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    Methods and apparatus for testing electronic devices under specified radio-frequency voltage and current stress
    71.
    发明授权
    Methods and apparatus for testing electronic devices under specified radio-frequency voltage and current stress 有权
    在指定的射频电压和电流应力下测试电子设备的方法和装置

    公开(公告)号：US08971874B2

    公开(公告)日：2015-03-03

    申请号：US13873048

    申请日：2013-04-29

    Applicant: Apple Inc.

    Inventor： Liang Han ,  Matthew A. Mow ,  James G. Judkins ,  Thomas E. Biedka ,  Ming-Ju Tsai ,  Robert W. Schlub

    IPC: H04W24/00 ,  H04W24/06

    CPC classification number: H04W24/06 ,  H03F1/565 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/111 ,  H03F2200/222 ,  H04B17/0085 ,  Y02D70/00 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/23

    Abstract: Test systems for characterizing devices under test (DUTs) are provided. A test system for testing a DUT in a shunt configuration may include a signal generator and a matching network that is coupled between the signal generator and the DUT and that is optimized to apply desired voltage/current stress to the DUT with reduced source power. The matching network may be configured to provide matching and desired stress levels at two or more frequency bands. In another suitable embodiment, a test system for testing a DUT in a series configuration may include a signal generator, an input matching network coupled between the DUT and a first terminal of the DUT, and an output matching network coupled between the DUT and a second terminal of the DUT. The input and output matching network may be optimized to apply desired voltage/current stress to the DUT with reduced source power.

    Abstract translation: 提供了用于表征被测设备（DUT）的测试系统。 用于在分流配置中测试DUT的测试系统可以包括信号发生器和耦合在信号发生器和DUT之间的匹配网络，并且被优化以在具有降低的源功率的DUT上施加期望的电压/电流应力。 匹配网络可以被配置为在两个或更多个频带处提供匹配和期望的应力水平。 在另一个合适的实施例中，用于测试串联配置中的DUT的测试系统可以包括信号发生器，耦合在DUT和DUT的第一端之间的输入匹配网络，以及耦合在DUT和第二个DUT之间的输出匹配网络 DUT的端子。 可以优化输入和输出匹配网络，以便以较低的源功率将所需的电压/电流应力施加到DUT。

    Electronic Device Antenna With Multiple Feeds for Covering Three Communications Bands
    72.
    发明申请
    Electronic Device Antenna With Multiple Feeds for Covering Three Communications Bands 有权
    电子装置天线多重馈电覆盖三个通信带

    公开(公告)号：US20140333495A1

    公开(公告)日：2014-11-13

    申请号：US13889987

    申请日：2013-05-08

    Applicant: APPLE INC.

    Inventor： Enrique Ayala Vazquez ,  Hongfei Hu ,  Mattia Pascolini ,  Matthew A. Mow ,  Ming-Ju Tsai ,  Robert W. Schlub ,  Dean F. Darnell ,  Yuehui Ouyang ,  Nanbo Jin ,  Liang Han ,  David Pratt

    IPC: H01Q5/00 ,  H01Q9/06

    CPC classification number: H01Q9/06 ,  H01Q1/243 ,  H01Q1/48 ,  H01Q5/328 ,  H01Q5/35 ,  H01Q5/371 ,  H01Q9/0442 ,  H01Q9/27 ,  H01Q9/42 ,  H01Q13/10

    Abstract: Electronic devices may be provided that include radio-frequency transceiver circuitry and antennas. An antenna may be formed from an antenna resonating element and an antenna ground. The antenna resonating element may have a shorter portion that resonates at higher communications band frequencies and a longer portion that resonates at lower communications band frequencies. An extended portion of the antenna ground may form an inverted-F antenna resonating element portion of the antenna resonating element. The antenna resonating element may be formed from a peripheral conductive electronic device housing structure that is separated from the antenna ground by an opening. A first antenna feed may be coupled between the peripheral conductive electronic device housing structures and the antenna ground across the opening. A second antenna feed may be coupled to the inverted-F antenna resonating element portion of the antenna resonating element.

    Abstract translation: 可以提供包括射频收发器电路和天线的电子设备。 天线可以由天线谐振元件和天线接地形成。 天线谐振元件可以具有在较高通信频带频率下谐振的较短部分和在较低通信频带频率下谐振的较长部分。 天线接地的延伸部分可以形成天线谐振元件的倒F天线谐振元件部分。 天线谐振元件可以由外部导电电子器件外壳结构形成，该外壳导电电子器件壳体结构通过开口与天线接地分开。 第一天线馈电可以耦合在外围导电电子器件外壳结构和穿过开口的天线接地之间。 第二天线馈送可以耦合到天线谐振元件的倒F天线谐振元件部分。

    Electronic device antennas including conductive display structures
    73.
    发明授权
    Electronic device antennas including conductive display structures 有权

    公开(公告)号：US10581153B2

    公开(公告)日：2020-03-03

    申请号：US15701250

    申请日：2017-09-11

    Applicant: Apple Inc.

