公开(公告)号：US09871488B2

公开(公告)日：2018-01-16

申请号：US14608121

申请日：2015-01-28

申请人： QUALCOMM Incorporated

发明人： Saihua Lin

IPC分类号： H03F1/02 ,  H03F3/19 ,  H03F3/217 ,  H04W52/52 ,  H04W52/02 ,  H04B1/401 ,  H03F3/193 ,  H03F3/24 ,  H03F3/45 ,  H03F3/72 ,  H03G1/00 ,  H03G3/30 ,  H04W88/06

CPC分类号： H03F1/0205 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/193 ,  H03F3/217 ,  H03F3/245 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/09 ,  H03F2200/411 ,  H03F2200/451 ,  H03F2200/507 ,  H03F2203/21142 ,  H03F2203/45554 ,  H03F2203/45731 ,  H03F2203/7236 ,  H03F2203/7239 ,  H03G1/0088 ,  H03G3/3042 ,  H04B1/401 ,  H04W52/0251 ,  H04W52/52 ,  H04W88/06 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/162 ,  Y02D70/166

摘要： A method and apparatus for transmitting a communication signal through a dual-mode power amplifier may include amplifying a communication signal by a first amplifier and/or a second amplifier of the dual-mode power amplifier based on a desired transmit output power. The output of the first amplifier may be selectively coupled through a configurable inductive coupler to an antenna.

公开(公告)号：US09837972B2

公开(公告)日：2017-12-05

申请号：US15393692

申请日：2016-12-29

申请人： SKYWORKS SOLUTIONS, INC.

发明人： Roman Zbigniew Arkiszewski ,  Onder Oz ,  Jianxing Ni

IPC分类号： H03F3/24 ,  H03F3/193 ,  H04W88/06

CPC分类号： H03F3/245 ,  H03F1/0277 ,  H03F1/56 ,  H03F3/193 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/387 ,  H03F2200/408 ,  H03F2200/451 ,  H03F2200/507 ,  H03F2203/7209 ,  H03F2203/7227 ,  H03F2203/7236 ,  H04W88/06

摘要： A power amplifier that can support multiple communication networks while maintaining power efficiency across each of the supported communication networks is disclosed. In some implementations described herein, a power amplifier module includes a bypass circuit that enables different voltage supplies to be provided to the power amplifier. By regulating the voltage supply provided to the power amplifier, the power amplifier can support different communication networks while maintaining power efficiency across a dynamic frequency range. Moreover, embodiments herein may include a buck converter, or other form of DC-DC converter, that enables the power amplifier to operate with respect to multiple communication networks. Advantageously, in certain embodiments, because wireless devices that include multiple power amplifiers often require a DC-DC converter to support at least some of the communication networks, the inclusion of the buck converter in the embodiments described herein does not add additional cost or size to the wireless device.

公开(公告)号：US20170288612A1

公开(公告)日：2017-10-05

申请号：US15477246

申请日：2017-04-03

申请人： Qorvo US, Inc.

发明人： Nadim Khlat ,  Baker Scott ,  Michael R. Kay

IPC分类号： H03F1/02 ,  H03F3/24 ,  H03F1/48 ,  H03F3/19

CPC分类号： H03F1/0244 ,  H03F1/0227 ,  H03F1/0266 ,  H03F1/486 ,  H03F3/19 ,  H03F3/217 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/375 ,  H03F2200/432 ,  H03F2200/451 ,  H03F2200/507 ,  H03F2200/555

摘要： An envelope tracking power supply, which includes a parallel amplifier, switching circuitry, and a parallel switching supply, is disclosed. The envelope tracking power supply provides an envelope power supply signal to a load. The parallel amplifier regulates an envelope power supply voltage of the envelope power supply signal based on a setpoint of the envelope power supply voltage. The switching circuitry at least partially provides the envelope power supply signal via a first inductive element and drives an output current from the parallel amplifier toward zero. The parallel switching supply provides an assist current to further drive the output current from the parallel amplifier toward zero based on an estimate of a current in the first inductive element and an estimate of a current in the load.

