Electronic devices having antennas with symmetric feeding

    公开(公告)号:US11088452B2

    公开(公告)日:2021-08-10

    申请号:US16146705

    申请日:2018-09-28

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with a phased antenna array. Each antenna in the array may include a patch element having first, second, third, and fourth positive antenna feed terminals. The first and second terminals may convey first signals with a first polarization. The third and fourth terminals may convey second signals with a second polarization. Phase shifting components such as phase shifting transmission line segments or phase shifter circuits may ensure that the first signals at the first terminal are out of phase with respect to the first signals at the second terminal and may ensure that the second signals at the third terminal are out of phase with respect to the second signals at the fourth terminal. This may allow antenna current density for both polarizations to be symmetrically distributed about a normal axis of the patch element.

    Electronic device with millimeter wave antenna arrays

    公开(公告)号:US10998616B2

    公开(公告)日:2021-05-04

    申请号:US16272932

    申请日:2019-02-11

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with wireless circuitry. The wireless circuitry may include one or more antennas. The antennas may include millimeter wave antenna arrays formed from arrays of patch antennas, dipole antennas or other millimeter wave antennas on millimeter wave antenna array substrates. Circuitry such as upconverter and downconverter circuitry may be mounted on the substrates. The upconverter and downconverter may be coupled to wireless communications circuitry such as a baseband processor circuit using an intermediate frequency signal path. The electronic device may have opposing front and rear faces. A display may cover the front face. A rear housing wall may cover the rear face. A metal midplate may be interposed between the display and rear housing wall. Millimeter wave antenna arrays may transmit and receive antenna signals through the rear housing wall.

    Electronic Devices with Dielectric Resonator Antennas

    公开(公告)号:US20210119338A1

    公开(公告)日:2021-04-22

    申请号:US17111131

    申请日:2020-12-03

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with a phased antenna array and a display cover layer. The phased antenna array may include a dielectric resonator antenna. The dielectric resonator antenna may include a dielectric resonating element embedded in a lower permittivity dielectric substrate. The substrate and the resonating element may be mounted to a flexible printed circuit. A slot may be formed in ground traces on the flexible printed circuit and aligned with the resonating element. The slot may excite resonant modes of the resonating element. The resonating element may convey corresponding radio-frequency signals through the cover layer. A dielectric matching layer may be interposed between the resonating element and the cover layer. If desired, the slot may radiate additional radio-frequency signals and the matching layer may have a tapered shape. Dielectric resonator antennas for covering different polarizations and frequencies may be interleaved across the array.

    Electronic devices having antenna module isolation structures

    公开(公告)号:US10957985B2

    公开(公告)日:2021-03-23

    申请号:US16146488

    申请日:2018-09-28

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with a phased antenna array controlled by phase and magnitude controllers within an integrated circuit. The array may be formed on antenna layers and the integrated circuit may be mounted to transmission line layers of a dielectric substrate. A ground plane may separate the transmission line layers from the antenna layers. A connector may be mounted to the surface of the transmission line layers and may be coupled to the integrated circuit using conductive traces. A passive resonator may be formed in the antenna layers and may include conductive structures that resonate at one-quarter of the effective wavelength of operation of the array to form an open circuit impedance for surface currents generated on the ground plane by the array. This may serve to block the surface currents from scattering at an edge of the ground plane and leaking onto the integrated circuit.

    Electronic Devices Having Millimeter Wave Ranging Capabilities

    公开(公告)号:US20210033714A1

    公开(公告)日:2021-02-04

    申请号:US17074259

    申请日:2020-10-19

    Applicant: Apple Inc.

    Abstract: An electronic device such as a wristwatch may be provided with a phased antenna array for conveying first signals at a first frequency between 10 GHz and 300 GHz and a non-millimeter wave antenna for conveying second signals at a second frequency below 10 GHz. The device may include conductive housing sidewalls and a display. Conductive structures in the display and the conductive housing sidewalls may define a slot element in the non-millimeter wave antenna. The phased antenna array may be mounted within the slot element, aligned with a spatial filter in the display, or aligned with a dielectric window in the conductive housing sidewalls. Control circuitry may process signals transmitted by the phased antenna array and a reflected version of the transmitted signals that has been received by the phased antenna array to detect a range between the device and an external object.

    Millimeter wave patch antennas
    77.
    发明授权

    公开(公告)号:US10777895B2

    公开(公告)日:2020-09-15

    申请号:US15650689

    申请日:2017-07-14

    Applicant: Apple Inc.

    Abstract: An electronic device may include a millimeter wave antenna having a ground plane, resonating element, feed, and parasitic element. The resonating element may include first, second, and third layer of traces that are shorted together. The second traces may be interposed between the first and third traces and the third traces may be interposed between the second traces and the parasitic. The third traces may have a width that is less than the widths of the second and third traces. The third traces and the parasitic may define a constrained volume having an associated cavity resonance that lies outside of a frequency band of interest. If desired, the resonating element may include a single layer of conductive traces having a grid of openings that disrupt impedance in a transverse direction, thereby mitigating the trapping of energy within the frequency band of interest between the resonating element and the parasitic.

    Millimeter wave antennas having isolated feeds

    公开(公告)号:US10727580B2

    公开(公告)日:2020-07-28

    申请号:US16036770

    申请日:2018-07-16

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with antenna structures that convey radio-frequency signals greater than 10 GHz. The antenna structures may include overlapping first and second patches. The first patch may include a hole. A transmission line for the second patch may include a conductive via extending through the hole. The via may be coupled to a first end of a trace. A second end of the trace may be coupled to a feed terminal on the second patch over an additional via. The hole may be located within a central region of the first patch to allow the via to pass through the hole without electromagnetically coupling to the first patch. If desired, adjustable impedance matching circuits may be used to couple selected impedances to the antenna feeds that help ensure that the first and second patch antennas are sufficiently isolated from each other.

    Wireless devices having spirally-distributed beam pointing angles

    公开(公告)号:US10720979B1

    公开(公告)日:2020-07-21

    申请号:US16510556

    申请日:2019-07-12

    Applicant: Apple Inc.

    Abstract: An electronic device may be provided with a phased antenna array, control circuitry, and a codebook. The control circuitry may control the phased antenna array to form a signal beam at a beam steering angle selected from a set of beam steering angles identified by the codebook. The set of beam steering angles may be evenly distributed along a two-dimensional or three-dimensional spiral path. The control circuitry may control the phased antenna array to sweep over the set of beam steering angles until external wireless equipment is found. Distributing the set of beam steering angles in this way may minimize the size of the codebook while allowing the phased antenna array to cover as much of its field of view as possible with satisfactory gain.

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