Methods and Apparatus for Performing Passive Antenna Testing with Active Antenna Tuning Device Control
    41.
    发明申请
    Methods and Apparatus for Performing Passive Antenna Testing with Active Antenna Tuning Device Control 有权
    用有源天线调谐装置控制进行被动天线测试的方法和装置

    公开(公告)号:US20140179239A1

    公开(公告)日:2014-06-26

    申请号:US13725769

    申请日:2012-12-21

    Applicant: APPLE INC.

    Abstract: A wireless electronic device may contain at least one adjustable antenna tuning element for use in tuning the operating frequency range of the device. The antenna tuning element may include radio-frequency switches, continuously/semi-continuously adjustable components such as tunable resistors, inductors, and capacitors, and other load circuits that provide desired impedance characteristics. A test system that is used for performing passive radio-frequency (RF) testing on antenna tuning elements in partially assembled devices is provided. The test system may include an RF tester and a test host. The tester may be used to gather scattering parameter measurements from the antenna tuning element. The test host may be used to ensure that power and appropriate control signals are being supplied to the antenna tuning element so that the antenna tuning element is placed in desired tuning states during testing.

    Abstract translation: 无线电子设备可以包含用于调整设备的工作频率范围的至少一个可调天线调谐元件。 天线调谐元件可以包括射频开关,连续/半连续可调组件,例如可调电阻器,电感器和电容器,以及提供所需阻抗特性的其它负载电路。 提供了一种用于对部分组装的设备中的天线调谐元件进行无源射频(RF)测试的测试系统。 测试系统可以包括RF测试器和测试主机。 测试仪可用于从天线调谐元件收集散射参数测量值。 可以使用测试主机来确保向天线调谐元件提供功率和适当的控制信号,使得天线调谐元件在测试期间被置于期望的调谐状态。

    Electronic Device Wide Band Antennas

    公开(公告)号:US20210098869A1

    公开(公告)日:2021-04-01

    申请号:US16584159

    申请日:2019-09-26

    Applicant: Apple Inc.

    Abstract: An electronic device may have a housing with metal sidewalls. One of the metal sidewalls may have an opening. The electronic device may have a speaker module that has a speaker housing member. Conductive structures on the speaker housing member may have an opening that forms a slot element. The opening of the metal sidewall may be aligned with slot element. The slot element and an interior cavity of the speaker housing member may form a cavity-backed slot antenna. An antenna feed structure may be disposed at the opening of the speaker housing member. An antenna feed may be directly coupled to the antenna feed structure. The antenna feed structure may indirectly feed the slot antenna resonating element by capacitive coupling. A sealing member may be disposed at the opening of the metal sidewall.

    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.

    Dynamically adjustable antennas for wearable devices

    公开(公告)号:US10484112B2

    公开(公告)日:2019-11-19

    申请号:US15442463

    申请日:2017-02-24

    Applicant: Apple Inc.

    Abstract: An electronic device such as a wristwatch may include a housing with a dielectric rear wall. Wireless circuitry in the device may include an antenna formed on or over the rear wall. Matching circuitry may match the impedance of the antenna to the rest of the wireless circuitry. Processing circuitry may gather receive signal strength information and/or phase and magnitude information from radio-frequency signals received through the rear wall. The processing circuitry may track the position of the device and accumulate user statistics over time. The processing circuitry may determine whether changes in loading of the antenna through the dielectric rear housing wall have occurred based on the receive signal strength information, user statistics, and/or phase and magnitude information. If a change is detected, the processing circuitry may adjust the matching circuitry to mitigate any potential antenna detuning as a result of the change.

    Electronic device having multiband antenna with embedded filter

    公开(公告)号:US10290941B2

    公开(公告)日:2019-05-14

    申请号:US15008130

    申请日:2016-01-27

    Applicant: Apple Inc.

    Abstract: An electronic device may have a display in a housing with a metal wall. An antenna may have an antenna ground formed from the wall and an antenna resonating element. Transceiver circuitry may be coupled to an antenna feed that extends between the antenna resonating element and the antenna ground. A return path may extend between the antenna resonating element and the antenna ground in parallel with the feed. The antenna resonating element may have segments that are coupled by a frequency dependent filter. At a first frequency, the filter may have a low impedance so that the antenna resonating element has a first effectively length. At a second frequency that is greater than the first frequency, the filter may have a high impedance so that the antenna resonating element has a second effective length that is shorter than the first effective length.

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