公开(公告)号：US09281972B2

公开(公告)日：2016-03-08

申请号：US14595619

申请日：2015-01-13

Applicant: Telefonaktiebolaget L M Ericsson (publ)

Inventor： Mark Edward Rollins

IPC: H04L25/08 ,  H03F1/32 ,  H03F3/24 ,  H04L27/36

CPC classification number: H04B1/0475 ,  H03F1/3247 ,  H03F1/3252 ,  H03F1/3294 ,  H03F3/24 ,  H03F2200/111 ,  H03F2201/3203 ,  H04B2001/0425 ,  H04L25/08 ,  H04L27/368

Abstract: Systems and methods for radio frequency digital predistortion in a multi-band transmitter are disclosed. In one embodiment, the multi-band transmitter includes a digital upconversion system configured to digitally upconvert digital input signals to provide digital radio frequency signals. Each digital input signal and thus each digital radio frequency signal corresponds to a different band of a multi-band transmit signal to be transmitted by the multi-band transmitter. The multi-band transmitter also includes a radio frequency digital predistortion system configured to digitally predistort the digital radio frequency signals to provide predistorted digital radio frequency signals, and a combiner configured to combine the predistorted digital radio frequency signals to provide a multi-band predistorted digital radio frequency signal.

公开(公告)号：US20150145603A1

公开(公告)日：2015-05-28

申请号：US14140309

申请日：2013-12-24

Applicant: The Aerospace Corporation

Inventor： Adam Wayne Bushmaker

IPC: H03F1/32

CPC classification number: H03F3/193 ,  H03F1/0272 ,  H03F1/3205 ,  H03F2200/294 ,  H03F2200/504 ,  H03F2200/516 ,  H03F2201/3203 ,  H03F2201/3215

Abstract: A system linearization assembly generally includes a delay device that receives an input signal from a signal source and delays the input signal by a predetermined delay function. An attenuation device receives a modified output signal from a signal modifying device, wherein the output signal is based on the input signal and includes a time varying parameter representing a plurality of frequency components including at least one component caused by non-linear intermodulation distortion. The attenuation device attenuates the output signal by a factor that is equal to at least one parameter of the modifying device. A computing device compares the attenuated output signal with the delayed input signal to obtain a resultant signal that includes the component caused by non-linear intermodulation distortion. A detection device detects at least one parameter of the resultant signal. Based on the detected parameter, a controller facilitates a modification of the component.

Abstract translation: 系统线性化组件通常包括延迟装置，其接收来自信号源的输入信号并且将输入信号延迟预定的延迟功能。 衰减装置从信号修改装置接收经修改的输出信号，其中所述输出信号基于所述输入信号，并且包括表示包括由非线性互调失真引起的至少一个分量的多个频率分量的时变参数。 衰减装置以等于修改装置的至少一个参数的因子衰减输出信号。 计算装置将衰减的输出信号与延迟的输入信号进行比较，以获得包括由非线性互调失真引起的分量的合成信号。 检测装置检测所得信号的至少一个参数。 基于检测到的参数，控制器便于修改组件。

公开(公告)号：US06700444B2

公开(公告)日：2004-03-02

申请号：US10059866

申请日：2002-01-28

Applicant: Raymond Sydney Pengelly

Inventor： Raymond Sydney Pengelly

IPC: H03F368

CPC classification number: H03F1/32 ,  H03F1/0277 ,  H03F1/0288 ,  H03F3/602 ,  H03F2201/3203

Abstract: An RF power amplifier for amplifying an RF signal over a broad range of power with improved efficiency includes a main amplifier for amplifying an RF signal over a first range of power and with a power saturation level below the maximum of the broad range of power. A plurality of auxiliary amplifiers are connected in parallel with the main amplifier with each of the auxiliary amplifiers being biased to sequentially provide an amplified output signal after the main amplifier approaches saturation. The input signal is applied through a signal splitter to the main amplifier and the plurality of auxiliary amplifiers, and an output for receiving amplified output signals from the main amplifier and the plurality of auxiliary amplifiers includes a resistive load R/2. The split input signal is applied through a 90° transformer to the main amplifier, and the outputs of the auxiliary amplifiers are applied through 90° transformers to a output load. When operating below saturation, the main amplifier delivers power to a load of 2R and the main amplifier delivers current to the load which is one-half the current at maximum power and the amplifier is saturated.

