公开(公告)号：US20160097833A1

公开(公告)日：2016-04-07

申请号：US14506123

申请日：2014-10-03

Applicant: Apple Inc.

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

IPC: G01R35/00 ,  G01R29/08 ,  H01Q1/24

CPC classification number: G01R35/005 ,  G01R29/0878 ,  H01Q1/243 ,  H01Q9/42 ,  H01Q13/10 ,  H04B17/103 ,  H04B17/14

Abstract: An electronic device may have control circuitry that uses a reflectometer to measure antenna impedance during operation. The reflectometer may have a directional coupler that is coupled between radio-frequency transceiver circuitry and an antenna. A calibration circuit may be coupled between the directional coupler and the antenna. The calibration circuit may have a first port coupled to the antenna, a second port coupled to the directional coupler, and a third port that is coupled to a calibration resistance. The reflectometer may have terminations of identical impedance that are coupled to ground. Switching circuitry in the reflectometer may be used to route signals from the directional coupler to a feedback receiver for measurement by the control circuitry or to ground through the terminations. Calibrated antenna reflection coefficient measurements may be used in dynamically adjusting the antenna.

Abstract translation: 电子设备可以具有使用反射计在操作期间测量天线阻抗的控制电路。 反射计可以具有耦合在射频收发器电路和天线之间的定向耦合器。 校准电路可以耦合在定向耦合器和天线之间。 校准电路可以具有耦合到天线的第一端口，耦合到定向耦合器的第二端口和耦合到校准电阻器的第三端口。 反射计可具有与地耦合的具有相同阻抗的终端。 反射计中的开关电路可用于将来自定向耦合器的信号路由到反馈接收器，用于由控制电路进行测量或通过终端进行接地。 校准的天线反射系数测量可用于动态调整天线。

公开(公告)号：US20150341073A1

公开(公告)日：2015-11-26

申请号：US14283039

申请日：2014-05-20

Applicant: Apple Inc.

Inventor： Enrique Ayala Vazquez ,  Hongfei Hu ,  Mattia Pascolini ,  Yuehui Ouyang ,  Salih Yarga ,  Yijun Zhou ,  Erdinc lrci ,  Jayesh Nath ,  Ming-Ju Tsai ,  Matthew A. Mow ,  Liang Han ,  James G. Judkins ,  Robert W. Schlub

IPC: H04B1/40

CPC classification number: H04B1/40 ,  H04B1/0458 ,  H04B1/18

Abstract: An electronic device may be provided with wireless circuitry. Control circuitry may be used to adjust the wireless circuitry. The wireless circuitry may include an antenna that is tuned using tunable components. The control circuitry may gather information on the current operating mode of the. electronic device, sensor data from a proximity sensor, accelerometer, microphone, and other sensors, antenna impedance information for the antenna, and information on the use of connectors in the electronic device. Based on this gathered data, the control circuitry can adjust the tunable components to compensate for antenna detuning due to loading from nearby external objects, may adjust transmit power levels, and may make other wireless circuit adjustments.

Abstract translation: 电子设备可以设置有无线电路。 控制电路可用于调整无线电路。 无线电路可以包括使用可调组件调谐的天线。 控制电路可以收集关于当前操作模式的信息。 电子设备，来自接近传感器的传感器数据，加速度计，麦克风和其他传感器，用于天线的天线阻抗信息，以及关于在电子设备中使用连接器的信息。 基于收集的数据，控制电路可以调整可调组件以补偿由于来自附近的外部物体的负载引起的天线失谐，可以调整发射功率电平，并且可以进行其他无线电路调整。

公开(公告)号：US20150255869A1

公开(公告)日：2015-09-10

申请号：US14719223

申请日：2015-05-21

Applicant: Apple Inc.

Inventor： Robert S. Sorensen ,  Qingxiang Li ,  Matthew A. Mow ,  Jinku Kim

IPC: H01Q5/314 ,  H01Q23/00 ,  H04B1/40 ,  H01Q7/00

CPC classification number: H01Q5/314 ,  H01Q5/328 ,  H01Q5/335 ,  H01Q7/005 ,  H01Q23/00 ,  H03J3/20 ,  H03J2200/11 ,  H04B1/40

Abstract: An electronic device may include an adjustable power supply, at least one antenna, and associated antenna tuning circuitry. The antenna tuning circuitry may be an integral part of the antenna and may include a control circuit and at least one tunable element. The tunable 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. The power supply may provide power supply voltage signals to the antenna tuning circuitry via inductive coupling. The power supply voltage signals may be modulated according to a predetermined lookup table during device startup so that the control circuit is configured to generate desired control signals. These control signals adjust the tunable element so that the antenna can support wireless operation in desired frequency bands.

