专利快速检索-快速检索全球专利，免费商用专利数据库-IPRDB

1. 发明申请

US20200106506A1 CODEBOOK UPDATES FOR A LINEAR SYSTEM USING SUPERPOSITION 审中-公开
公开(公告)号：US20200106506A1
公开(公告)日：2020-04-02
申请号：US16145829
申请日：2018-09-28
申请人： Apple Inc.
发明人： Srinivasa Yasasvy Sateesh Bhamidipati , Vineet Nayak , Wassim El-Hassan , Xuefeng Zhao
IPC分类号： H04B7/06 , H04B7/0456
摘要： Wireless network interfaces that are capable of transmitting and/or receiving beamformed radiofrequency (RF) signals may be assisted by the use of codebooks. Electronic devices with memory to store a database of codebooks may be used to increase the number of entries available for operation. The database of codebooks may employ environmental parameters to improve efficiency of the wireless network interface. Methods for calibration of electronic devices and/or adjustment and selection of codebooks based on the parameters are also described. The calibration may employ a testing chamber that measure powers at in a limited number of angles.

2. 发明授权

US09654154B2 Radio frequency adaptive voltage shaping power amplifier systems and methods 有权
公开(公告)号：US09654154B2
公开(公告)日：2017-05-16
申请号：US14794412
申请日：2015-07-08
申请人： Apple Inc.
发明人： Gurusubrahmaniyan Subrahmaniyan Radhakrishnan , Wassim El-Hassan
IPC分类号： H03F1/32 , H03G3/30 , H04W52/02 , H04B1/04 , H03F3/19 , H03G1/00 , H03F1/02 , H03G3/00 , H03F3/24 , H04B17/13
CPC分类号： H04B1/0475 , H03F1/0211 , H03F1/0227 , H03F1/3247 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2200/321 , H03F2200/451 , H03F2201/3227 , H03G1/0005 , H03G3/004 , H04B17/13 , H04W52/0225 , H04W52/0251 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/40
摘要： Systems and method for improving operation of a radio frequency system are provided. One embodiment includes instructions to execute a coarse calibration to associate a first output power with a first operational parameter set; instruct the radio frequency system to transmit a signal based at least in part on the first operational parameter set and a base detrough function; determine performance metrics resulting from transmission of the signal; determine changes in the performance metrics resulting from operating the radio frequency based at least in part on the first operational parameter set and each of a plurality of augmented detrough functions; and associate a second operational parameter set with a second output power, in which the second operational parameter set includes one of the plurality of augmented detrough functions selected based at least in part on the changes that reduce margin between the performance metrics and performance metric thresholds.

3. 发明授权

US09634695B1 Wireless devices having multiple transmit chains with predistortion circuitry 有权
公开(公告)号：US09634695B1
公开(公告)日：2017-04-25
申请号：US15269805
申请日：2016-09-19
申请人： Apple Inc.
发明人： Gurusubrahmaniyan Subrahmaniyan Radhakrishnan , Wassim El-Hassan , Srinivasa Yasasvy Sateesh Bhamidipati , Hailong Yang
IPC分类号： H04B1/04 , H04W84/04
CPC分类号： H04B1/04 , H04B1/0475 , H04B2001/0425 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/23 , Y02D70/40
摘要： An electronic device may include wireless communications circuitry that has first and second digital predistortion circuits. The first predistortion circuit receives a first signal at a first frequency while the second predistortion circuit receives a second signal at a second frequency. The first circuit may perform predistortion operations on the first signal using non-unity predistortion coefficients to generate a predistorted signal. The second circuit may apply unity predistortion coefficients to the second signal to generate an undistorted signal. An adder may combine the predistorted and undistorted signals to generate a combined signal that is amplified by amplifier circuitry. An antenna may transmit the amplified signal. By over-distorting the first signal with the first predistortion circuit while the second predistortion circuit does not distort the second signal, the circuitry may mitigate non-linearity in the amplifier while allowing for carrier aggregation operations to be performed with minimal power consumption.