Abstract translation: 一种用于在提高效率的宽范围的功率放大RF信号的RF功率放大器包括用于在第一功率范围上放大RF信号并且功率饱和电平低于功率范围最大值的功率放大器。 多个辅助放大器与主放大器并联连接，每个辅助放大器被偏置以在主放大器接近饱和之后依次提供放大的输出信号。 输入信号通过信号分离器施加到主放大器和多个辅助放大器，并且用于从主放大器和多个辅助放大器接收放大的输出信号的输出包括电阻负载R / 2。 分离输入信号通过90°变压器施加到主放大器，辅助放大器的输出通过90°变压器施加到输出负载。 当工作在饱和度以下时，主放大器将功率输送到2R的负载，主放大器将电流传递给负载，该功率是最大功率电流的一半，放大器饱和。

公开(公告)号：US20030141933A1

公开(公告)日：2003-07-31

申请号：US10059866

申请日：2002-01-28

Applicant: UltraRF, Inc.

Inventor： Raymond Sydney Pengelly

IPC: H03F003/68

CPC classification number: H03F1/32 ,  H03F1/0277 ,  H03F1/0288 ,  H03F3/602 ,  H03F2201/3203

Abstract: An RF power amplifier for amplifying an RF signal over a broad range of power with improved efficiency includes a main amplifier for amplifying an RF signal over a first range of power and with a power saturation level below the maximum of the broad range of power. A plurality of auxiliary amplifiers are connected in parallel with the main amplifier with each of the auxiliary amplifiers being biased to sequentially provide an amplified output signal after the main amplifier approaches saturation. The input signal is applied through a signal splitter to the main amplifier and the plurality of auxiliary amplifiers, and an output for receiving amplified output signals from the main amplifier and the plurality of auxiliary amplifiers includes a resistive load R/2. The split input signal is applied through a 90null transformer to the main amplifier, and the outputs of the auxiliary amplifiers are applied through 90null transformers to a output load. When operating below saturation, the main amplifier delivers power to a load of 2R and the main amplifier delivers current to the load which is one-half the current at maximum power and the amplifier is saturated.

Abstract translation: 一种用于在提高效率的宽范围的功率放大RF信号的RF功率放大器包括用于在第一功率范围上放大RF信号并且功率饱和电平低于功率范围最大值的功率放大器。 多个辅助放大器与主放大器并联连接，每个辅助放大器被偏置以在主放大器接近饱和之后依次提供放大的输出信号。 输入信号通过信号分离器施加到主放大器和多个辅助放大器，并且用于从主放大器和多个辅助放大器接收放大的输出信号的输出包括电阻负载R / 2。 分离输入信号通过90°变压器施加到主放大器，辅助放大器的输出通过90°变压器施加到输出负载。 当工作在饱和度以下时，主放大器将功率输送到2R的负载，主放大器将电流传递给负载，该功率是最大功率电流的一半，放大器饱和。

公开(公告)号：US20180278216A1

公开(公告)日：2018-09-27

申请号：US15877879

申请日：2018-01-23

Applicant: Intel Corporation

Inventor： Jong Seok Park ,  Yanjie J. Wang ,  Stefano Pellerano ,  Christopher D. Hull

IPC: H03F1/32 ,  H03F3/189 ,  H03F3/45 ,  H03F3/72 ,  H04L27/34 ,  H04B1/04 ,  H03F3/68 ,  H03F3/24 ,  H03F3/21 ,  H03F3/193 ,  H03F1/56 ,  H03F1/02 ,  H03F1/22

CPC classification number: H03F1/3205 ,  H03F1/0261 ,  H03F1/0277 ,  H03F1/223 ,  H03F1/565 ,  H03F3/189 ,  H03F3/193 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F3/45188 ,  H03F3/68 ,  H03F3/72 ,  H03F2200/111 ,  H03F2200/162 ,  H03F2200/18 ,  H03F2200/387 ,  H03F2200/423 ,  H03F2200/429 ,  H03F2200/451 ,  H03F2200/541 ,  H03F2201/3203 ,  H03F2203/21139 ,  H03F2203/21142 ,  H03F2203/21178 ,  H03F2203/7206 ,  H03F2203/7209 ,  H03F2203/7236 ,  H04B1/04 ,  H04B2001/0408 ,  H04L27/34

Abstract: A communication device includes a power amplifier that generates power signals according to one or more operating bands of communication data, with the amplitude being driven and generated in output stages of the power amplifier. The final stage can include an output passive network that suppresses suppress an amplitude modulation-to-phase modulation (AM-PM) distortion. During a back-off power mode a bias of a capacitive unit of the output power network component can be adjusted to minimize an overall capacitance variation. A output passive network can further generate a flat-phase response between dual resonances of operation.

公开(公告)号：US09497058B2

公开(公告)日：2016-11-15

申请号：US14085599

申请日：2013-11-20

Applicant: Aviacomm Inc.

