公开(公告)号：US09459645B2

公开(公告)日：2016-10-04

申请号：US13689922

申请日：2012-11-30

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Michael R. Kay

IPC: G05F3/24 ,  G05F1/575 ,  H02M3/156 ,  G05F3/04 ,  G05F3/06 ,  G05F3/02 ,  H02M1/14 ,  H02M3/155 ,  H02M3/158

Abstract: Embodiments of circuitry, which includes power supply switching circuitry and a first inductive element, are disclosed. The power supply switching circuitry has a first switching output and a second switching output. The first inductive element is coupled between the first switching output and a power supply output. The power supply switching circuitry operates in one of a first operating mode and a second operating mode. During the first operating mode, the first switching output is voltage compatible with the second switching output. During the second operating mode, the first switching output is allowed to be voltage incompatible with the second switching output.

公开(公告)号：US09450539B2

公开(公告)日：2016-09-20

申请号：US14163256

申请日：2014-01-24

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Michael R. Kay ,  Manbir Singh Nag

IPC: H01Q11/12 ,  H04B1/04 ,  H03F3/189 ,  H03F1/02 ,  H03F3/195 ,  H03F3/24 ,  H02M1/00

Abstract: A parallel amplifier and an offset capacitance voltage control loop are disclosed. The parallel amplifier has a parallel amplifier output, which is coupled to an envelope tracking power supply output via an offset capacitive element. The offset capacitive element has an offset capacitive voltage. The offset capacitance voltage control loop regulates the offset capacitive voltage, which is adjustable on a communications slot-to-communications slot basis.

公开(公告)号：US09423813B2

公开(公告)日：2016-08-23

申请号：US13689922

申请日：2012-11-30

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Michael R. Kay

IPC: G05F3/24 ,  G05F1/575 ,  H02M3/156 ,  G05F3/04 ,  G05F3/06 ,  G05F3/02 ,  H02M1/14 ,  H02M3/155 ,  H02M3/158

Abstract: Embodiments of circuitry, which includes power supply switching circuitry and a first inductive element, are disclosed. The power supply switching circuitry has a first switching output and a second switching output. The first inductive element is coupled between the first switching output and a power supply output. The power supply switching circuitry operates in one of a first operating mode and a second operating mode. During the first operating mode, the first switching output is voltage compatible with the second switching output. During the second operating mode, the first switching output is allowed to be voltage incompatible with the second switching output.

公开(公告)号：US09207692B2

公开(公告)日：2015-12-08

申请号：US14056292

申请日：2013-10-17

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Michael R. Kay ,  Mohammad Ahsanul Adeeb

IPC: H04B1/04 ,  G05F1/46 ,  H03F1/02 ,  H03F3/189 ,  H03F3/24

CPC classification number: G05F1/46 ,  H03F1/0211 ,  H03F1/0227 ,  H03F1/3223 ,  H03F3/189 ,  H03F3/24 ,  H03F2200/102 ,  H03F2200/432 ,  H04B2001/0441

Abstract: An envelope tracking power supply and an offset capacitive element are disclosed. The offset capacitive element is coupled between a switching output and an analog output of the envelope tracking power supply, which operates in one of an envelope tracking mode, a transition mode, and an average power tracking mode. During the envelope tracking mode, the envelope tracking power supply provides an envelope power supply signal using both the switching output and the analog output. During the transition mode, the envelope tracking power supply drives a voltage across the offset capacitive element from a first voltage to a second voltage, such that during a transition from the envelope tracking mode to the transition mode, the offset capacitive element has the first voltage, and during a transition from the transition mode to the average power tracking mode, the offset capacitive element has the second voltage.

Abstract translation: 公开了一种包络跟踪电源和偏移电容元件。 偏移电容元件耦合在包络跟踪电源的开关输出和模拟输出之间，其以包络跟踪模式，转换模式和平均功率跟踪模式之一工作。 在包络跟踪模式期间，包络跟踪电源使用开关输出和模拟输出两者提供包络电源信号。 在转换模式期间，包络跟踪电源将偏移电容元件上的电压从第一电压驱动到第二电压，使得在从包络跟踪模式转换到转换模式期间，偏移电容元件具有第一电压 ，并且在从转换模式到平均功率跟踪模式的转变期间，偏移电容元件具有第二电压。

公开(公告)号：US09178472B2

公开(公告)日：2015-11-03

申请号：US14176611

申请日：2014-02-10

Applicant: RF Micro Devices, Inc.

