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公开(公告)号：US20160099742A1
公开(公告)日：2016-04-07
申请号：US14964375
申请日：2015-12-09
发明人： David Steven Ripley , Sabah Khesbak , Benjamin Bartram , Kevin Lee Cobley , Robert Astle Henshaw , Julian Hildersley , Robert John Thompson
CPC分类号： H04B17/13 , H03F1/0211 , H03F1/0216 , H03F1/0222 , H03F1/0227 , H03F1/025 , H03F1/30 , H03F1/301 , H03F1/32 , H03F1/56 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/211 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/108 , H03F2200/111 , H03F2200/15 , H03F2200/387 , H03F2200/405 , H03F2200/429 , H03F2200/451 , H03F2200/462 , H03F2200/465 , H03F2200/471 , H03F2200/507 , H03F2200/511 , H03F2203/21106 , H03G3/30 , H03G3/3036 , H03G3/3042 , H04B1/40 , H04W88/02
摘要： Apparatus and methods for calibration of envelope trackers are provided. In one embodiment, a power amplifier system includes a VGA that amplifies an RF input signal to generate an amplified RF input signal, a power amplifier that amplifies the amplified RF input signal to generate an RF output signal, and an envelope tracker that generates a supply voltage for the power amplifier. The envelope tracker includes a scaling module that generates a scaled envelope signal based on a power control level (PCL) signal and an envelope signal that changes in relation to an envelope of the RF input signal. The envelope tracker further includes a calibration module that controls an amount of scaling of the scaled envelope signal based on calibration data to compensate for an envelope amplitude misalignment of the envelope tracker. The envelope tracker controls the voltage level of the supply voltage based on the scaled envelope signal.
摘要翻译： 提供了用于校准信封跟踪器的装置和方法。 在一个实施例中，功率放大器系统包括放大RF输入信号以产生放大RF输入信号的VGA，放大RF输入信号以产生RF输出信号的功率放大器，以及产生电源的包络跟踪器 功率放大器的电压。 包络跟踪器包括缩放模块，其基于功率控制电平（PCL）信号和相对于RF输入信号的包络而改变的包络信号来生成缩放的包络信号。 信封跟踪器还包括校准模块，其基于校准数据来控制缩放的包络信号的缩放量，以补偿包络跟踪器的包络幅度失准。 信封跟踪器基于经缩放的包络信号控制电源电压的电压电平。
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公开(公告)号：US09294043B2
公开(公告)日：2016-03-22
申请号：US14581630
申请日：2014-12-23
发明人： David Steven Ripley , Sabah Khesbak , Benjamin Bartram , Kevin Lee Cobley , Robert Astle Henshaw , Julian Hildersley , Robert John Thompson
IPC分类号： H04B1/04 , H03F1/30 , H03F1/02 , H03F3/24 , H03G3/30 , H03F1/56 , H03F3/193 , H03F3/68 , H03F3/72 , H03F3/19 , H03F3/21
CPC分类号： H04B17/13 , H03F1/0211 , H03F1/0216 , H03F1/0222 , H03F1/0227 , H03F1/025 , H03F1/30 , H03F1/301 , H03F1/32 , H03F1/56 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/211 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/108 , H03F2200/111 , H03F2200/15 , H03F2200/387 , H03F2200/405 , H03F2200/429 , H03F2200/451 , H03F2200/462 , H03F2200/465 , H03F2200/471 , H03F2200/507 , H03F2200/511 , H03F2203/21106 , H03G3/30 , H03G3/3036 , H03G3/3042 , H04B1/40 , H04W88/02
摘要： Apparatus and methods for envelope tracking calibration are provided. In one embodiment, a power amplifier system includes a power amplifier, an envelope tracker that generates the power amplifier's supply voltage, a power detector, and a calibration module. The envelope tracker includes an envelope shaping table generated at a desired gain compression and a scaling module that scales an amplitude of an envelope signal. The power detector measures the power amplifier's output power, and the calibration module provides calibration data to the scaling module to change the scaling of the envelope signal's amplitude. The calibration module sets the calibration data to a first value corresponding to a supply voltage level associated with substantially no gain compression, and reduces the supply voltage level by changing the calibration data until the power detector indicates that the gain compression of the power amplifier is about equal to the desired gain compression.