公开(公告)号：US09705458B1

公开(公告)日：2017-07-11

申请号：US14812405

申请日：2015-07-29

申请人： Cirrus Logic, Inc.

发明人： John Christopher Tucker ,  Daniel John Allen ,  John L. Melanson ,  Ammisetti Prasad

IPC分类号： H03G3/00 ,  H03G3/30 ,  H03F3/183

CPC分类号： H03G3/004 ,  H02M3/07 ,  H03F1/0227 ,  H03F1/025 ,  H03F3/183 ,  H03F2200/03 ,  H03F2200/211 ,  H03F2200/507 ,  H03G3/20 ,  H03G3/3031

摘要： An energy-efficient consumer device audio power output stage with gain control provides improved battery life and reduced power dissipation without clipping the audio output signal. A control circuit controls a power supply that supplies the power supply rails to the power amplified output stage. The voltage of the power supply rails is controlled in conformity with an input audio signal level, which may be determined from a volume control setting of the device and/or from a signal level detector that determines the amplitude of the signal being amplified. The gain applied to the audio input signal is reduced for a predetermined time period when a higher output voltage of the power supply is selected, to avoid clipping the audio output signal.

公开(公告)号：US09685981B2

公开(公告)日：2017-06-20

申请号：US14641031

申请日：2015-03-06

申请人： APPLE INC.

发明人： Ehsan Adabi ,  Albert C. Jerng

IPC分类号： H04B1/04 ,  H03F1/02 ,  H03F3/195 ,  H03F3/21 ,  H03F3/217 ,  H03F3/24 ,  H03F3/72

CPC分类号： H04B1/0458 ,  H03F1/0222 ,  H03F1/0277 ,  H03F3/195 ,  H03F3/211 ,  H03F3/2178 ,  H03F3/24 ,  H03F3/245 ,  H03F3/72 ,  H03F2200/507 ,  H04B1/0475 ,  H04B2001/0408

摘要： Systems and method for improving operation of a radio frequency system are provided. One embodiment provides a radio frequency system that includes a first amplifier unit with a first logic gate, which receives an input analog electrical signal and a first bit of an amplifier control signal that enables or disables the first amplifier unit, and a first switching power amplifier that generates a first output analog electrical signal when enabled. The radio frequency system further includes a second amplifier unit with a second logic gate, which receives the input analog electrical signal and a second bit of the amplifier control signal that enables or disables the second amplifier unit, and a second switching power amplifier that generates a second output analog electrical signal when enabled. The first amplifier unit and the second amplifier unit are electrically coupled to enable the first output analog electrical signal and the second output analog electrical signal to be combined.

公开(公告)号：US09634621B1

公开(公告)日：2017-04-25

申请号：US14035654

申请日：2013-09-24

申请人： Cirrus Logic, Inc.

发明人： Anand Ilango ,  Aniruddha Satoskar ,  Daniel John Allen ,  Bharath Kumar Thandri

IPC分类号： H03F3/20

CPC分类号： H03F1/0227 ,  H02M3/07 ,  H02M2001/0032 ,  H03F1/025 ,  H03F3/3022 ,  H03F3/505 ,  H03F2200/03 ,  H03F2200/211 ,  H03F2200/507 ,  Y02B70/16

摘要： A method may include providing a power supply voltage to a power supply input of a power amplifier by a charge pump power supply having a select input for selecting an operating mode of the charge pump power supply, such that in a first operating mode, the power supply voltage is equal to a first voltage, and such that in a second operating mode the power supply voltage is equal to a fraction of the first voltage; wherein the power amplifier has an audio input for receiving an audio input signal, and an audio output for providing the output signal, and generates the output signal based on the audio input signal. The method may also include selecting an operating mode of the charge pump power supply based on a magnitude of the power supply voltage and a magnitude of the output signal, such that the charge pump power supply operated in the operating mode having the lowest power supply voltage in which a difference between a magnitude of the power supply voltage and a magnitude of the output signal is more than the predetermined threshold voltage.

