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    Apparatus and methods for programmable low dropout regulators for radio frequency electronics
    1.
    发明授权
    Apparatus and methods for programmable low dropout regulators for radio frequency electronics 有权

    公开(公告)号：US09817416B2

    公开(公告)日：2017-11-14

    申请号：US15219915

    申请日：2016-07-26

    申请人： SKYWORKS SOLUTIONS, INC.

    发明人： Netsanet Gebeyehu ,  Ying Shi ,  Jinghang Feng

    IPC分类号： G05F1/56 ,  G05F1/575

    CPC分类号： G05F1/575

    摘要： Apparatus and methods for programmable low dropout (LDO) regulators for radio frequency (RF) electronics are provided herein. In certain configurations, an LDO regulator for generating a programmable output voltage includes a regulation field-effect transistor (FET) having a drain electrically connected to the LDO regulator's output, an error amplifier that controls a gate of the regulation FET, a feedback circuit that provides a feedback signal to an inverting input of the error amplifier, an output capacitor electrically connected to the LDO regulator's output, and an alternative discharge circuit. When the output voltage of the LDO regulator is programmed from a high voltage level to a low voltage level, the alternative discharge circuit activates to discharge the output capacitor to improve the LDO regulator's transient response.

    APPARATUS AND METHODS FOR PROGRAMMABLE LOW DROPOUT REGULATORS FOR RADIO FREQUENCY ELECTRONICS
    4.
    发明申请
    APPARATUS AND METHODS FOR PROGRAMMABLE LOW DROPOUT REGULATORS FOR RADIO FREQUENCY ELECTRONICS 有权
    无线电频率可编程低压差稳压器的装置和方法

    公开(公告)号：US20170052553A1

    公开(公告)日：2017-02-23

    申请号：US15219915

    申请日：2016-07-26

    申请人： SKYWORKS SOLUTIONS, INC.

    发明人： Netsanet Gebeyehu ,  Ying Shi ,  Jinghang Feng

    IPC分类号： G05F1/575

    CPC分类号： G05F1/575

    摘要： Apparatus and methods for programmable low dropout (LDO) regulators for radio frequency (RF) electronics are provided herein. In certain configurations, an LDO regulator for generating a programmable output voltage includes a regulation field-effect transistor (FET) having a drain electrically connected to the LDO regulator's output, an error amplifier that controls a gate of the regulation FET, a feedback circuit that provides a feedback signal to an inverting input of the error amplifier, an output capacitor electrically connected to the LDO regulator's output, and an alternative discharge circuit. When the output voltage of the LDO regulator is programmed from a high voltage level to a low voltage level, the alternative discharge circuit activates to discharge the output capacitor to improve the LDO regulator's transient response.

    摘要翻译： 本文提供了用于射频（RF）电子设备的可编程低压差（LDO）调节器的装置和方法。 在某些配置中，用于产生可编程输出电压的LDO调节器包括具有电连接到LDO调节器的输出的漏极的调节场效应晶体管（FET），控制调节FET的栅极的误差放大器，反馈电路， 向误差放大器的反相输入提供反馈信号，电连接到LDO调节器的输出的输出电容器和替代的放电电路。 当LDO稳压器的输出电压从高电压电平编程到低电压电平时，替代放电电路将激活放电输出电容器，以改善LDO稳压器的瞬态响应。

    Devices and methods related to multi-band power amplifier
    5.
    发明授权
    Devices and methods related to multi-band power amplifier 有权

    公开(公告)号：US10886953B2

    公开(公告)日：2021-01-05

    申请号：US16512384

    申请日：2019-07-16

    申请人： SKYWORKS SOLUTIONS, INC.

    发明人： Jinghang Feng ,  Shuqi Zheng ,  Netsanet Gebeyehu ,  Ying Shi ,  James Phillip Young

    IPC分类号： H04B1/00 ,  H03F3/217 ,  H03F3/191 ,  H03F3/24 ,  H03F3/72 ,  H03F1/56

    摘要： Systems, devices and methods related to multi-band power amplifier. In some embodiments, a power amplifier module includes a power amplifier having an output stage and configured to receive a signal. The power amplifier module also includes a first programmable harmonic termination circuit in electrical communication with the output stage of the power amplifier. The first programmable harmonic termination circuit includes a first plurality of capacitors and a first plurality of switches, with at least one of the first plurality of capacitors being in electrical communication with at least one of the first plurality of switches. The power amplifier module further includes a controller configured to modify a configuration of the first plurality of switches of the first programmable harmonic termination circuit based at least in part on a second harmonic frequency of the signal.

    Multi-mode power amplifier
    6.
    发明授权
    Multi-mode power amplifier 有权

    公开(公告)号：US10587231B2

    公开(公告)日：2020-03-10

    申请号：US15865194

    申请日：2018-01-08

    申请人： Skyworks Solutions, Inc.

