Tunable antenna systems
First Claim
1. An electronic device having a periphery and an exterior, comprising:
- a display;
radio-frequency transceiver circuitry;
an antenna having an antenna feed;
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 display, wherein the peripheral conductive housing structures extend along at least two external surfaces of the electronic device at the exterior of the electronic device, and the peripheral conductive housing structures include a portion that forms at least part of the antenna;
storage and processing circuitry; and
an adjustable electrical component that has at least one terminal that is electrically coupled to the peripheral conductive housing structures and that has a control terminal that receives control signals from the storage and processing circuitry that adjust frequency response in the antenna.
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Accused Products
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.
78 Citations
19 Claims
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1. An electronic device having a periphery and an exterior, comprising:
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a display; radio-frequency transceiver circuitry; an antenna having an antenna feed; 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 display, wherein the peripheral conductive housing structures extend along at least two external surfaces of the electronic device at the exterior of the electronic device, and the peripheral conductive housing structures include a portion that forms at least part of the antenna; storage and processing circuitry; and an adjustable electrical component that has at least one terminal that is electrically coupled to the peripheral conductive housing structures and that has a control terminal that receives control signals from the storage and processing circuitry that adjust frequency response in the antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. An electronic device having a periphery, 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; an antenna formed from at least a portion of the peripheral conductive housing structures and a portion of the ground plane structures, wherein a signal feed terminal for the antenna is coupled to the portion of the peripheral conductive housing structures and the portion of the peripheral conductive housing structures is separated from the ground plane structures by a dielectric-filled opening; an adjustable electronic component that bridges the dielectric-filled opening; and storage and processing circuitry that provides control signals to a control input of the adjustable electronic component to tune a frequency response of the antenna. - View Dependent Claims (12, 13, 14, 15, 16)
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17. 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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a ground plane that extends across the width of the device; peripheral conductive housing structures that run along the periphery of the electronic device and surround the ground plane; an antenna formed from at least a portion of the peripheral conductive housing structures and a portion of the ground plane; a dielectric-filled opening between the portion of the peripheral conductive housing structures and the ground plane, wherein the dielectric-filled opening comprises a first portion having a first longitudinal axis that extends across the width of the electronic device and a second portion having a second longitudinal axis that extends parallel to the length of the electronic device; an adjustable electronic component coupled across the second portion of the dielectric-filled opening that is configured to tune a resonant frequency of the antenna; and storage and processing circuitry that provides control signals to a control terminal of the adjustable electronic component to tune the resonant frequency of the antenna. - View Dependent Claims (18, 19)
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Specification