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公开(公告)号：US09537519B2
公开(公告)日：2017-01-03
申请号：US14525077
申请日：2014-10-27
Applicant: Apple Inc.
CPC classification number: H04B1/0475 , H03F1/0227 , H03F1/0266 , H03F1/3247 , H03F3/19 , H03F3/24 , H03F3/245 , H03F2200/102 , H03F2200/451 , H04B17/0085 , H04B17/13 , H04B2001/0408
Abstract: 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.
Abstract translation: 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。
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公开(公告)号：US09300333B2
公开(公告)日：2016-03-29
申请号：US14449976
申请日：2014-08-01
Applicant: Apple Inc.
CPC classification number: H04B1/0475 , H03F1/3241 , H04B2001/0425 , H04W52/0209 , Y02D70/00 , Y02D70/1242 , Y02D70/1262 , Y02D70/142 , Y02D70/144 , Y02D70/164 , Y02D70/40
Abstract: Methods for performing predistortion calibration on wireless communications circuitry are provided. The wireless communications circuitry may be adjusted using a digital gain setting and a radio gain index setting. A particular channel in a given band exhibiting the maximum dynamic range may be selected for measurement. Predistortion coefficient values may be computed based on measured results in the select channel. A power list may be obtained for the selected channel based on a maximum peak power level. A reference power list may then be obtained based on the minimum dynamic range in the given band. The predistortion coefficients associated with the selected channel may be translated from its power list to the reference power list. Predistortion coefficients for the remaining channels in the given band may similarly be computed by interpolating/extrapolating based on the values in their respective power lists and the reference power list.
Abstract translation: 提供了在无线通信电路上执行预失真校准的方法。 可以使用数字增益设置和无线电增益指数设置来调整无线通信电路。 可以选择具有最大动态范围的给定频带中的特定频道进行测量。 可以基于选择信道中的测量结果来计算预失真系数值。 可以基于最大峰值功率电平为所选择的频道获得功率列表。 然后可以基于给定频带中的最小动态范围来获得参考功率列表。 与所选频道相关联的预失真系数可以从其功率列表转换到参考功率列表。 可以类似地通过基于它们各自的功率列表和参考功率列表中的值的内插/外推来计算给定频带中的剩余信道的预失真系数。
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公开(公告)号：US20160072530A1
公开(公告)日：2016-03-10
申请号：US14525077
申请日：2014-10-27
Applicant: Apple Inc.
CPC classification number: H04B1/0475 , H03F1/0227 , H03F1/0266 , H03F1/3247 , H03F3/19 , H03F3/24 , H03F3/245 , H03F2200/102 , H03F2200/451 , H04B17/0085 , H04B17/13 , H04B2001/0408
Abstract: 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.
Abstract translation: 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。
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14.发明申请RADIO FREQUENCY ADAPTIVE VOLTAGE SHAPING POWER AMPLIFIER SYSTEMS AND METHODS 有权无线电频率自适应电压形式功率放大器系统和方法公开(公告)号：US20160072457A1
公开(公告)日：2016-03-10
申请号：US14794412
申请日：2015-07-08
Applicant: Apple Inc.
CPC classification number: 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
Abstract: 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.
Abstract translation: 提供了改善射频系统操作的系统和方法。 一个实施例包括执行粗略校准以将第一输出功率与第一操作参数组相关联的指令; 指示所述射频系统至少部分地基于所述第一操作参数集和基本去耦功能来发送信号; 确定由信号传输产生的性能指标; 确定至少部分地基于第一操作参数集和多个增强去空函数中的每一个来操作射频而导致的性能度量的改变; 并且将第二操作参数集合与第二输出功率相关联，其中所述第二操作参数集包括至少部分地基于减少所述性能度量和性能度量阈值之间的裕度的所述改变来选择的所述多个增强去耦功能中的一个。
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