Inventor： Tao Li ,  Hans Wang ,  Binglei Zhang ,  Shih Hsiung Mo

IPC: H04K1/02 ,  H04L27/26 ,  H03F1/02 ,  H03F1/32 ,  H03F3/24

CPC classification number: H04L27/2614 ,  H03F1/0266 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/435 ,  H03F2201/3203 ,  H04L27/2627

Abstract: One embodiment of the present invention provides a system for controlling operations of an amplifier in a wireless transmitter. During operation, the system receives a baseband signal to be transmitted, and dynamically switches an operation mode of the amplifier between a high power back-off mode having a first power back-off factor and a normal mode having a second power back-off factor based on a level of the baseband signal.

Abstract translation: 本发明的一个实施例提供一种用于控制无线发射机中放大器的操作的系统。 在操作期间，系统接收要发送的基带信号，并且在具有第一功率回退系数的高功率退避模式和具有第二功率回退系数的正常模式之间动态地切换放大器的操作模式 基于基带信号的电平。

公开(公告)号：US20160268976A1

公开(公告)日：2016-09-15

申请号：US15027037

申请日：2014-10-01

Applicant: RWTH AACHEN

Inventor： Renato NEGRA ,  Xuan Anh NGHIEM

IPC: H03F1/32 ,  H03F3/193 ,  H03F3/21 ,  H03F1/02

CPC classification number: H03F1/3205 ,  H03F1/0211 ,  H03F1/0288 ,  H03F3/193 ,  H03F3/211 ,  H03F3/245 ,  H03F2200/15 ,  H03F2200/451 ,  H03F2201/3203 ,  H03F2201/3233 ,  H03F2203/21103

Abstract: The invention relates to a sequential broadband Doherty power amplifier with adjustable output power back-off The sequential broadband Doherty power amplifier has at least one input (I1, I2; RFin) for receiving at least one broadband HF signal, wherein the broadband HF signal or broadband HF signals (RFin) have at least an average power level (carrier/average) and a peak envelope power level (peak), with the average power level and the peak envelope power level defining a crest factor, and a first amplifier branch for amplifying the input signal, with the first amplifier branch providing the amplification substantially for the low and at least the average power level, at least one second amplifier branch for amplifying the input signal, wherein the second amplifier branch substantially provides the amplification for the peak envelope power level, wherein the output of the first amplifier branch is connected via an impedance inverter (ZT) to the output of the second amplifier branch, the junction (CN) being connected to the load (Z0) in a substantially directly impedance-matched manner, wherein the first and the second amplifier branch each have a supply voltage, with at least one of the supply voltages being variable as a function of the crest factor of the signal to be amplified, and wherein the signal propagation delay through the at least two amplifier branches is substantially identical in the operating range.

Abstract translation: 本发明涉及具有可调输出功率回退的顺序宽带Doherty功率放大器。顺序宽带Doherty功率放大器具有用于接收至少一个宽带HF信号的至少一个输入（I1，I2; RFin），其中宽带HF信号或 宽带HF信号（RFin）至少具有平均功率电平（载波/平均）和峰值包络功率电平（峰值），平均功率电平和峰值包络功率电平定义波峰因数，以及第一放大器支路，用于 放大输入信号，其中第一放大器分支基本上为低平均功率电平提供放大;至少一个第二放大器支路，用于放大输入信号，其中第二放大器支路基本上提供峰值包络的放大 功率电平，其中第一放大器分支的输出经由阻抗反相器（ZT）连接到第二放大器分支的输出，th e连接（CN）以基本上直接阻抗匹配的方式连接到负载（Z0），其中第一和第二放大器支路各自具有电源电压，其中至少一个电源电压可以作为 要放大的信号的波峰因数，并且其中通过至少两个放大器分支的信号传播延迟在操作范围内基本相同。

公开(公告)号：US20160164466A1

公开(公告)日：2016-06-09

申请号：US14920031

申请日：2015-10-22

Applicant: Eta Devices, Inc.

Inventor： Mark A. Briffa ,  Joel L. Dawson ,  David J. Perreault ,  Oguzhan Uyar

IPC: H03F1/02 ,  H03F3/21 ,  H03F3/19

CPC classification number: H03F1/0222 ,  H03F1/02 ,  H03F1/0227 ,  H03F1/3282 ,  H03F3/19 ,  H03F3/211 ,  H03F3/24 ,  H03F3/245 ,  H03F2200/451 ,  H03F2200/504 ,  H03F2200/511 ,  H03F2201/3203 ,  H03F2203/21106 ,  H03F2203/21142 ,  H03G3/3042 ,  H04B1/0483 ,  H04B2001/045

Abstract: A radio frequency (RF) amplification system or transmitter includes one or more power amplifiers and a controller that is configured to adjust amplitudes and phases of RF input signals of the one or more power amplifiers and supply voltages applied to the one or more power amplifiers. The system may include a single digital-to-RF modulator and a power divider to drive multiple power amplifiers. A power combiner may also be provided to combine outputs of the power amplifiers. In at least one implementation, amplitude adjustment of the RF input signals of the one or more power amplifiers may be used to provide transmit power control and/or power backoff.

