Electronic device with balanced-fed satellite communications antennas
First Claim
1. An electronic device, comprising:
- ground structures;
balance-fed dipole antenna structures that are not electrically connected to any of the ground structures and that receive satellite communications signals, wherein the balance-fed dipole antenna structures comprise a conductive path and a first antenna resonating element arm that comprises a plurality of antenna resonating element arm portions, the conductive path being connected to a given antenna resonating element arm portion that is located at a distance from the ground structures that is greater than each other antenna resonating element arm portion of the plurality of antenna resonating element arm portions; and
radio-frequency receiver circuitry that processes the received satellite communications signals.
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Accused Products
Abstract
An electronic device may include balance-fed antenna structures that do not have direct paths to ground. The antenna structures may serve as a Global Positioning System (GPS) antenna and may have a dipole structure having a first and second antenna resonating element arms. The antenna structures may include a conductive path that conveys antenna signals between a first feed terminal on the first antenna resonating element arm and a transmission line. The conductive path may overlap with the second antenna resonating element arm such that current flow through the conductive path induces corresponding current flow in the second antenna resonating element arm. The antenna structures may include an impedance matching short-circuit stub path that couples the first antenna resonating element arm to the second antenna resonating element arm. Choke inductors may be used to help block indirect paths from the antenna structures to ground through adjacent circuitry.
13 Citations
19 Claims
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1. An electronic device, comprising:
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ground structures; balance-fed dipole antenna structures that are not electrically connected to any of the ground structures and that receive satellite communications signals, wherein the balance-fed dipole antenna structures comprise a conductive path and a first antenna resonating element arm that comprises a plurality of antenna resonating element arm portions, the conductive path being connected to a given antenna resonating element arm portion that is located at a distance from the ground structures that is greater than each other antenna resonating element arm portion of the plurality of antenna resonating element arm portions; and radio-frequency receiver circuitry that processes the received satellite communications signals. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. Antenna structures, comprising:
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a first antenna resonating element arm; a second antenna resonating element arm; a first conductive path that is coupled to a first feed terminal on the first antenna resonating element arm and overlaps the second antenna resonating element arm, wherein a second feed terminal on the second antenna resonating element arm is indirectly fed by the conductive path; a camera housing; a flexible circuit substrate on which the camera housing is mounted; and a second conductive path on the flexible circuit substrate that is coupled to the camera housing. - View Dependent Claims (14, 15, 16)
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17. An electronic device, comprising:
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a balance-fed radio-frequency antenna; ground structures; circuitry that is coupled to the ground structures and adjacent to the balance-fed radio-frequency antenna; and at least one choke inductor that is coupled between the circuitry and the ground structures. - View Dependent Claims (18, 19)
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Specification