Antenna isolation for portable electronic devices
First Claim
1. Electronic device antenna structures in an electronic device, comprising:
- first, second, and third resonating elements aligned along a common axis and that are each connected to a respective ground plane portion, wherein the first and second resonating elements are fed using respective antenna feed terminals and form respective first and second antennas and wherein the third resonating element is not fed by any antenna feed terminals.
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Abstract
Portable electronic devices are provided with wireless circuitry that includes antennas and antenna isolation elements. The antennas may include antennas that have multiple arms and that are configured to handle communications in multiple frequency bands. The antennas may also include one or more antennas that are configured to handle communications in a single frequency band. The antennas may be coupled to different radio-frequency transceivers. For example, there may be first, second, and third antennas and first and second transceivers. The first and third antennas may be coupled to the first transceiver and the second antenna may be coupled to the second transceiver. The antenna isolation elements may be interposed between the antennas and may serve to reduce radio-frequency interference between the antennas. There may be a first antenna isolation element between the first and second antennas and a second antenna isolation element between the second and third antennas.
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Citations
19 Claims
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1. Electronic device antenna structures in an electronic device, comprising:
first, second, and third resonating elements aligned along a common axis and that are each connected to a respective ground plane portion, wherein the first and second resonating elements are fed using respective antenna feed terminals and form respective first and second antennas and wherein the third resonating element is not fed by any antenna feed terminals. - View Dependent Claims (2, 3, 4, 5, 6)
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7. An electronic device, comprising:
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first, second, and third resonating elements that are parallel to a common axis, wherein the first and second resonating elements are fed using respective antenna feed terminals and form respective first and second antennas and wherein the third resonating element is not fed by any antenna feed terminals; a first transmission line having a first positive conductor coupled to the antenna feed terminal of the first resonating element and a first ground conductor; and a second transmission line having a second positive conductor coupled to the antenna feed terminal of the second resonating element and a second ground conductor. - View Dependent Claims (8, 9, 10, 11, 12)
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13. An electronic device, comprising:
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first, second, and third resonating elements that are parallel to a common axis, wherein the first and second resonating elements are fed using respective antenna feed terminals and form respective first and second antennas and wherein the third resonating element is not fed by any antenna feed terminals; conductive housing structures that form at least part of a ground element for the first, second, and third resonating elements; a first transmission line having a first positive conductor coupled to the antenna feed terminal of the first resonating element and a first ground conductor coupled to the conductive housing structures; and a second transmission line having a second positive conductor coupled to the antenna feed terminal of the second resonating element and a second ground conductor coupled to the conductive housing structures. - View Dependent Claims (14, 15, 16, 17, 18, 19)
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Specification