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公开(公告)号：US09024688B2
公开(公告)日：2015-05-05
申请号：US13782142
申请日：2013-03-01
CPC分类号： G05F1/46 , H03F1/02 , H03F1/0266 , H03F3/195 , H03F3/24 , H03F2200/432 , H03F2200/555
摘要： A direct current (DC)-DC converter, which includes switching circuitry, a first parallel amplifier, and a second parallel amplifier, is disclosed. The switching circuitry has a switching circuitry output. The first parallel amplifier has a first feedback input and a first parallel amplifier output. The second parallel amplifier has a second feedback input and a second parallel amplifier output. A first inductive element is coupled between the switching circuitry output and the first feedback input. A second inductive element is coupled between the first feedback input and the second feedback input.
摘要翻译： 公开了一种直流（DC）-DC转换器，其包括开关电路，第一并联放大器和第二并联放大器。 开关电路具有开关电路输出。 第一并联放大器具有第一反馈输入和第一并联放大器输出。 第二并联放大器具有第二反馈输入和第二并联放大器输出。 第一电感元件耦合在开关电路输出和第一反馈输入之间。 第二感应元件耦合在第一反馈输入和第二反馈输入之间。
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公开(公告)号：US20160191016A1
公开(公告)日：2016-06-30
申请号：US14757587
申请日：2015-12-23
CPC分类号： H03H9/542 , H01Q1/50 , H03H9/568 , H03H9/605 , H03H9/64 , H03H9/6483 , H04B1/04 , H04B1/10 , H04B1/16
摘要： RF circuitry, which includes a first acoustic RF resonator (ARFR), a first compensating ARFR, and a second compensating ARFR, is disclosed. The first compensating ARFR is coupled between a first inductive element and a first end of the first ARFR. The second compensating ARFR is coupled between a second inductive element and a second end of the first ARFR. The first inductive element and the second inductive element are negatively coupled to one another. The first compensating ARFR, the second compensating ARFR, the first inductive element, and the second inductive element at least partially compensate for a parallel capacitance of the first ARFR.
摘要翻译： 公开了包括第一声RF谐振器（ARFR），第一补偿ARFR和第二补偿ARFR的RF电路。 第一补偿ARFR耦合在第一电感元件和第一ARFR的第一端之间。 第二补偿ARFR耦合在第一电感元件和第一ARFR的第二端之间。 第一电感元件和第二电感元件彼此负耦合。 第一补偿ARFR，第二补偿ARFR，第一电感元件和第二电感元件至少部分地补偿第一ARFR的并联电容。
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公开(公告)号：US09178472B2
公开(公告)日：2015-11-03
申请号：US14176611
申请日：2014-02-10
发明人： Andrew F. Folkmann , Nadim Khlat , Michael R. Kay
CPC分类号： H03F1/0222 , H03F1/0227 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/451
摘要： 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.
摘要翻译： 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。
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4.发明申请DE-MULTIPLEXING A RADIO FREQUENCY INPUT SIGNAL USING OUTPUT TRANSFORMER CIRCUITRY 有权使用输出变压器电路解复用无线电频率输入信号公开(公告)号：US20140016517A1
公开(公告)日：2014-01-16
申请号：US14029015
申请日：2013-09-17
发明人： Nadim Khlat , Ruediger Bauder , Andrew F. Folkmann
IPC分类号： H04L5/14
CPC分类号： H04L5/14 , H04B1/0483
摘要： The present disclosure relates to de-multiplexing at least one RF input signal feeding RF power amplifier circuitry to create multiple de-multiplexed RF output signals, which may be used to provide RF transmit signals in an RF communications system. Output transformer circuitry is coupled to outputs from the RF power amplifier circuitry to provide the de-multiplexed RF output signals, which may support multiple modes, multiple frequency bands, or both. The de-multiplexed RF output signals may be used in place of RF switching elements in certain embodiments. As a result, RF front-end switching circuitry in the RF communications system may be simplified, thereby reducing insertion losses, reducing costs, reducing size, or any combination thereof. Additionally, the output transformer circuitry may provide load line transformation, output transistor biasing, or both to the RF power amplifier circuitry.
