Tunable antenna with slot-based parasitic element
First Claim
1. An electronic device, comprising:
- a housing having peripheral conductive structures;
first and second dielectric gaps formed on opposing sides of the electronic device that divide the peripheral conductive housing structures;
an antenna resonating element formed from a segment of the peripheral conductive structures located between the first and second dielectric gaps;
an antenna ground;
an antenna feed having a first antenna feed terminal coupled to the segment and a second antenna feed terminal coupled to the antenna ground;
a parasitic antenna resonating element formed between the segment of the peripheral conductive structures and the antenna ground; and
an adjustable component that is coupled to the segment and the antenna ground and that overlaps the parasitic antenna resonating element.
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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 form a dual arm inverted-F antenna. The antenna may have a resonating element formed from portions of a peripheral conductive electronic device housing member and may have an antenna ground that is separated from the antenna resonating element by a gap. A short circuit path may bridge the gap. An antenna feed may be coupled across the gap in parallel with the short circuit path. Low band tuning may be provided using an adjustable inductor that bridges the gap. The antenna may have a slot-based parasitic antenna resonating element with a slot formed between portions of the peripheral conductive electronic device housing member and the antenna ground. An adjustable capacitor may bridge the slot to provide high band tuning.
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Citations
19 Claims
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1. An electronic device, comprising:
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a housing having peripheral conductive structures; first and second dielectric gaps formed on opposing sides of the electronic device that divide the peripheral conductive housing structures; an antenna resonating element formed from a segment of the peripheral conductive structures located between the first and second dielectric gaps; an antenna ground; an antenna feed having a first antenna feed terminal coupled to the segment and a second antenna feed terminal coupled to the antenna ground; a parasitic antenna resonating element formed between the segment of the peripheral conductive structures and the antenna ground; and an adjustable component that is coupled to the segment and the antenna ground and that overlaps the parasitic antenna resonating element. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An antenna, comprising:
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an antenna resonating element formed from a metal electronic device housing structure that has a first arm that resonates in a first frequency band and a second arm that resonates in a second frequency band that is greater than the first frequency band; an antenna ground that is separated from the antenna resonating element; a parasitic antenna resonating element that resonates in a third frequency band that is greater than the second frequency band; and an adjustable component that is coupled to the first arm and the antenna ground, that bridges and overlaps the parasitic antenna resonating element, and that is configured to adjust the first frequency band in which the first arm resonates. - View Dependent Claims (11, 12, 13)
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14. An electronic device, comprising:
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an antenna ground; an antenna resonating element formed from a metal electronic device housing structure that extends across a width of the electronic device, wherein the antenna resonating element has a low band arm that resonates in a first frequency band and a high band arm that resonates in a second frequency band that is greater than the first frequency band; an antenna feed having a first antenna feed terminal coupled to the antenna resonating element and a second antenna feed terminal coupled to the antenna ground; and a parasitic antenna resonating element formed between the low band arm and the antenna ground, wherein the parasitic antenna resonating element is indirectly fed by the antenna resonating element via near-field electromagnetic coupling. - View Dependent Claims (15, 16, 17, 18, 19)
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Specification