    发明人： Ying Shi ,  Jinghang Feng

    IPC分类号： H04M1/00 ,  H03F3/213 ,  H03F1/56 ,  H03F3/24 ,  H03F3/21 ,  H03F3/19 ,  H04W52/02 ,  H03F1/02 ,  H03F3/195 ,  H04W88/06 ,  H04B1/40

    摘要： A power amplifier module that includes a power amplifier and a controller is presented herein. The power amplifier module may include a set of transistor stages and a plurality of bias circuits. At least one transistor stage from the set of transistor stages may be in electrical communication with a first bias circuit and a second bias circuit from the plurality of bias circuits. The first bias circuit can be configured to apply a first bias voltage to the at least one transistor stage and the second bias circuit can be configured to apply a second bias voltage to the at least one transistor stage. The controller may be configured to activate one of the first bias circuit and the second bias circuit.

    PROGRAMMABLE LOW DROPOUT REGULATORS WITH FAST TRANSIENT RESPONSE WHEN PROGRAMMING OUTPUT VOLTAGE
    7.
    发明申请
    PROGRAMMABLE LOW DROPOUT REGULATORS WITH FAST TRANSIENT RESPONSE WHEN PROGRAMMING OUTPUT VOLTAGE 审中-公开

    公开(公告)号：US20190243403A1

    公开(公告)日：2019-08-08

    申请号：US16389248

    申请日：2019-04-19

    申请人： Skyworks Solutions, Inc.

    发明人： Netsanet Gebeyehu ,  Ying Shi ,  Jinghang Feng

    IPC分类号： G05F1/575

    CPC分类号： G05F1/575 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/336 ,  H03F2200/411 ,  H03F2200/451

    摘要： Apparatus and methods for programmable low dropout regulators for radio frequency (RF) electronics are provided herein. In certain configurations, a power amplifier system includes a multi-stage power amplifier that amplifies a radio frequency signal and includes a driver stage and an output stage. The power amplifier system further includes an envelope tracker that controls a supply voltage of the output stage in relation to an envelope of the radio frequency signal, and a programmable low dropout regulator that includes an output that provides a programmable supply voltage to the driver stage. The programmable low dropout regulator includes an output capacitor electrically connected to the output, a regulation transistor having a drain electrically connected to the output, and an alternative discharge circuit that discharges the output capacitor in response to programming the programmable supply voltage from a high voltage level to a low voltage level.

    Systems, circuits and methods related to controllers for radio-frequency power amplifiers
    10.
    发明授权
    Systems, circuits and methods related to controllers for radio-frequency power amplifiers 有权
    与射频功率放大器控制器相关的系统，电路和方法

    公开(公告)号：US09093969B2

    公开(公告)日：2015-07-28

    申请号：US13967329

    申请日：2013-08-14

    申请人： SKYWORKS SOLUTIONS, INC.

    发明人： Netsanet Gebeyehu ,  Ying Shi ,  Reza Kasnavi ,  Onder Oz ,  Jinghang Feng

    IPC分类号： H03F3/04 ,  H03G3/30

    CPC分类号： H03F1/0233 ,  H03F3/195 ,  H03F3/213 ,  H03F2200/423 ,  H03F2200/451 ,  H03F2200/462 ,  H03F2200/528 ,  H03G3/30 ,  H03G3/3042

    摘要： Disclosed are systems, circuits and methods related to controlling of a radio-frequency (RF) power amplifier (PA). In some embodiments, a PA control circuit can include a first circuit configured to generate a replica base current from a base current provided to the PA, with the replica base current being representative of a collector current of the PA scaled by a beta parameter. The PA control circuit can further include a second circuit configured to generate a beta-tracking reference current from a temperature-compensated voltage and a base resistance associated with the PA. The PA control circuit can further include a current steering circuit configured to receive the replica base current and the beta-tracking reference current and generate a proportional current to a clamping node of a base driver. In some embodiments, the replica base current can be obtained by a current-mode comparison of a finger-sensed current with a ramp current.

    摘要翻译： 公开了与控制射频（RF）功率放大器（PA）相关的系统，电路和方法。 在一些实施例中，PA控制电路可以包括被配置为从提供给PA的基极电流产生复制基极电流的第一电路，其中复制基极电流代表由β参数缩放的PA的集电极电流。 PA控制电路还可以包括被配置为从温度补偿电压和与PA相关联的基极电阻产生β跟踪参考电流的第二电路。 PA控制电路还可以包括配置成接收复制基极电流和β跟踪参考电流的电流转向电路，并产生一个比例电流到基本驱动器的钳位节点。 在一些实施例中，可以通过手指感测电流与斜坡电流的电流模式比较来获得复制基极电流。