摘要翻译： 本公开涉及对至少一个馈送RF功率放大器电路的RF输入信号进行解复用以创建多个解复用RF输出信号，其可用于在RF通信系统中提供RF发射信号。 输出变压器电路耦合到来自RF功率放大器电路的输出，以提供解复用的RF输出信号，其可以支持多种模式，多个频带或两者。 在某些实施例中，解复用的RF输出信号可以用于代替RF开关元件。 结果，可以简化RF通信系统中的RF前端切换电路，从而减少插入损耗，降低成本，减小尺寸或其任何组合。 此外，输出变压器电路可以向RF功率放大器电路提供负载线变换，输出晶体管偏置或两者。
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公开(公告)号：US20170026064A1
公开(公告)日：2017-01-26
申请号：US15131417
申请日：2016-04-18
发明人： Nadim Khlat , Andrew F. Folkmann
CPC分类号： H04B1/006 , H03F3/24 , H04B1/0458 , H04B1/0475 , H04B2001/0408 , H04L5/14
摘要： A front-end module configured to cancel unwanted transmit spectrum at one or more receivers comprises at least one transmitter having a power amplifier and configured to transmit signals to an antenna. The front-end module also comprises at least one receiver to receive the transmit signals, wherein the at least one receiver receives at least a portion of unwanted transmit spectrum. A directional coupler couples at least a portion of a transmit output signal from the power amplifier to provide a coupled transmit output signal to signal conditioning circuitry associated with the at least one receiver and configured to condition the coupled transmit output signal to generate a conditioned transmit signal to provide to the at least one receiver, wherein the conditioned transmit signal at least partially cancels the unwanted transmit spectrum. The signal conditioning circuitry may adjust the amplitude and phase of the coupled transmit output signal.
摘要翻译： 被配置为在一个或多个接收器处消除不期望的发射频谱的前端模块包括具有功率放大器并被配置为向天线发送信号的至少一个发射机。 前端模块还包括至少一个用于接收发射信号的接收机，其中至少一个接收机接收不想要的发射频谱的至少一部分。 定向耦合器耦合来自功率放大器的发射输出信号的至少一部分，以将耦合的发射输出信号提供给与至少一个接收机相关联的信号调理电路，并且被配置为调节耦合的发射输出信号以产生经调节的发射信号 以提供给所述至少一个接收机，其中经调节的发射信号至少部分地消除不想要的发射频谱。 信号调节电路可以调整耦合的发射输出信号的振幅和相位。
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公开(公告)号：US09298198B2
公开(公告)日：2016-03-29
申请号：US13727911
申请日：2012-12-27
发明人： Michael R. Kay , Philippe Gorisse , Nadim Khlat , Andrew F. Folkmann , Manbir Singh Nag , Jean-Frederic Chiron
CPC分类号： G05F1/46 , H02M1/15 , H02M3/158 , H02M2001/0045 , H03F1/0227 , H03F1/0266 , H03F1/26 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2200/432
摘要： A direct current (DC)-DC converter, which includes a parallel amplifier, a radio frequency (RF) trap, and a switching supply, is disclosed. The switching supply includes switching circuitry and a first inductive element. The parallel amplifier has a feedback input and a parallel amplifier output. The switching circuitry has a switching circuitry output. The first inductive element is coupled between the switching circuitry output and the feedback input. The RF trap is coupled between the parallel amplifier output and a ground.
摘要翻译： 公开了一种包括并联放大器，射频（RF）陷阱和开关电源的直流（DC）-DC转换器。 开关电源包括开关电路和第一电感元件。 并联放大器具有反馈输入和并行放大器输出。 开关电路具有开关电路输出。 第一电感元件耦合在开关电路输出和反馈输入之间。 RF陷波器耦合在并行放大器输出和地之间。
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公开(公告)号：US09276784B2
公开(公告)日：2016-03-01
申请号：US14548129
申请日：2014-11-19
发明人： Andrew F. Folkmann , Nadim Khlat
CPC分类号： H04L25/08 , H03F1/0211 , H03F1/0261 , H03F1/0266 , H03F1/3247 , H03F3/19 , H03F3/245 , H03F2200/102 , H03F2201/3215 , H03F2201/3227
摘要： A baseband PA predistortion module, which includes a baseband combiner, a baseband PA correction circuit, and a baseband filter, is disclosed. The baseband PA correction circuit replicates behavior of an RF PA by processing a modulation data signal to provide a predistortion data signal. The behavior of the RF PA includes distortion. The modulation data signal is representative of an RF input signal to an RF PA and the predistortion data signal is representative of a correction needed at an output of the RF PA. The baseband filter receives and filters the predistortion data signal to provide a reduced predistortion data signal, such that a low frequency content of the reduced predistortion data signal is less than a low frequency content of the predistortion data signal. The baseband combiner receives and combines the modulation data signal and the reduced predistortion data signal to provide a baseband transmit signal.
