公开(公告)号：US11070300B2

公开(公告)日：2021-07-20

申请号：US16357184

申请日：2019-03-18

Applicant: Apple Inc.

Inventor： Aaron J. Cooper ,  Amin Tayebi ,  Breanna E. Bredesen ,  Carlo Di Nallo ,  Michael J. Williams ,  Nikolaj P. Kammersgaard ,  Qian Zhang ,  Tyler R. Roschuk

IPC: H04B17/10 ,  G01R29/10 ,  H01Q21/06 ,  H04B17/16

Abstract: An electronic device may be provided with wireless circuitry that is tested in a test system. The test system may include test probes. Circuitry under test may wirelessly transmit test signals. The test probes may receive the test signals at multiple locations. Circuitry may measure direct current (DC) voltages generated by the test probes and may convert the voltages to electric field magnitudes. A test host may process the electric field magnitudes to determine whether the circuitry under test exhibits a satisfactory radiation pattern. The test probes may include dielectric substrates and one or more dipole elements coupled to respective diodes. The dipole elements may include indium tin oxide (ITO) and may include first and second sets of orthogonal dipole elements. Transmission lines coupled to the dipole elements may include ITO and may form low pass filters that convert rectified voltages produced by the diodes into the DC voltages.

公开(公告)号：US20200304216A1

公开(公告)日：2020-09-24

申请号：US16357184

申请日：2019-03-18

Applicant: Apple Inc.

Inventor： Aaron J. Cooper ,  Amin Tayebi ,  Breanna E. Bredesen ,  Carlo Di Nallo ,  Michael J. Williams ,  Nikolaj P. Kammersgaard ,  Qian Zhang ,  Tyler R. Roschuk

IPC: H04B17/10 ,  H04B17/16 ,  H01Q21/06 ,  G01R29/10

Abstract: An electronic device may be provided with wireless circuitry that is tested in a test system. The test system may include test probes. Circuitry under test may wirelessly transmit test signals. The test probes may receive the test signals at multiple locations. Circuitry may measure direct current (DC) voltages generated by the test probes and may convert the voltages to electric field magnitudes. A test host may process the electric field magnitudes to determine whether the circuitry under test exhibits a satisfactory radiation pattern. The test probes may include dielectric substrates and one or more dipole elements coupled to respective diodes. The dipole elements may include indium tin oxide (ITO) and may include first and second sets of orthogonal dipole elements. Transmission lines coupled to the dipole elements may include ITO and may form low pass filters that convert rectified voltages produced by the diodes into the DC voltages.

公开(公告)号：US20190261509A1

公开(公告)日：2019-08-22

申请号：US16212453

申请日：2018-12-06

Applicant: Apple Inc.

Inventor： Kevin M. Froese ,  Qian Zhang ,  Paul Choiniere ,  Derek C. Krass

IPC: H05K1/03 ,  H05K1/18 ,  H01Q9/04 ,  H05K1/02

Abstract: Dielectric such as polyether ether ketone may be used in forming radio-frequency flexible printed circuits. Filler may be incorporated into the dielectric to adjust the coefficient of thermal expansion of the flexible printed circuit. One or more layers of the flexible printed circuit may be unfilled and one or more layers of the flexible printed circuit may be filled. Antennas may be formed from metal traces on the flexible printed circuit, metal electronic device housing structures, or other conductive structures. A transmission line on the flexible printed circuit may couple radio-frequency transceiver circuitry in an electronic device to an antenna. A flexible printed circuit may have a portion with enhanced bendability in a location that overlaps a bend region. The enhanced bendability region may have less filler than other portions of the flexible printed circuit.

公开(公告)号：US10957500B2

公开(公告)日：2021-03-23

申请号：US15211818

申请日：2016-07-15

Applicant: Apple Inc.

Inventor： Alejandro Lara Ascorra ,  Qian Zhang ,  Thai Q. La

IPC: H01H13/83 ,  G06F3/02 ,  G06F1/16

Abstract: Systems and methods for selective keyboard backlighting with reduced driver circuitry are provided. In one example embodiment, a method includes, inter alia, simultaneously controlling, with a control signal, an output of a first light emitting element that illuminates only one key of a plurality of keys of a keyboard and an output of a second light emitting element that illuminates only one key of the plurality of keys, and maintaining, with a current mirror circuit, uniformity between the output of the first light emitting element and the output of the second light emitting element.

公开(公告)号：US20180019081A1

公开(公告)日：2018-01-18

申请号：US15211818

申请日：2016-07-15

Applicant: Apple Inc.

Inventor： Alejandro Lara Ascorra ,  Qian Zhang ,  Thai Q. La

IPC: H01H13/83 ,  G06F3/02

CPC classification number: H01H13/83 ,  G06F1/1616 ,  G06F1/1662 ,  G06F3/0202 ,  H01H2219/039

Abstract: Systems and methods for selective keyboard backlighting with reduced driver circuitry are provided. In one example embodiment, a method includes, inter alia, simultaneously controlling, with a control signal, an output of a first light emitting element that illuminates only one key of a plurality of keys of a keyboard and an output of a second light emitting element that illuminates only one key of the plurality of keys, and maintaining, with a current mirror circuit, uniformity between the output of the first light emitting element and the output of the second light emitting element.