    Inventor： Jennifer M. Edwards ,  Yijun Zhou ,  Yiren Wang ,  Hao Xu ,  Ming-Ju Tsai ,  Mattia Pascolini

    IPC: H01Q1/24 ,  H01Q1/48 ,  H01Q1/44 ,  H01Q23/00 ,  H05K5/02 ,  H05K5/00 ,  H04M1/02 ,  H01Q9/42

    Abstract: An electronic device may be provided with wireless circuitry and control circuitry. The wireless circuitry may include multiple antennas and transceiver circuitry. An antenna in the electronic device may have an inverted-F antenna resonating element formed from portions of a peripheral conductive electronic device housing structure and may have an antenna ground that is separated from the antenna resonating element by a gap. The antenna ground for the antenna may include a conductive frame for the display. The conductive frame may have a first portion that is separated from the antenna resonating element arm by a first distance and a second portion that is separated from the antenna resonating element arm by a second distance that is less than the first distance. The second portion may be configured to form a distributed impedance matching capacitance with the antenna resonating element arm.

    Antennas having symmetrical switching architecture
    74.
    发明授权
    Antennas having symmetrical switching architecture 有权

    公开(公告)号：US10511083B2

    公开(公告)日：2019-12-17

    申请号：US15429597

    申请日：2017-02-10

    Applicant: Apple Inc.

    Inventor： Xu Han ,  Liang Han ,  Matthew A. Mow ,  Ming-Ju Tsai

    IPC: H01Q9/30 ,  H01Q1/24 ,  H01Q19/02

    Abstract: An electronic device may include wireless circuitry with antennas. An antenna resonating element arm for an antenna may be formed from conductive housing structures running along the edges of the device. The antenna may have first and second antenna feeds and multiple adjustable components that bridge a slot between the antenna resonating element and an antenna ground. Control circuitry may control the adjustable components and selectively activate one of the first and second feeds at a given time to place the antenna in first, second, or third operating modes. The control circuitry may determine which operating mode to use based on information indicative of the operating environment of the device. By switching between the operating modes, the control circuitry may shift current hot spots across the length of the resonating element arm to ensure satisfactory performance of the antenna in a variety of operating conditions.

    Antennas having symmetrical switching architecture
    75.
    发明授权
    Antennas having symmetrical switching architecture 有权

    公开(公告)号：US10468756B2

    公开(公告)日：2019-11-05

    申请号：US15940772

    申请日：2018-03-29

    Applicant: Apple Inc.

    Inventor： Xu Han ,  Liang Han ,  Matthew A. Mow ,  Ming-Ju Tsai

    IPC: H01Q9/42 ,  H01Q1/24 ,  H01Q13/10 ,  H01Q21/28 ,  H01Q5/328 ,  H01Q5/335 ,  H01Q9/30 ,  H01Q19/02

    Abstract: An electronic device may include wireless circuitry with antennas. An antenna resonating element arm for an antenna may be formed from conductive housing structures running along the edges of the device. The antenna may have first and second antenna feeds and multiple adjustable components that bridge a slot between the antenna resonating element and an antenna ground. Control circuitry may control the adjustable components and selectively activate one of the first and second feeds at a given time to place the antenna in first, second, or third operating modes. The control circuitry may determine which operating mode to use based on information indicative of the operating environment of the device. By switching between the operating modes, the control circuitry may shift current hot spots across the length of the resonating element arm to ensure satisfactory performance of the antenna in a variety of operating conditions.

    Electronic device antennas having multiple operating modes
    76.
    发明授权
    Electronic device antennas having multiple operating modes 有权

    公开(公告)号：US10305453B2

    公开(公告)日：2019-05-28

    申请号：US15700580

    申请日：2017-09-11

    Applicant: Apple Inc.

    Inventor： Jennifer M. Edwards ,  Yijun Zhou ,  Yiren Wang ,  Hao Xu ,  Ming-Ju Tsai ,  Victor C. Lee ,  Liang Han ,  Matthew A. Mow ,  Mattia Pascolini

    IPC: H03J1/00 ,  H03J7/18 ,  H04B7/12

    Abstract: An electronic device may be provided with wireless circuitry and control circuitry. The wireless circuitry may include an antenna with an inverted-F antenna resonating element formed from portions of a peripheral conductive electronic device housing structure and may have an antenna ground that is separated from the antenna resonating element by a gap. The antenna may include a first adjustable component coupled between the antenna resonating element arm and the antenna ground on a first side of the antenna feed and a second adjustable component coupled between the antenna resonating element arm and the antenna ground on a second side of the antenna feed. Control circuitry in the electronic device may adjust the first and second adjustable components between a first tuning mode, a second tuning mode, and a third tuning mode.

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