4. 发明授权

US11012164B2 Systems and methods for radio frequency head validation via antenna coupling or signal reflection 有权
公开(公告)号：US11012164B2
公开(公告)日：2021-05-18
申请号：US16585335
申请日：2019-09-27
申请人： Apple Inc.
发明人： Wassim El-Hassan , Bassel Husam Alesh , Srinivasa Yasasvy Sateesh Bhamidipati , Daphne Irene Gorman , Vineet Nayak , Xuefeng Zhao , Xiaohui Gong
IPC分类号： H04B17/13 , H04B17/00 , H04B17/19 , H04B7/06 , H04B17/29
摘要： An electronic device has multiple transmitters to transmit multiple signals. The electronic device also has a receiver to receive a signal. Moreover, the electronic device has a memory to store instructions and a processor to execute the instructions. The instructions cause the processor to send a test transmission signal from a transmitter of the multiple of transmitters, receive the test transmission signal at the receiver, and determine a gain of the test transmission signal. In response to determining that the gain is within a threshold range of an initial gain, the instructions cause the processor to send an indication that the receiver is operating as expected.

5. 发明授权

US10833750B2 Codebook updates for a linear system using superposition 有权
公开(公告)号：US10833750B2
公开(公告)日：2020-11-10
申请号：US16145829
申请日：2018-09-28
申请人： Apple Inc.
发明人： Srinivasa Yasasvy Sateesh Bhamidipati , Vineet Nayak , Wassim El-Hassan , Xuefeng Zhao
IPC分类号： H04B7/06 , H04B7/0456 , H04L25/03 , H04B7/0426
摘要： Wireless network interfaces that are capable of transmitting and/or receiving beamformed radiofrequency (RF) signals may be assisted by the use of codebooks. Electronic devices with memory to store a database of codebooks may be used to increase the number of entries available for operation. The database of codebooks may employ environmental parameters to improve efficiency of the wireless network interface. Methods for calibration of electronic devices and/or adjustment and selection of codebooks based on the parameters are also described. The calibration may employ a testing chamber that measure powers at in a limited number of angles.

6. 发明授权

US10666366B2 Reverse coupler for transceiver devices 有权
公开(公告)号：US10666366B2
公开(公告)日：2020-05-26
申请号：US16026808
申请日：2018-07-03
申请人： Apple Inc.
发明人： Wassim El-Hassan , Yingjie Xu
IPC分类号： H04B17/00 , H04B17/15 , H04B17/29 , H04B1/40
摘要： An electronic device may include a feedback circuit that may determine an error of a first signal to be transmitted to a second electronic device. The electronic device may also include a transceiver that may adjust the first signal based on the error and send the adjusted first signal to the second electronic device. The electronic device may also include a coupler circuitry configured to route a second signal received from the second electronic device or a third electronic device to the feedback circuit, such that the feedback circuit may determine one or more properties associated with the second signal.

7. 发明申请

US20180048398A1 Millimeter Wave Test Systems 审中-公开
公开(公告)号：US20180048398A1
公开(公告)日：2018-02-15
申请号：US15429511
申请日：2017-02-10
申请人： Apple Inc.
发明人： Wassim El-Hassan
IPC分类号： H04B17/10 , H01Q1/38 , H01Q3/36 , H01Q21/22 , H04B7/08
CPC分类号： H04B17/101 , H01Q3/267 , H01Q3/36 , H04B17/0085 , H04B17/14
摘要： An electronic device may be provided with wireless circuitry that handles millimeter wave communications. The wireless circuitry may be tested using a test system that includes a fixture, computing equipment, and a substrate placed in the fixture. The fixture may hold an array of antennas on the substrate at a selected distance from an array of antennas on the wireless circuitry under test. The array on the substrate may receive millimeter wave test signals from the wireless circuitry under test. A transmission line may convey the millimeter wave test signals to a signal analyzer without down-converting the signals. The analyzer and computing equipment may identify performance metric data based on the test signals and may determine whether the wireless circuitry has satisfactory performance based on the performance metric data. The test system may be calibrated using settings that are specific to the design of the wireless circuitry under test.

8. 发明授权

US11637640B2 Self-calibration for implicit beamforming 有权
公开(公告)号：US11637640B2
公开(公告)日：2023-04-25
申请号：US16948618
申请日：2020-09-25
申请人： Apple Inc.
发明人： Kai Bai , Wassim El-Hassan , Linchao Liao , Ding Nie
IPC分类号： H04B17/14 , H04B7/06 , H04B17/19 , H04B17/11 , H04B17/21
摘要： A user equipment (UE) configured to perform self-calibration. The UE includes a first radio configured to perform implicit beamforming and further configured to transmit and receive signals during the calibration procedure. The UE further includes a first plurality of antennas communicatively coupled to the first radio, a second radio configured to transmit and receive signals during the calibration procedure and at least one second antenna communicatively coupled to the second radio. The calibration procedure includes the second radio transmitting a tone signal over the calibration frequency and a first antenna of the first radio receiving the tone signal and a second antenna of the first radio receiving the tone signal.