Abstract translation: 电子设备可以包括可调电源，至少一个天线和相关联的天线调谐电路。 天线调谐电路可以是天线的组成部分，并且可以包括控制电路和至少一个可调谐元件。 可调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。 电源可以通过电感耦合向天线调谐电路提供电源电压信号。 在设备启动期间，可以根据预定的查找表来调制电源电压信号，使得控制电路被配置为产生期望的控制信号。 这些控制信号调节可调谐元件，使天线能够支持所需频带的无线操作。

公开(公告)号：US08995926B2

公开(公告)日：2015-03-31

申请号：US13629414

申请日：2012-09-27

Applicant: Apple Inc.

Inventor： Matthew A. Mow ,  Thomas E. Biedka ,  Ming-Ju Tsai ,  Liang Han ,  Xu Han ,  Anand Lakshmanan ,  Nanbo Jin ,  Hongfei Hu ,  Dean F. Darnell ,  Joshua G. Nickel ,  Jayesh Nath ,  Yijun Zhou ,  Hao Xu ,  Yuehui Ouyang ,  Nirali Shah ,  Mattia Pascolini ,  Robert W. Schlub ,  Ruben Caballero

IPC: H04B17/00 ,  H04W24/00 ,  H04W24/06

CPC classification number: H04W24/08 ,  H04B17/318 ,  H04B17/345 ,  H04W24/06

Abstract: Radio frequency test systems for characterizing antenna performance in various radio coexistence scenarios are provided. In one suitable arrangement, a test system may be used to perform passive radio coexistence characterization. During passive radio coexistence characterization, at least one signal generator may be used to feed aggressor signals directly to antennas within an electronic device under test (DUT). The aggressor signals may generate undesired interference signals in a victim frequency band, which can then be received and analyzed using a spectrum analyzer. During active radio coexistence characterization, at least one radio communications emulator may be used to communicate with a DUT via a first test antenna. While the DUT is communicating with the at least one radio communications emulator, test signals may also be conveyed between DUT 10 and a second test antenna. Test signals conveyed through the second test antenna may be used in obtaining signal interference level measurements.

Abstract translation: 提供了用于在各种无线电共存场景中表征天线性能的射频测试系统。 在一种合适的布置中，可以使用测试系统来执行被动无线电共存表征。 在被动无线电共存表征期间，可以使用至少一个信号发生器来将攻击者信号直接馈送到被测电子设备（DUT）内的天线。 攻击者信号可能在受害频段中产生不期望的干扰信号，然后使用频谱分析仪接收和分析。 在有源无线电共存表征期间，可以使用至少一个无线电通信仿真器来经由第一测试天线与DUT进行通信。 当DUT正在与至少一个无线电通信仿真器进行通信时，也可以在DUT 10和第二测试天线之间传送测试信号。 通过第二测试天线传送的测试信号可用于获得信号干扰电平测量。

公开(公告)号：US20140333496A1

公开(公告)日：2014-11-13

申请号：US13890013

申请日：2013-05-08

Applicant: Apple Inc.

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

IPC: H01Q5/00

CPC classification number: H01Q5/30 ,  H01Q1/243 ,  H01Q5/321 ,  H01Q5/378 ,  H01Q9/0421

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. The resonating element may be formed from a peripheral conductive electronic device housing structure that is separated from the antenna ground by an opening. A parasitic monopole antenna resonating element or parasitic loop antenna resonating element may be located in the opening. Antenna tuning in the higher communications band may be implemented using an adjustable inductor in the parasitic element. Antenna tuning in the lower communications band may be implemented using an adjustable inductor that couples the antenna resonating element to the antenna ground.

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。 谐振元件可以由外部导电电子器件外壳结构形成，该外壳由天线与开口隔开。 寄生单极天线谐振元件或寄生环形天线谐振元件可以位于开口中。 可以使用寄生元件中的可调电感器来实现较高通信频带中的天线调谐。 可以使用将天线谐振元件耦合到天线地的可调节电感器来实现较低通信频带中的天线调谐。

公开(公告)号：US20140266938A1

公开(公告)日：2014-09-18

申请号：US13846459

申请日：2013-03-18

Applicant: APPLE INC.

Inventor： Yuehui Ouyang ,  Nanbo Jin ,  Yijun Zhou ,  Enrique Ayala Vazquez ,  Anand Lakshmanan ,  Robert W. Schlub ,  Mattia Pascolini ,  Matthew A. Mow

IPC: H01Q21/28

CPC classification number: H01Q21/28 ,  H01Q1/243 ,  H01Q1/48 ,  H01Q5/321 ,  H01Q5/328 ,  H01Q5/335 ,  H01Q5/378 ,  H01Q9/0421 ,  H01Q13/106

Abstract: Electronic devices may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may include an inverted-F antenna resonating element and an antenna ground that form an inverted-F antenna having first and second antenna ports. The antenna structures may include a slot antenna resonating element. The slot antenna resonating element may serve as a parasitic antenna resonating element for the inverted-F antenna at frequencies in a first communications band and may serve as a slot antenna at frequencies in a second communications band. The slot antenna may be directly fed using a third antenna port. An adjustable capacitor may be coupled to the first port to tune the inverted-F antenna. The inverted-F antenna may also be tuned using an adjustable capacitor bridging the slot antenna resonating element.

