公开(公告)号：US20220069775A1

公开(公告)日：2022-03-03

申请号：US17445179

申请日：2021-08-16

Applicant: Skyworks Solutions, Inc.

Inventor： Florinel G. Balteanu ,  Serge Francois Drogi ,  Robert John Thompson ,  Shayan Farahvash ,  David Richard Pehlke ,  Stephan Henzler

IPC: H03F1/02 ,  H03F3/24 ,  H04B1/40

Abstract: Power amplifier modules with controllable envelope tracking noise filters are provided herein. In certain embodiments, an envelope tracking system includes a power amplifier module and an envelope tracker that provides the power amplifier module with a power amplifier supply voltage that changes based on an envelope of a radio frequency (RF) signal amplified by the power amplifier module. The power amplifier module includes a controllable filter that filters the power amplifier supply voltage to provide flexibility in filtering envelope tracking noise.

公开(公告)号：US10382147B2

公开(公告)日：2019-08-13

申请号：US15377755

申请日：2016-12-13

Applicant: SKYWORKS SOLUTIONS, INC. ,  SNAPTRACK, INC.

Inventor： David Steven Ripley ,  Sabah Khesbak ,  Benjamin Bartram ,  Kevin Lee Cobley ,  Robert Astle Henshaw ,  Julian Hildersley ,  Robert John Thompson

IPC: 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

Abstract: 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.

公开(公告)号：US20180302036A1

公开(公告)日：2018-10-18

申请号：US15922641

申请日：2018-03-15

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Florinel G. Balteanu ,  Sabah Khesbak ,  Yevgeniy A. Tkachenko ,  David Steven Ripley ,  Robert John Thompson

IPC: H03F1/02 ,  H03F1/30 ,  H03F1/56 ,  H03F3/19 ,  H04B1/04 ,  H03F3/21 ,  H03F3/24 ,  H03F3/72

CPC classification number: H03F1/0205 ,  H03F1/02 ,  H03F1/0211 ,  H03F1/0227 ,  H03F1/0244 ,  H03F1/302 ,  H03F1/56 ,  H03F3/19 ,  H03F3/21 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/102 ,  H03F2200/108 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/336 ,  H03F2200/387 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/555 ,  H03F2203/21106 ,  H03F2203/7221 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04B2001/045

Abstract: Apparatus and methods for envelope tracking systems are provided. In certain configurations, an envelope tracking system includes a digital filter that generates a filtered envelope signal based on a digital envelope signal representing an envelope of a radio frequency signal, a buck converter controllable by the filtered envelope signal and including an output electrically connected to a power amplifier supply voltage, a digital-to-analog converter module including an output electrically connected to the output of the buck converter and that provides an output current, and a digital shaping and delay circuit configured to generate a shaped envelope signal based on shaping the filtered envelope signal. The shaped envelope signal controls a magnitude of the output current, and the digital shaping and delay circuit controls a delay of the shaped envelope signal to align the output of the digital-to-analog converter module and the output of the buck converter.

公开(公告)号：US20170093505A1

公开(公告)日：2017-03-30

申请号：US15377755

申请日：2016-12-13

Applicant: SKYWORKS SOLUTIONS, INC. ,  SNAPTRACK, INC.

Inventor： David Steven Ripley ,  Sabah Khesbak ,  Benjamin Bartram ,  Kevin Lee Cobley ,  Robert Astle Henshaw ,  Julian Hildersley ,  Robert John Thompson

IPC: H04B17/13 ,  H03F1/56 ,  H03F3/24 ,  H03F1/32 ,  H03F3/19 ,  H03F1/02 ,  H03G3/30

CPC classification number: 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

Abstract: 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.

公开(公告)号：US11159194B2

公开(公告)日：2021-10-26

申请号：US16949730

申请日：2020-11-12

Applicant: Skyworks Solutions, Inc.

Inventor： Robert John Thompson ,  Timothy M. Faughn ,  Jonathan Christian Crandall

IPC: H04B1/44 ,  H04M1/00 ,  H04L5/14

Abstract: Front end systems with switched termination for enhanced intermodulation distortion performance are provided herein. The switched termination can be used on transmit paths and/or receive paths of the front end system to suppress impedance variation when the signal paths are inactive. For example, with respect to switched termination for transmit paths, a front end system can include a frequency multiplexing circuit connected to a band switch by a first radio frequency (RF) signal path and by a second RF signal path. The band switch selectively provides the frequency multiplexing circuit with a first transmit signal over the first RF signal path and with a second transmit signal over the second RF signal path. The front end system further includes a switched termination circuit in shunt with the first RF signal path and operable to turn on to suppress impedance variation when the first RF signal path is inactive.

