Antenna system with receiver diversity and tunable matching circuit
First Claim
1. An electronic device, comprising:
- a housing having conductive structures that form an antenna ground and having peripheral conductive housing structures that run around at least some edges of the housing;
radio-frequency receiver circuitry;
an inverted-F antenna that is formed from the antenna ground and an inverted-F antenna resonating element that is separated from the antenna ground by an opening, wherein the inverted-F antenna resonating element is formed from a segment of the peripheral conductive housing structures that is located between first and second gaps in the peripheral conductive housing structures, a first antenna feed terminal is coupled to the segment, and a second antenna feed terminal is coupled to the antenna ground; and
an additional antenna, wherein the additional antenna is configured to transmit and receive radio-frequency signals in a plurality of cellular telephone bands, and wherein the receiver circuitry is configured to only receive radio-frequency signals in a subset of the plurality of cellular telephone bands over the inverted-F antenna.
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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. An electronic device may include a display mounted within a housing. A peripheral conductive member may run around the edges of the display and housing. Dielectric-filled gaps may divide the peripheral conductive member into individual segments. A ground plane may be formed within the housing from conductive housing structures, printed circuit boards, and other conductive elements. The ground plane and the segments of the peripheral conductive member may form antennas in upper and lower portions of the housing. The radio-frequency transceiver circuitry may implement receiver diversity using both the upper and lower antennas. The lower antenna may be used in transmitting signals. The upper antenna may be tuned using a tunable matching circuit.
44 Citations
20 Claims
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1. An electronic device, comprising:
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a housing having conductive structures that form an antenna ground and having peripheral conductive housing structures that run around at least some edges of the housing; radio-frequency receiver circuitry; an inverted-F antenna that is formed from the antenna ground and an inverted-F antenna resonating element that is separated from the antenna ground by an opening, wherein the inverted-F antenna resonating element is formed from a segment of the peripheral conductive housing structures that is located between first and second gaps in the peripheral conductive housing structures, a first antenna feed terminal is coupled to the segment, and a second antenna feed terminal is coupled to the antenna ground; and an additional antenna, wherein the additional antenna is configured to transmit and receive radio-frequency signals in a plurality of cellular telephone bands, and wherein the receiver circuitry is configured to only receive radio-frequency signals in a subset of the plurality of cellular telephone bands over the inverted-F antenna. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An electronic device, comprising:
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a housing having opposing first and second ends; a display mounted within the housing, wherein the display has four edges; peripheral conductive housing structures that run along the four edges of the display; an antenna ground that is formed at least partly from conductive portions of the housing; a first antenna that is formed from an antenna resonating element and the antenna ground, wherein the antenna resonating element is formed from a first segment of the peripheral conductive housing structures and is separated from the antenna ground by an opening, a first antenna feed terminal for the first antenna is coupled to the first segment, and a second antenna feed terminal for the first antenna is coupled to the antenna ground; a second antenna having an antenna resonating element that is formed from a second segment of the peripheral conductive housing structures and the antenna ground, wherein a first antenna feed terminal for the second antenna is coupled to the second segment and a second antenna feed terminal for the second antenna is coupled to the antenna ground; radio-frequency transceiver circuitry that transmits and receives radio-frequency antenna signals through the second antenna in a plurality of cellular telephone communications bands and that only receives radio-frequency antenna signals through the first antenna in a subset of the cellular telephone communications bands. - View Dependent Claims (11, 12, 13, 14)
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15. An electronic device, comprising:
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a housing having opposing upper and lower ends; a display mounted within the housing, wherein the display has four edges; peripheral conductive housing structures that run along the four edges of the display; at least two dielectric-filled gaps in the peripheral conductive housing structures that separate the peripheral conductive member into at least first and second respective segments; an antenna ground plane within the housing; a dual-arm inverted-F antenna that is formed from the antenna ground plane and an inverted-F antenna resonating element that is separated from the antenna ground plane by an opening and that has first and second arms that resonate in respective frequency bands, wherein the inverted-F antenna resonating element is formed from the first segment, a first antenna feed terminal is coupled to the first segment, and a second antenna feed terminal is coupled to the antenna ground plane at the upper end of the housing; a loop antenna having a resonating element that is formed from the second segment and the antenna ground plane at the lower end of the housing, wherein the resonating element of the loop antenna extends between a third antenna feed terminal coupled to the antenna ground plane and a fourth antenna feed terminal coupled to the second segment; and radio-frequency transceiver circuitry that is configured to transmit and receive radio-frequency antenna signals in a plurality of radio-frequency bands through the loop antenna and that is configured to receive radio-frequency antenna signals in only a subset of the plurality of radio-frequency bands through the dual-arm inverted-F antenna without transmitting any radio-frequency signals through the dual-arm inverted-F antenna. - View Dependent Claims (16, 17, 18, 19, 20)
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Specification