Antenna system with return path tuning and loop element
    12.
    发明授权
    Antenna system with return path tuning and loop element 有权
    具有返回路径调谐和回路元件的天线系统

    公开(公告)号:US09444130B2

    公开(公告)日:2016-09-13

    申请号:US13860396

    申请日:2013-04-10

    Applicant: Apple Inc.

    CPC classification number: H01Q1/243 H01Q7/00 H01Q9/0442

    Abstract: Electronic devices may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may include a dual arm inverted-F antenna resonating element and an antenna ground. An antenna feed may be coupled between the inverted-F antenna resonating element and the antenna ground. An adjustable component such as an adjustable inductor may be coupled between the inverted-F antenna resonating element and the antenna ground in parallel with the antenna feed. The adjustable component may be operable in multiple states such as an open circuit state, a short circuit state, and a state in which the adjustable component exhibits a non-zero inductance. Antenna bandwidth can be broadened by coupling a loop antenna resonating element across the antenna feed. A portion of the antenna ground may overlap the loop antenna resonating element to further enhance antenna bandwidth.

    Abstract translation: 电子设备可以包括射频收发器电路和天线结构。 天线结构可以包括双臂倒F天线谐振元件和天线接地。 天线馈送可以耦合在倒F天线谐振元件和天线接地之间。 诸如可调节电感器的可调节部件可以与天线馈送并联连接在倒F天线谐振元件和天线接地之间。 可调组件可以在诸如开路状态,短路状态和可调部件呈现非零电感的状态的多种状态下工作。 通过将环形天线谐振元件耦合到天线馈电上,可以拓宽天线带宽。 天线接地的一部分可能与环形天线谐振元件重叠,以进一步增强天线带宽。

    Electronic device with multiple antenna feeds and adjustable filter and matching circuitry
    13.
    发明授权
    Electronic device with multiple antenna feeds and adjustable filter and matching circuitry 有权
    具有多个天线馈电和可调节滤波器和匹配电路的电子设备

    公开(公告)号:US09166634B2

    公开(公告)日:2015-10-20

    申请号:US13888110

    申请日:2013-05-06

    Applicant: Apple Inc.

    CPC classification number: H04B1/0458 H04B1/18

    Abstract: Electronic devices may include antenna structures. The antenna structures may form an antenna having first and second feeds at different locations. A first transceiver may be coupled to the first feed using a first circuit. A second transceiver may be coupled to the second feed using a second circuit. The first and second feeds may be isolated from each other using the first and second circuits. The second circuit may have a notch filter that isolates the second feed from the first feed at operating frequencies associated with the first transceiver. The first circuit may include an adjustable component such as an adjustable capacitor. The adjustable component may be placed in different states depending on the mode of operation of the second transceiver to ensure that the first feed is isolated from the second feed.

    Abstract translation: 电子设备可以包括天线结构。 天线结构可以形成在不同位置具有第一和第二馈送的天线。 第一收发器可以使用第一电路耦合到第一馈送。 第二收发器可以使用第二电路耦合到第二馈送。 第一和第二馈送可以使用第一和第二电路彼此隔离。 第二电路可以具有陷波滤波器,其在与第一收发器相关联的工作频率下将第二馈送与第一馈送隔离。 第一电路可以包括诸如可调电容器的可调节部件。 取决于第二收发器的操作模式,可调整部件可以被置于不同的状态,以确保第一进给与第二进给隔离。

    Methods for validating radio-frequency test stations
    14.
    发明授权
    Methods for validating radio-frequency test stations 有权
    验证射频测试站的方法

    公开(公告)号:US09164159B2

    公开(公告)日:2015-10-20

    申请号:US13715648

    申请日:2012-12-14

    Applicant: Apple Inc.

    CPC classification number: G01R35/007 G01R31/2822 G01R31/2879 G01R31/3191

    Abstract: A manufacturing system for assembling wireless electronic devices is provided. The manufacturing system may include test stations for testing the radio-frequency performance of components that are to be assembled within the electronic devices. A reference test station may be calibrated using calibration coupons having known radio-frequency characteristics. The calibration coupons may include transmission line structures. The reference test station may measure verification standards to establish baseline measurement data. The verification standards may include circuitry having electrical components with given impedance values. Many verification coupons may be measured to enable testing for a wide range of impedance values. Test stations in the manufacturing system may subsequently measure the verification standards to generate test measurement data. The test measurement data may be compared to the baseline measurement data to characterize the performance of the test stations to ensure consistent test measurements across the test stations.

    Abstract translation: 提供了一种用于组装无线电子设备的制造系统。 制造系统可以包括用于测试要在电子设备内组装的组件的射频性能的测试站。 可以使用具有已知射频特性的校准试样来校准参考测试台。 校准试样可以包括传输线结构。 参考测试站可以测量验证标准以建立基线测量数据。 验证标准可以包括具有给定阻抗值的电气部件的电路。 可以测量许多验证券,以测试宽范围的阻抗值。 制造系统中的测试台随后可以测量验证标准以产生测试测量数据。 可以将测试测量数据与基线测量数据进行比较,以表征测试站的性能,以确保跨越测试站的一致的测试测量。

    PASSIVE ACTIVE HYBRID LC FILTER
    17.
    发明公开

    公开(公告)号:US20230402986A1

    公开(公告)日:2023-12-14

    申请号:US17840093

    申请日:2022-06-14

    Applicant: Apple Inc.

    CPC classification number: H03H7/0115 H03H7/075 H03H7/1741 H04B1/18 H03H11/12

    Abstract: This disclosure is directed to filtering in a transceiver of an electronic device. In some instances, active analog filters may be deployed in the transceiver of the electronic device to achieve greater linearity and/or reduce noise in the transceiver. However, as signal bandwidth grows increasingly larger, an active analog filter may consume excessive power. To remedy the excessive power consumption, a passive ladder LC filter may be used. Some LC ladder filters may include a limited quality factor (Q), which may lead to undesirable effects in the transceiver (e.g., voltage droop). To address these undesirable effects, certain components in the LC ladder filter may be relocated from an input port to a feedback chain of an amplifier coupled to the LC ladder filter. The new structure may enable components in the LC ladder filter to be tuned without causing additional voltage droop across the LC ladder filter.

    Electronic devices having shared antenna structures and split return paths

    公开(公告)号:US10804617B2

    公开(公告)日:2020-10-13

    申请号:US15700618

    申请日:2017-09-11

    Applicant: Apple Inc.

    Abstract: Antenna structures at a given end of an electronic device may include antenna structures that are shared between multiple antennas. The device 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. A short circuit path may bridge the gap. The short circuit path may be a split return path coupled between a first point on the inverted-F antenna resonating element arm and second and third points on the antenna ground. The electronic device may include an additional antenna that includes the antenna ground and metal traces that form an antenna resonating element arm. The antenna resonating element arm of the additional antenna may be parasitically coupled to the inverted-F antenna resonating element and a portion of the split return path.

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