公开(公告)号：US10333470B2

公开(公告)日：2019-06-25

申请号：US15922641

申请日：2018-03-15

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Florinel G. Balteanu ,  Sabah Khesbak ,  Yevgeniy A. Tkachenko ,  David Steven Ripley ,  Robert John Thompson

IPC: H03F1/02 ,  H03F1/30 ,  H04B1/04 ,  H03F3/21 ,  H03F1/56 ,  H03F3/19 ,  H03F3/24 ,  H03F3/72

Abstract: Apparatus and methods for envelope tracking systems are provided. In certain configurations, an envelope tracking system includes a digital filter that generates a filtered envelope signal based on a digital envelope signal representing an envelope of a radio frequency signal, a buck converter controllable by the filtered envelope signal and including an output electrically connected to a power amplifier supply voltage, a digital-to-analog converter module including an output electrically connected to the output of the buck converter and that provides an output current, and a digital shaping and delay circuit configured to generate a shaped envelope signal based on shaping the filtered envelope signal. The shaped envelope signal controls a magnitude of the output current, and the digital shaping and delay circuit controls a delay of the shaped envelope signal to align the output of the digital-to-analog converter module and the output of the buck converter.

公开(公告)号：US09935582B2

公开(公告)日：2018-04-03

申请号：US15336311

申请日：2016-10-27

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Florinel G. Balteanu ,  Sabah Khesbak ,  Yevgeniy A. Tkachenko ,  David Steven Ripley ,  Robert John Thompson

IPC: H03F1/02 ,  H03F1/30 ,  H04B1/04 ,  H03F3/21 ,  H03F1/56 ,  H03F3/19 ,  H03F3/24 ,  H03F3/72

CPC classification number: H03F1/0205 ,  H03F1/02 ,  H03F1/0211 ,  H03F1/0227 ,  H03F1/0244 ,  H03F1/302 ,  H03F1/56 ,  H03F3/19 ,  H03F3/21 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/102 ,  H03F2200/108 ,  H03F2200/111 ,  H03F2200/294 ,  H03F2200/336 ,  H03F2200/387 ,  H03F2200/414 ,  H03F2200/417 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/555 ,  H03F2203/21106 ,  H03F2203/7221 ,  H04B1/04 ,  H04B1/0475 ,  H04B2001/0416 ,  H04B2001/045

Abstract: Apparatus and methods for envelope tracking systems are provided. In certain configurations, an envelope tracking system includes a digital filter that generates a filtered envelope signal based on a digital envelope signal representing an envelope of a radio frequency signal, a buck converter controllable by the filtered envelope signal and including an output electrically connected to a power amplifier supply voltage, a digital-to-analog converter module including an output electrically connected to the output of the buck converter and that provides an output current, and a digital shaping and delay circuit configured to generate a shaped envelope signal based on shaping the filtered envelope signal. The shaped envelope signal controls a magnitude of the output current, and the digital shaping and delay circuit controls a delay of the shaped envelope signal to align the output of the digital-to-analog converter module and the output of the buck converter.

公开(公告)号：US09571152B2

公开(公告)日：2017-02-14

申请号：US14964375

申请日：2015-12-09

Applicant: SKYWORKS SOLUTIONS, INC. ,  SNAPTRACK, INC.

Inventor： David Steven Ripley ,  Sabah Khesbak ,  Benjamin Bartram ,  Kevin Lee Cobley ,  Robert Astle Henshaw ,  Julian Hildersley ,  Robert John Thompson

IPC: 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 classification number: 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

Abstract: 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.

Abstract translation: 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。

公开(公告)号：US20230239000A1

公开(公告)日：2023-07-27

申请号：US18131245

申请日：2023-04-05

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Robert John Thompson

IPC: H04B1/44 ,  H04L5/14

CPC classification number: H04B1/44 ,  H04L5/14

Abstract: Circuits, devices, and methods related to setting a drive power of a power amplifier to a first power level, switching an input of the power amplifier to an isolation state, switching an antenna selection state of an antenna network, and switching the input of the power amplifier to an active state.

公开(公告)号：US20210075462A1

公开(公告)日：2021-03-11

申请号：US16991851

申请日：2020-08-12

Applicant: SKYWORKS SOLUTIONS, INC.

Inventor： Robert John Thompson

IPC: H04B1/44 ,  H04L5/14

Abstract: Circuits, devices, and methods related to setting a drive power of a power amplifier to a first power level, switching an input of the power amplifier to an isolation state, switching an antenna selection state of an antenna network, and switching the input of the power amplifier to an active state.