公开(公告)号：US09571040B2

公开(公告)日：2017-02-14

申请号：US14380492

申请日：2013-02-06

申请人： Yamaha Corporation

发明人： Morito Yamada

IPC分类号： H03F21/00 ,  H03F1/02 ,  H03F1/30 ,  H03F3/183 ,  H03F3/21 ,  H03G7/00

CPC分类号： H03F1/0222 ,  H03F1/0244 ,  H03F1/025 ,  H03F1/305 ,  H03F3/183 ,  H03F3/21 ,  H03F2200/03 ,  H03F2200/504 ,  H03F2200/507 ,  H03F2200/511 ,  H03G7/002 ,  H03G7/007

摘要： An audio amplifier is provided with: an amplifier circuit; a power supply circuit that generates a plurality of power supply voltages; a power supply relay that selects one of the power supply voltages as the power supply voltage supplied to the amplifier circuit; a switching condition determiner that determines whether the switching condition of the power supply relay is satisfied; a silent section detector that detects a silent section of the audio signal which is equal to or greater than the operation time of the power supply relay; and a switching instruction unit for providing the power supply relay with an instruction for switching the power supply voltage during the silent section when the switching condition is satisfied and the silent section is detected.

摘要翻译： 音频放大器具有：放大电路; 产生多个电源电压的电源电路; 电源继电器，其选择所述电源电压之一作为提供给所述放大器电路的电源电压; 确定电源继电器的开关状态是否满足的开关条件确定器; 静音部分检测器，其检测所述音频信号的静音部分等于或大于所述电源继电器的操作时间; 以及切换指示单元，用于在满足切换条件并且检测到静音部分时向电源继电器提供用于在无声部分期间切换电源电压的指令。

公开(公告)号：US09515622B2

公开(公告)日：2016-12-06

申请号：US14581890

申请日：2014-12-23

申请人： Nokia Corporation

发明人： Markus Nentwig ,  Mikko Kaltiokallio

IPC分类号： H03F3/68 ,  H03F3/21 ,  H03F3/19 ,  H03F1/02 ,  H03F3/195 ,  H03F3/24 ,  H03F3/72

CPC分类号： H03F3/211 ,  H03F1/0222 ,  H03F1/0266 ,  H03F1/0277 ,  H03F3/19 ,  H03F3/195 ,  H03F3/245 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/03 ,  H03F2200/102 ,  H03F2200/105 ,  H03F2200/111 ,  H03F2200/27 ,  H03F2200/411 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2200/507 ,  H03F2203/21196 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7227 ,  H03F2203/7236

摘要： In some example embodiments, there is provided an apparatus. The apparatus may include a direct current voltage source and/or an alternating current voltage source to track a power envelope of a radio frequency signal. The apparatus may further include first and second power amplifiers with bias voltage inputs and a supply voltage inputs, and a switch matrix. The first input may be coupled to the direct current voltage source, the second input may be coupled to the alternating current voltage source. The outputs may be coupled to the bias and supply inputs to the power amplifiers. The switch matrix may enable activation of the first power amplifier, the second power amplifier, both the first and second power amplifiers, or neither power amplifier.

摘要翻译： 在一些示例性实施例中，提供了一种装置。 该装置可以包括直流电压源和/或交流电压源以跟踪射频信号的功率包络。 该装置还可以包括具有偏置电压输入和电源电压输入的第一和第二功率放大器以及开关矩阵。 第一输入可以耦合到直流电压源，第二输入可以耦合到交流电压源。 输出可以耦合到功率放大器的偏置和电源输入。 开关矩阵可以使得能够激活第一功率放大器，第二功率放大器，第一和第二功率放大器，或者两个功率放大器。