Abstract translation: 射频（RF）放大系统或发射器包括一个或多个功率放大器和被配置为调整一个或多个功率放大器的RF输入信号的幅度和相位以及施加到一个或多个功率放大器的电源电压的控制器。 该系统可以包括单个数字到RF调制器和用于驱动多个功率放大器的功率分配器。 还可以提供功率组合器来组合功率放大器的输出。 在至少一个实现中，可以使用一个或多个功率放大器的RF输入信号的幅度调整来提供发射功率控制和/或功率回馈。

公开(公告)号：US08208874B2

公开(公告)日：2012-06-26

申请号：US11794206

申请日：2007-05-04

Applicant: Christopher David Seymour

Inventor： Christopher David Seymour

IPC: H01Q11/12

CPC classification number: H03F1/0244 ,  H03F1/0211 ,  H03F1/0222 ,  H03F1/0266 ,  H03F1/32 ,  H03F3/24 ,  H03F2200/105 ,  H03F2200/468 ,  H03F2201/3203

Abstract: A Solid State Power Amplifier (SSPA) for powering a single element of a multi-element antenna, the SSPA comprising: an RF amplifier, having a signal amplifying path that includes preamplifier, driver amplifier and a power output stage; an Electronic Power Conditioner (EPC) for providing a variable value of DC voltage for powering the power output stage of the RF amplifier; a control ASIC for receiving an input power signal of the RF amplifier for providing a voltage control signal to the EPC to determine the value of the DC voltage, the control ASIC addressing an EEPROM holding a collection of control words that define output values of a control output signal for varying values of said input power, such that the value of the DC voltage to the power output stage is varied so as to control the gain compression of the RF amplifier for varying values of input power in order to maintain constant amplifier linearity.

Abstract translation: 一种固态功率放大器（SSPA），用于为多单元天线的单个元件供电，SSPA包括：具有包括前置放大器，驱动放大器和功率输出级的信号放大路径的RF放大器; 电子功率调节器（EPC），用于提供用于为RF放大器的功率输出级供电的DC电压的可变值; 用于接收RF放大器的输入功率信号的控制ASIC，用于向EPC提供电压控制信号以确定DC电压的值，控制ASIC寻址保存定义控制器的输出值的控制字集合的EEPROM 输出信号，用于改变所述输入功率的值，使得到功率输出级的DC电压的值被改变，以便控制用于改变输入功率值的RF放大器的增益压缩，以便保持恒定的放大器线性度。

公开(公告)号：US20110261903A1

公开(公告)日：2011-10-27

申请号：US13062958

申请日：2008-09-03

Applicant: Michael O'Brien ,  Patrick Pratt ,  Bing Xu

Inventor： Michael O'Brien ,  Patrick Pratt ,  Bing Xu

IPC: H04B1/62 ,  H04L25/49

CPC classification number: H03F1/3247 ,  H03F3/24 ,  H03F2200/451 ,  H03F2201/3203 ,  H03F2201/3233 ,  H04L27/368

Abstract: A wireless communication unit comprises a transmitter having a forward path comprising a power amplifier, PA, and a feedback path operably coupled to the power amplifier, wherein the feedback path comprises a coupler arranged to feed back a portion of a signal to be transmitted and a controller logic module arranged to control a power control value of the power amplifier, such that the forward path and feedback path form a closed loop power control. The controller logic module is arranged to determine a gain variation in the transmitter and provide attenuation to a transmit signal passing therethrough on a transmit slot by transmit slot basis and instruct a power backoff where necessary.

Abstract translation: 无线通信单元包括具有正向路径的发射机，该前向路径包括功率放大器PA和可操作地耦合到功率放大器的反馈路径，其中反馈路径包括耦合器，其被布置为反馈待传输的信号的一部分， 控制器逻辑模块被布置成控制功率放大器的功率控制值，使得前向路径和反馈路径形成闭环功率控制。 控制器逻辑模块被布置为确定发射机中的增益变化，并且通过发送时隙为发送时隙上的通过其的发送信号提供衰减，并且在必要时指示功率回退。