摘要翻译： 提供用于包络跟踪校准的装置和方法。 在一个实施例中，功率放大器系统包括功率放大器，产生功率放大器电源电压的封装跟踪器，功率检测器和校准模块。 包络跟踪器包括以期望的增益压缩生成的包络整形表和缩放包络信号的幅度的缩放模块。 功率检测器测量功率放大器的输出功率，校准模块向定标模块提供校准数据，以改变包络信号幅度的缩放。 校准模块将校准数据设置为对应于与基本上没有增益压缩相关联的电源电压电平的第一值，并且通过改变校准数据来降低电源电压，直到功率检测器指示功率放大器的增益压缩为约 等于所需的增益压缩。
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3.发明申请公开(公告)号：US20190319720A1
公开(公告)日：2019-10-17
申请号：US16453675
申请日：2019-06-26
发明人： David Steven Ripley , Sabah Khesbak , Benjamin Bartram , Kevin Lee Cobley , Robert Astle Henshaw , Julian Hildersley , Robert John Thompson
IPC分类号： H04B17/13 , H03F1/32 , H03F1/02 , H04B1/40 , H04W88/02 , H03F3/21 , H03F3/24 , H03G3/30 , H03F3/19 , H03F1/30 , H03F1/56 , H03F3/193 , H03F3/68 , H03F3/72
摘要： Apparatus and methods of calibrating a power amplifier system to compensate for envelope amplitude misalignment are provided. In certain configurations, a method of calibrating a power amplifier system includes generating a supply voltage of a power amplifier using an envelope tracker based on shaping a scaled envelope signal using shaping data generated at a target gain compression, controlling a variable gain of a variable gain amplifier based on a gain control level signal, changing the variable gain by adjusting the gain control level signal using a calibration module, monitoring an output of the power amplifier to determine an amount of variable gain at which a detected gain compression of the power amplifier corresponds to the target gain compression of the shaping data, and calibrating the power amplifier system to compensate for envelope amplitude misalignment based on the determined amount of variable gain.
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公开(公告)号：US09571152B2
公开(公告)日：2017-02-14
申请号：US14964375
申请日：2015-12-09
发明人： David Steven Ripley , Sabah Khesbak , Benjamin Bartram , Kevin Lee Cobley , Robert Astle Henshaw , Julian Hildersley , Robert John Thompson
IPC分类号： H04B1/04 , H04B1/40 , H03F1/02 , H03F3/24 , H03G3/30 , H03F1/30 , H03F1/56 , H03F3/193 , H03F3/68 , H03F3/72 , H03F3/19 , H03F3/21 , H04W88/02
CPC分类号： H04B17/13 , H03F1/0211 , H03F1/0216 , H03F1/0222 , H03F1/0227 , H03F1/025 , H03F1/30 , H03F1/301 , H03F1/32 , H03F1/56 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/211 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/108 , H03F2200/111 , H03F2200/15 , H03F2200/387 , H03F2200/405 , H03F2200/429 , H03F2200/451 , H03F2200/462 , H03F2200/465 , H03F2200/471 , H03F2200/507 , H03F2200/511 , H03F2203/21106 , H03G3/30 , H03G3/3036 , H03G3/3042 , H04B1/40 , H04W88/02
摘要： Apparatus and methods for calibration of envelope trackers are provided. In one embodiment, a power amplifier system includes a VGA that amplifies an RF input signal to generate an amplified RF input signal, a power amplifier that amplifies the amplified RF input signal to generate an RF output signal, and an envelope tracker that generates a supply voltage for the power amplifier. The envelope tracker includes a scaling module that generates a scaled envelope signal based on a power control level (PCL) signal and an envelope signal that changes in relation to an envelope of the RF input signal. The envelope tracker further includes a calibration module that controls an amount of scaling of the scaled envelope signal based on calibration data to compensate for an envelope amplitude misalignment of the envelope tracker. The envelope tracker controls the voltage level of the supply voltage based on the scaled envelope signal.
摘要翻译： 提供了用于校准信封跟踪器的装置和方法。 在一个实施例中，功率放大器系统包括放大RF输入信号以产生放大RF输入信号的VGA，放大RF输入信号以产生RF输出信号的功率放大器，以及产生电源的包络跟踪器 功率放大器的电压。 包络跟踪器包括缩放模块，其基于功率控制电平（PCL）信号和相对于RF输入信号的包络而改变的包络信号来生成缩放的包络信号。 信封跟踪器还包括校准模块，其基于校准数据来控制缩放的包络信号的缩放量，以补偿包络跟踪器的包络幅度失准。 信封跟踪器基于经缩放的包络信号控制电源电压的电压电平。
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5.发明授权公开(公告)号：US10382147B2
公开(公告)日：2019-08-13
申请号：US15377755
申请日：2016-12-13
发明人： David Steven Ripley , Sabah Khesbak , Benjamin Bartram , Kevin Lee Cobley , Robert Astle Henshaw , Julian Hildersley , Robert John Thompson
IPC分类号： H03F1/02 , H03F1/30 , H03F1/32 , H03F1/56 , H03F3/19 , H03F3/21 , H03F3/24 , H03F3/68 , H03F3/72 , H03G3/30 , H04B1/40 , H03F3/193 , H04B17/13 , H04W88/02
摘要： Methods of calibrating a power amplifier system to compensate for envelope amplitude misalignment are provided. In certain configurations, a method of calibrating a power amplifier system includes amplifying a radio frequency signal from a transceiver using a power amplifier and generating a supply voltage of the power amplifier using an envelope tracker, including generating a scaled envelope signal based on a power control level signal and an envelope signal, and shaping the scaled envelope signal using a shaping table generated at a target gain compression. The method further includes changing a scaling of the scaled envelope signal using a calibration module, monitoring an output of the power amplifier to determine an amount of scaling of the scaled envelope signal at which a detected gain compression of the power amplifier corresponds to the target gain compression of the shaping table, and calibrating the power amplifier system based on the determination.