公开(公告)号：US09425744B2

公开(公告)日：2016-08-23

申请号：US14625653

申请日：2015-02-19

申请人： Research & Business Foundation SUNGKYUNKWAN UNIVERSITY

发明人： Youngoo Yang ,  Junghyun Ham ,  Hearyun Jung

IPC分类号： H03G3/20 ,  H03F1/02 ,  H03F3/19 ,  H03F3/21 ,  H03F3/217 ,  H03F1/30

CPC分类号： H03F1/0205 ,  H03F1/0211 ,  H03F1/0222 ,  H03F1/0227 ,  H03F1/305 ,  H03F3/19 ,  H03F3/211 ,  H03F3/217 ,  H03F2200/102 ,  H03F2200/451 ,  H03F2200/507 ,  H03F2203/21127 ,  H03G3/20

摘要： A multi-mode bias modulator operating in envelope tracking mode or average power tracking mode and an envelope tracking power amplifier using the same are disclosed. The envelope tracking power amplifier includes a multi-mode bias modulator and a power amplifier. The multi-mode bias modulator generates a variable bias voltage using a linear amplifier and a switching amplifier operating in envelope tracking mode or average power tracking mode in accordance with an operation mode control signal that determines any one of envelope tracking mode and average power tracking mode. The power amplifier is biased in response to the variable bias voltage, power-amplifies a radio frequency (RF) signal, and outputs the amplified RF signal to an antenna.

摘要翻译： 公开了以包络跟踪模式或平均功率跟踪模式工作的多模偏置调制器和使用其的包络跟踪功率放大器。 包络跟踪功率放大器包括多模偏置调制器和功率放大器。 多模式偏置调制器根据确定包络跟踪模式和平均功率跟踪模式中的任何一种的操作模式控制信号，使用线性放大器和以包络跟踪模式或平均功率跟踪模式工作的开关放大器产生可变偏置电压 。 功率放大器响应于可变偏置电压而被偏置，功率放大射频（RF）信号，并将放大的RF信号输出到天线。

公开(公告)号：US09154090B2

公开(公告)日：2015-10-06

申请号：US13895236

申请日：2013-05-15

申请人： MICROSEMI CORPORATION

发明人： Kyle Hershberger

IPC分类号： H03F1/14 ,  H03F3/21 ,  H03G3/00 ,  H03F1/30 ,  H03F3/19 ,  H03G3/30 ,  H03G1/00 ,  H03F3/45 ,  H03F3/72 ,  H03F1/02

CPC分类号： H03F3/21 ,  H03F1/0261 ,  H03F1/0266 ,  H03F1/0277 ,  H03F1/305 ,  H03F3/19 ,  H03F3/45475 ,  H03F3/72 ,  H03F2200/18 ,  H03F2200/321 ,  H03F2200/504 ,  H03F2200/507 ,  H03G1/0088 ,  H03G3/004 ,  H03G3/3042 ,  H03G3/3047

摘要： Devices and methods for correcting for start-up transients in integrated power amplifiers are disclosed. A delay element is arranged to produce a delay waveform signal that is responsive to an input voltage signal. A transconductance element has an input that receives the delay waveform signal and is arranged to provide an output boost current that is based on the delay waveform signal and a gain of the transconductance element. A reference element provides an output bias current that is responsive to a static reference current and the boost current. A bias element has an input that receives the bias current and is arranged to provide a bias control output. A power amplifier is responsive to the bias control output and is arranged to provide an amplified power output.

摘要翻译： 公开了用于校正集成功率放大器中的起动瞬变的装置和方法。 延迟元件被布置成产生响应于输入电压信号的延迟波形信号。 跨导元件具有接收延迟波形信号的输入，并且被布置成提供基于延迟波形信号和跨导元件的增益的输出升压电流。 参考元件提供响应于静态参考电流和升压电流的输出偏置电流。 偏置元件具有接收偏置电流的输入，并且被布置成提供偏置控制输出。 功率放大器响应于偏置控制输出并被布置成提供放大的功率输出。