摘要翻译： 公开了一种基带PA预失真模块，其包括基带组合器，基带PA校正电路和基带滤波器。 基带PA校正电路通过处理调制数据信号来复制RF PA的行为以提供预失真数据信号。 RF PA的行为包括畸变。 调制数据信号表示到RF PA的RF输入信号，并且预失真数据信号表示在RF PA的输出处所需的校正。 基带滤波器接收并过滤预失真数据信号以提供减少的预失真数据信号，使得减少的预失真数据信号的低频内容小于预失真数据信号的低频内容。 基带组合器接收并组合调制数据信号和减少的预失真数据信号以提供基带发射信号。
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公开(公告)号：US20140253244A1
公开(公告)日：2014-09-11
申请号：US14202493
申请日：2014-03-10
发明人： Andrew F. Folkmann
CPC分类号： H03F3/19 , H03F1/0244 , H03F1/3247 , H03F3/21 , H03F3/245 , H03F2200/411 , H03G3/3042
摘要： This disclosure relates generally to power amplification devices and methods of operating the same. The power amplification devices are capable of reducing (and possibly cancelling) modulation of a ripple variation of a supply voltage level of a supply voltage onto a radio frequency (RF) signal. In one embodiment, a power amplification device includes a power amplification circuit configured to amplify an RF signal with a supply voltage such that a ripple variation in a supply voltage level of the supply voltage is modulated onto the RF signal in accordance with a conversion gain. However, the power amplification device also includes a plurality of ripple rejection circuits. The plurality of ripple rejection circuits is configured to produce phase shifts and one or more amplitude shifts in the RF signal so as to reduce the conversion gain of the power amplification circuit.
摘要翻译： 本公开一般涉及功率放大装置及其操作方法。 功率放大装置能够减少（并且可能地消除）将电源电压的电源电压电平的纹波变化调制到射频（RF）信号上。 在一个实施例中，功率放大装置包括功率放大电路，功率放大电路被配置为利用电源电压放大RF信号，使得电源电压的电源电压电平的纹波变化根据转换增益被调制到RF信号上。 然而，功率放大装置还包括多个纹波抑制电路。 多个纹波抑制电路被配置为产生RF信号中的相移和一个或多个幅度偏移，以便降低功率放大电路的转换增益。
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公开(公告)号：US20140225674A1
公开(公告)日：2014-08-14
申请号：US14176611
申请日：2014-02-10
发明人： Andrew F. Folkmann , Nadim Khlat , Michael R. Kay
CPC分类号： H03F1/0222 , H03F1/0227 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/102 , H03F2200/451
摘要： 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.
摘要翻译： 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。
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公开(公告)号：US20130154729A1
公开(公告)日：2013-06-20
申请号：US13714600
申请日：2012-12-14
CPC分类号： H03G3/20 , H03F1/0288 , H03F3/189 , H03F3/68 , H03F3/72 , H03G3/3042
摘要： Radio frequency (RF) amplification devices and methods of amplifying RF signals are disclosed. In one embodiment, an RF amplification device includes a control circuit and a Doherty amplifier configured to amplify an RF signal. The Doherty amplifier includes a main RF amplification circuit and a peaking RF amplification circuit. The control circuit is configured to activate the peaking RF amplification circuit in response to the RF signal reaching a threshold level. In this manner, the activation of the peaking RF amplification circuit can be precisely controlled.
摘要翻译： 公开了射频（RF）放大装置和放大RF信号的方法。 在一个实施例中，RF放大装置包括配置成放大RF信号的控制电路和Doherty放大器。 Doherty放大器包括主RF放大电路和峰值RF放大电路。 控制电路被配置为响应于RF信号达到阈值水平激活峰值RF放大电路。 以这种方式，可以精确地控制峰值RF放大电路的激活。
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