or more adjustable electrical components that are controlled by storage and processing circuitry in the electronic device. The adjustable electrical components may include switches and components that can be adjusted between numerous different states. The adjustable electrical components may be coupled between antenna system components such as transmission line elements, matching network elements, antenna elements and antenna feeds. By adjusting the adjustable electrical components, the storage and processing circuitry can tune the adjustable antenna system to ensure that the adjustable antenna system covers communications bands of interest.
76 Citations
20 Claims
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1. An electronic device having a periphery, comprising:
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radio-frequency transceiver circuitry; an antenna having an antenna feed and ground plane structures; a transmission line path coupled between the radio-frequency transceiver circuitry and the antenna feed; peripheral conductive housing structures that run along the periphery and surround the ground plane structures, wherein the peripheral conductive housing structures include a portion that forms at least part of the antenna; storage and processing circuitry configured to generate a control signal; and an adjustable electrical component coupled to the peripheral conductive housing structures, wherein the adjustable electrical component has a control input that receives the control signal and the adjustable electrical component is configured to adjust a frequency response of the antenna based on the control signal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic device having a periphery and opposing first and second faces, the electronic device comprising:
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ground plane structures; peripheral conductive housing structures that run along the periphery of the electronic device and surround the ground plane structures; a dielectric-filled gap in the peripheral conductive housing structures that divides the peripheral conductive housing structures into first and second segments, wherein the second segment is separated from the ground plane structures by a dielectric-filled opening, the dielectric-filled gap having a first end at the dielectric-filled opening and a second end at the first face of the electronic device; and an antenna formed from at least the second segment and the ground plane structures. - View Dependent Claims (12, 13, 14, 15, 16, 17)
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18. An electronic device having a periphery, a length, a width that is less than the length, and a height that is less than the width, comprising:
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ground plane structures; peripheral conductive housing structures that surround the ground plane structures, wherein the peripheral conductive housing structures comprise a first sidewall extending across the width of the electronic device, a second sidewall extending from a first end of the first sidewall along the length of the electronic device, and a third sidewall extending from a second end of the first sidewall along the length of the electronic device; a dielectric-filled opening having a first portion extending from the second sidewall to the third sidewall and having a second portion that extends from an end of the first portion and that is interposed between the second sidewall and a portion of the ground plane structures, wherein the portion of the ground plane structures is interposed between the second portion of the dielectric-filled opening and the third sidewall; and an antenna that includes a portion of the peripheral conductive housing structures. - View Dependent Claims (19, 20)
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Specification