Abstract translation: 电子设备可以包括射频收发器电路和天线结构。 天线结构可以包括反F天线谐振元件和形成具有第一和第二天线端口的倒F天线的天线接地。 天线结构可以包括缝隙天线谐振元件。 时隙天线谐振元件可以用作第一通信频带中的频率处的倒F天线的寄生天线谐振元件，并且可以用作第二通信频带中的频率处的时隙天线。 可以使用第三天线端口直接馈送缝隙天线。 可调电容器可以耦合到第一端口以调谐倒F天线。 倒F天线也可以使用桥接天线槽谐振元件的可调节电容进行调谐。

公开(公告)号：US20140266922A1

公开(公告)日：2014-09-18

申请号：US13846471

申请日：2013-03-18

Applicant: APPLE INC.

Inventor： Nanbo Jin ,  Yuehui Ouyang ,  Yijun Zhou ,  Enrique Ayala Vazquez ,  Anand Lakshmanan ,  Robert W. Schlub ,  Mattia Pascolini ,  Matthew A. Mow

IPC: H01Q21/28 ,  H01Q9/06 ,  H01Q1/24

CPC classification number: H01Q1/24 ,  H01Q1/243 ,  H01Q5/10 ,  H01Q5/15 ,  H01Q5/314 ,  H01Q9/06 ,  H01Q21/28

Abstract: Electronic devices may be provided that contain wireless communications circuitry. The wireless communications circuitry may include radio-frequency transceiver circuitry and antenna structures. The antenna structures may form a dual arm inverted-F antenna. The antenna may have a resonating element formed from portions of a peripheral conductive electronic device housing member 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. An antenna feed may be coupled across the gap in parallel with the short circuit path. Low band tuning may be provided using an adjustable inductor that bridges the gap. The antenna may have a slot-based parasitic antenna resonating element with a slot formed between portions of the peripheral conductive electronic device housing member and the antenna ground. An adjustable capacitor may bridge the slot to provide high band tuning.

Abstract translation: 可以提供包含无线通信电路的电子设备。 无线通信电路可以包括射频收发器电路和天线结构。 天线结构可以形成双臂倒F天线。 天线可以具有由外围导电电子器件壳体构件的部分形成的谐振元件，并且可以具有通过间隙与天线谐振元件分离的天线接地。 短路路径可以桥接间隙。 天线馈送可以与短路路径平行地跨越间隙耦合。 可以使用桥接间隙的可调电感器来提供低频调谐。 天线可以具有基于槽的寄生天线谐振元件，在外围导电电子器件壳体部件和天线接地部分之间形成有槽。 可调电容器可以桥接插槽以提供高频带调谐。

公开(公告)号：US20140100004A1

公开(公告)日：2014-04-10

申请号：US13647106

申请日：2012-10-08

Applicant: APPLE INC.

Inventor： Salih Yarga ,  Qingxiang Li ,  Matthew A. Mow ,  Robert W. Schlub

IPC: H01Q1/38 ,  H04W88/02 ,  H01Q9/06

CPC classification number: H01Q1/38 ,  H01Q1/243 ,  H01Q9/06

Abstract: Antenna structures for an antenna may be formed from a dielectric carrier with metal structures. The metal structures may be patterned to cover all sides of the dielectric carrier. The dielectric carrier may have a shape with six sides or other shape that creates a three-dimensional layout for the antenna structures. The antenna structures may have a tunable circuit that allows the antenna to be tuned. The tunable circuit may have first and second terminals coupled to one of the sides of the carrier. The metal structures may be configured to form an inverted-F antenna resonating element. Portions of the metal structures may form a first arm for an inverted-F antenna and portions of the metal structures may form a second arm for the inverted-F antenna. The antenna may operate in multiple communications bands. The tunable circuit may tune one band without significantly tuning other bands.

Abstract translation: 用于天线的天线结构可以由具有金属结构的电介质载体形成。 金属结构可以被图案化以覆盖电介质载体的所有侧面。 电介质载体可以具有六边或其他形状的形状，其形成天线结构的三维布局。 天线结构可以具有允许天线被调谐的可调谐电路。 可调谐电路可以具有耦合到载体的一个侧面的第一和第二端子。 金属结构可以被配置为形成倒F天线谐振元件。 金属结构的部分可以形成用于倒F天线的第一臂，并且金属结构的部分可以形成用于倒F天线的第二臂。 天线可以在多个通信频带中操作。 可调电路可以调谐一个频带而不显着调谐其他频带。