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6.发明申请公开(公告)号：US20170093505A1
公开(公告)日：2017-03-30
申请号：US15377755
申请日：2016-12-13
发明人： David Steven Ripley , Sabah Khesbak , Benjamin Bartram , Kevin Lee Cobley , Robert Astle Henshaw , Julian Hildersley , Robert John Thompson
CPC分类号： H04B17/13 , H03F1/0211 , H03F1/0216 , H03F1/0222 , H03F1/0227 , H03F1/025 , H03F1/30 , H03F1/301 , H03F1/32 , H03F1/56 , H03F3/19 , H03F3/193 , H03F3/21 , H03F3/211 , H03F3/245 , H03F3/68 , H03F3/72 , H03F2200/102 , H03F2200/108 , H03F2200/111 , H03F2200/15 , H03F2200/387 , H03F2200/405 , H03F2200/429 , H03F2200/451 , H03F2200/462 , H03F2200/465 , H03F2200/471 , H03F2200/507 , H03F2200/511 , H03F2203/21106 , H03G3/30 , H03G3/3036 , H03G3/3042 , H04B1/40 , H04W88/02
摘要： Methods of calibrating a power amplifier system to compensate for envelope amplitude misalignment are provided. In certain configurations, a method of calibrating a power amplifier system includes amplifying a radio frequency signal from a transceiver using a power amplifier and generating a supply voltage of the power amplifier using an envelope tracker, including generating a scaled envelope signal based on a power control level signal and an envelope signal, and shaping the scaled envelope signal using a shaping table generated at a target gain compression. The method further includes changing a scaling of the scaled envelope signal using a calibration module, monitoring an output of the power amplifier to determine an amount of scaling of the scaled envelope signal at which a detected gain compression of the power amplifier corresponds to the target gain compression of the shaping table, and calibrating the power amplifier system based on the determination.
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公开(公告)号：US12063133B2
公开(公告)日：2024-08-13
申请号：US17839077
申请日：2022-06-13
CPC分类号： H04L27/2613 , H04B7/0602 , H04B7/0604 , H04L5/0048 , H04L5/0051 , H04L27/2605
摘要： Apparatus and methods for sounding reference signal (SRS) switching are provided. In certain embodiments, a controller internal to the power amplifier module initiates a sequence of instructions, in response to a single command from UE. The instructions cause a reduction in gain of the power amplifier, and initiate a delay. The antennas switch actuates after the delay to switch from a first antenna to a second antenna. The teachings herein can be used to avoid over-power on the power amplifier and antenna switch.
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公开(公告)号：US12063014B2
公开(公告)日：2024-08-13
申请号：US17580549
申请日：2022-01-20
CPC分类号： H03F1/523 , H01L27/0266 , H03F3/195 , H03F2200/441 , H03F2200/451
摘要： Amplifier having electrostatic discharge and surge protection circuit. In some embodiments, a radio-frequency integrated circuit can include an amplifier, a controller configured to control operation of the amplifier, and a clamp circuit configured to provide electrostatic discharge protection and surge protection for either or both of the amplifier and the controller. The clamp circuit can include a feedback combination clamp implemented to direct a current associated with either or both of an electrostatic discharge and a surge at a first node to a second node.
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9.发明公开公开(公告)号：US20240113671A1
公开(公告)日：2024-04-04
申请号：US18471593
申请日：2023-09-21
CPC分类号： H03F3/245 , H03F1/0227 , H04B1/0475 , H03F2200/102 , H03F2200/451 , H04B2001/0408
摘要： Systems and methods for pulse shaping voltage transitions in envelope tracking systems are provided. In one aspect, a radio frequency module includes a power amplifier configured to receive a radio frequency input signal and a voltage source. The power amplifier further configured to amplify a radio frequency input signal using the voltage source to generate an output radio frequency signal. The radio frequency module further includes a multi-level switch modulator configured to receive an envelope signal indicative of an envelope of the radio frequency input signal and generate the voltage source based on the envelope signal at one of a plurality of discrete voltage levels. The multi-level switch modulator is further configured to generate the voltage source using an analog component during transitions between discrete voltage levels and a digital component following the transitions.
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公开(公告)号：US20220407572A1
公开(公告)日：2022-12-22
申请号：US17839065
申请日：2022-06-13
摘要： Apparatus and methods for sounding reference signal (SRS) switching are provided. In certain embodiments, a controller internal to the power amplifier module initiates a sequence of instructions, in response to a single command from UE. The instructions cause a reduction in RF signal amplitude at the power amplifier output and then cause the antenna switch to actuate. Thus ensuring a single command transition and preventing over-power on the power amplifier and antenna switch. The teachings herein can be used to facilitate reduction in gap times between transitions on different antennas and avoid the use of a blank symbol before and after each SRS symbol
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