Inventor： Andrew F. Folkmann ,  Nadim Khlat ,  Michael R. Kay

IPC: H03G3/20 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21 ,  H03F3/24

CPC classification number: H03F1/0222 ,  H03F1/0227 ,  H03F3/19 ,  H03F3/21 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/451

Abstract: Circuitry, which includes a linear amplifier, is disclosed. The linear amplifier has a linear amplifier output and includes an input amplifier stage and an output amplifier stage. The output amplifier stage at least partially provides an envelope power supply voltage to a radio frequency (RF) power amplifier (PA) via an envelope power supply output using a selected one of a group of linear amplifier power supply signals. The group of linear amplifier power supply signals includes at least a first bi-directional power supply signal. The input amplifier stage selects the one of the group of linear amplifier power supply signals based on the envelope power supply voltage and a setpoint of the envelope power supply voltage.

Abstract translation: 公开了包括线性放大器的电路。 线性放大器具有线性放大器输出，并包括输入放大级和输出放大级。 输出放大器级至少部分地通过使用一组线性放大器电源信号中选定的一个的包络电源输出向射频（RF）功率放大器（PA）提供包络电源电压。 线性放大器电源信号组至少包括第一双向电源信号。 输入放大器级基于包络电源电压和包络电源电压的设定点来选择一组线性放大器电源信号。

公开(公告)号：US20150234402A1

公开(公告)日：2015-08-20

申请号：US14702192

申请日：2015-05-01

Applicant: RF Micro Devices, Inc.

Inventor： Michael R. Kay ,  Nadim Khlat

IPC: G05F1/46

CPC classification number: G05F1/468 ,  H02M1/10 ,  H02M2001/0067 ,  H03F1/0211 ,  H03F1/0227 ,  H03F1/26 ,  H03F3/24 ,  H03F2200/351 ,  H03F2200/451 ,  H03F2200/504 ,  H04B15/005

Abstract: This disclosure relates to radio frequency (RF) power converters and methods of operating the same. In one embodiment, an RF power converter includes an RF switching converter, a low-drop out (LDO) regulation circuit, and an RF filter. The RF filter is coupled to receive a pulsed output voltage from the RF switching converter and a supply voltage from the LDO regulation circuit. The RF filter is operable to alternate between a first RF filter topology and a second RF filter topology. In the first RF filter topology, the RF filter is configured to convert the pulsed output voltage from a switching circuit into the supply voltage. The RF filter in the second RF filter topology is configured to filter the supply voltage from the LDO regulation circuit to reduce a ripple variation in a supply voltage level of the supply voltage. As such, the RF filter provides greater versatility.

Abstract translation: 本公开涉及射频（RF）功率转换器及其操作方法。 在一个实施例中，RF功率转换器包括RF开关转换器，低压降（LDO）调节电路和RF滤波器。 RF滤波器被耦合以接收来自RF开关转换器的脉冲输出电压和来自LDO调节电路的电源电压。 RF滤波器可操作以在第一RF滤波器拓扑和第二RF滤波器拓扑之间交替。 在第一RF滤波器拓扑中，RF滤波器被配置为将来自开关电路的脉冲输出电压转换成电源电压。 第二RF滤波器拓扑中的RF滤波器被配置为对来自LDO调节电路的电源电压进行滤波，以减少电源电压的电源电压电平中的纹波变化。 因此，RF滤波器提供更大的通用性。

公开(公告)号：US20140055197A1

公开(公告)日：2014-02-27

申请号：US14072140

申请日：2013-11-05

Applicant: RF Micro Devices, Inc.

Inventor： Nadim Khlat ,  Michael R. Kay ,  Phillippe Gorisse ,  Christopher Truong Ngo

IPC: H03G3/30

CPC classification number: H03G3/3042 ,  H02M3/07 ,  H02M3/158 ,  H02M2001/0032 ,  H03F1/0227 ,  H03F3/24 ,  H03F3/45663 ,  Y02B70/16

Abstract: A power management system, which includes a parallel amplifier circuit and a switch mode power supply converter, is disclosed. The switch mode power supply converter cooperatively operates with the parallel amplifier circuit to form the power management system. The power management system operates in one of a high power modulation mode, a medium power modulation mode, and a low power average power tracking mode. Further, during the high power modulation mode and the medium power modulation mode, the power management system controls a power amplifier supply voltage to a radio frequency power amplifier to provide envelope tracking. During the low power average power tracking mode, the power management system controls the power amplifier supply voltage to the radio frequency power amplifier to provide average power tracking.