9. 发明申请

US20170126258A1 Wireless Devices Having Multiple Transmit Chains With Predistortion Circuitry 有权
公开(公告)号：US20170126258A1
公开(公告)日：2017-05-04
申请号：US15269805
申请日：2016-09-19
申请人： Apple Inc.
发明人： Gurusubrahmaniyan Subrahmaniyan Radhakrishnan , Wassim El-Hassan , Srinivasa Yasasvy Sateesh Bhamidipati , Hailong Yang
IPC分类号： H04B1/04
CPC分类号： H04B1/04 , H04B1/0475 , H04B2001/0425 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/146 , Y02D70/164 , Y02D70/23 , Y02D70/40
摘要： An electronic device may include wireless communications circuitry that has first and second digital predistortion circuits. The first predistortion circuit receives a first signal at a first frequency while the second predistortion circuit receives a second signal at a second frequency. The first circuit may perform predistortion operations on the first signal using non-unity predistortion coefficients to generate a predistorted signal. The second circuit may apply unity predistortion coefficients to the second signal to generate an undistorted signal. An adder may combine the predistorted and undistorted signals to generate a combined signal that is amplified by amplifier circuitry. An antenna may transmit the amplified signal. By over-distorting the first signal with the first predistortion circuit while the second predistortion circuit does not distort the second signal, the circuitry may mitigate non-linearity in the amplifier while allowing for carrier aggregation operations to be performed with minimal power consumption.

10. 发明授权

US09537519B2 Systems and methods for performing power amplifier bias calibration 有权
标题翻译：执行功率放大器偏置校准的系统和方法
公开(公告)号：US09537519B2
公开(公告)日：2017-01-03
申请号：US14525077
申请日：2014-10-27
申请人： Apple Inc.
发明人： Wassim El-Hassan , Gurusubrahmaniyan Subrahmaniyan Radhakrishnan
IPC分类号： H04B1/40 , H04B1/04 , H03F1/02 , H03F1/32 , H03F3/19 , H03F3/24 , H04B17/00 , H04B17/13
CPC分类号： H04B1/0475 , H03F1/0227 , H03F1/0266 , H03F1/3247 , H03F3/19 , H03F3/24 , H03F3/245 , H03F2200/102 , H03F2200/451 , H04B17/0085 , H04B17/13 , H04B2001/0408
摘要： Wireless communications circuitry in an electronic device may include power amplifier circuitry that is powered using a bias voltage supplied by adjustable power supply circuitry. The power supply circuitry may include envelope tracking circuitry that continuously adjusts the bias voltage. The wireless communications circuitry may generate test signals and may generate performance metric data from the test signals. Processing circuitry may generate bias voltage calibration data based on the performance metric data and may provide the calibration data to the envelope tracking circuitry. After the calibration data has been generated, the envelope tracking circuitry may continuously select bias voltages to provide to the amplifier based on the magnitude of signals that are transmitted and the calibration data. By actively adjusting the bias voltage in this way, power consumption may be minimized without generating undesirable harmonics or other radio-frequency performance requirement violations.
摘要翻译：电子设备中的无线通信电路可以包括使用由可调电源电路提供的偏置电压供电的功率放大器电路。电源电路可以包括连续调整偏置电压的包络跟踪电路。无线通信电路可以产生测试信号并且可以从测试信号生成性能度量数据。处理电路可以基于性能度量数据产生偏置电压校准数据，并且可以将校准数据提供给包络跟踪电路。在产生校准数据之后，包络跟踪电路可以连续地选择偏置电压，以便根据发送的信号的大小和校准数据提供给放大器。通过以这种方式主动调整偏置电压，可以最小化功耗，而不会产生不期望的谐波或其他射频性能要求违规。

你已经成功收藏专利！

检索式保存成功!

IPRDB

热门服务

关于我们

友情链接

联系方式