Abstract translation: 公开了一种电源管理系统，其包括并联放大器电路和开关模式电源转换器。 开关模式电源转换器与并行放大器电路协同工作，形成电源管理系统。 电源管理系统以高功率调制模式，中等功率调制模式和低功率平均功率跟踪模式之一工作。 此外，在高功率调制模式和中等功率调制模式期间，电力管理系统控制向射频功率放大器的功率放大器电源电压以提供包络跟踪。 在低功率平均功率跟踪模式下，电源管理系统控制功率放大器对射频功率放大器的电源电压，以提供平均功率跟踪。

公开(公告)号：US20140009227A1

公开(公告)日：2014-01-09

申请号：US14022858

申请日：2013-09-10

Applicant: RF Micro Devices, Inc.

Inventor： Michael R. Kay ,  Nadim Khlat

IPC: H03F1/02

CPC classification number: H03F1/02 ,  H02M3/07 ,  H03F1/0244 ,  H03F1/025 ,  H03F1/0277 ,  H03F1/42 ,  H03F3/195 ,  H03F3/245 ,  H03F3/3022 ,  H03F3/45475 ,  H03F3/505 ,  H03F3/72 ,  H03F2200/102 ,  H03F2200/204 ,  H03F2200/36 ,  H03F2200/375 ,  H03F2200/451 ,  H03F2200/555 ,  H03F2200/78 ,  H03F2203/45526 ,  H03F2203/45544 ,  H03F2203/45594 ,  H03F2203/45694 ,  H03F2203/45712 ,  H03F2203/45718 ,  H03F2203/7221

Abstract: A switch mode power supply converter, a parallel amplifier, and a parallel amplifier output impedance compensation circuit are disclosed. The switch mode power supply converter provides a switching voltage and generates an estimated switching voltage output, which is indicative of the switching voltage. The parallel amplifier generates a power amplifier supply voltage at a power amplifier supply output based on a compensated VRAMP signal. The parallel amplifier output impedance compensation circuit provides the compensated VRAMP signal based on a combination of a VRAMP signal and a high frequency ripple compensation signal. The high frequency ripple compensation signal is based on a difference between the VRAMP signal and the estimated switching voltage output.

Abstract translation: 公开了开关模式电源转换器，并联放大器和并联放大器输出阻抗补偿电路。 开关模式电源转换器提供开关电压并产生表示开关电压的估计开关电压输出。 并联放大器基于经补偿的VRAMP信号在功率放大器电源输出端产生功率放大器电源电压。 并联放大器输出阻抗补偿电路根据VRAMP信号和高频纹波补偿信号的组合提供经补偿的VRAMP信号。 高频纹波补偿信号基于VRAMP信号与估计的开关电压输出之间的差值。

公开(公告)号：US20130328613A1

公开(公告)日：2013-12-12

申请号：US13914888

申请日：2013-06-11

Applicant: RF Micro Devices, Inc.

Inventor： Michael R. Kay ,  Manbir Singh Nag ,  Philippe Gorisse

IPC: H03K17/687

CPC classification number: H03K17/687 ,  G06F1/263 ,  Y10T307/50

Abstract: Circuitry, which includes a first switching transistor element having a first gate, a second switching transistor element having a second gate, a third switching transistor element having a third gate, and a fourth switching transistor element having a fourth gate, is disclosed. The first switching transistor element and the third switching transistor element are coupled in series between a first power source and a first downstream circuit. The second switching transistor element and the fourth switching transistor element are coupled in series between a second power source and the first downstream circuit. A voltage swing at the first gate and a voltage swing at the second gate are both about equal to a first voltage magnitude. A voltage swing at the third gate and a voltage swing at the fourth gate are both about equal to a second voltage magnitude.

Abstract translation: 公开了一种电路，其包括具有第一栅极的第一开关晶体管元件，具有第二栅极的第二开关晶体管元件，具有第三栅极的第三开关晶体管元件和具有第四栅极的第四开关晶体管元件。 第一开关晶体管元件和第三开关晶体管元件串联耦合在第一电源和第一下游电路之间。 第二开关晶体管元件和第四开关晶体管元件串联耦合在第二电源和第一下游电路之间。 第一栅极处的电压摆动和第二栅极处的电压摆动都大致等于第一电压幅度。 第三栅极处的电压摆动和第四栅极处的电压摆动大约等于第二电压幅度。