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1. 发明申请

US20200021253A1 SYSTEM AND METHOD FOR RF AMPLIFIERS 审中-公开
公开(公告)号：US20200021253A1
公开(公告)日：2020-01-16
申请号：US16522080
申请日：2018-02-15
申请人： Fadhel Ghannouchi , Andrew Kwan , Mayada Younes , Mohamed Helaoui
发明人： Fadhel Ghannouchi , Andrew Kwan , Mayada Younes , Mohamed Helaoui
IPC分类号： H03F1/32 , H03F3/20
摘要： A digital predistorter comprising a first predistorter for generating out-of-band and inter-band distortion components for compensating for the static nonlinearity of a nonlinear element, and a second predistorter cascaded with the first predistorter, the second predistorter compensating for the in-band distortion of the nonlinear device wherein the cascade of the first predistorter and the second predistorter compensate for in-band, out-of-band and inter-band distortions when the cascade of the first, the second predistorter and the nonlinear element are driven with multiband signals.

2. 发明授权

US11296657B2 System and method for RF amplifiers 有权
公开(公告)号：US11296657B2
公开(公告)日：2022-04-05
申请号：US16522080
申请日：2018-02-15
申请人： Fadhel Ghannouchi , Andrew Kwan , Mayada Younes , Mohamed Helaoui
发明人： Fadhel Ghannouchi , Andrew Kwan , Mayada Younes , Mohamed Helaoui
IPC分类号： H03F1/32 , H03F3/30 , H03F3/20 , H03F3/189
摘要： A digital predistorter comprising a first predistorter for generating out-of-band and inter-band distortion components for compensating for the static nonlinearity of a nonlinear element, and a second predistorter cascaded with the first predistorter, the second predistorter compensating for the in-band distortion of the nonlinear device wherein the cascade of the first predistorter and the second predistorter compensate for in-band, out-of-band and inter-band distortions when the cascade of the first, the second predistorter and the nonlinear element are driven with multiband signals.

3. 发明授权

US08817859B2 Digital multi-band predistortion linearizer with nonlinear subsampling algorithm in the feedback loop 有权
标题翻译：在反馈环路中采用非线性二次采样算法的数字多频带预失真线性化方法
公开(公告)号：US08817859B2
公开(公告)日：2014-08-26
申请号：US13274290
申请日：2011-10-14
申请人： Fadhel Ghannouchi , Seyed Aidin Bassam , Mohamed Helaoui , Andrew Kwan
发明人： Fadhel Ghannouchi , Seyed Aidin Bassam , Mohamed Helaoui , Andrew Kwan
IPC分类号： H04B3/46
CPC分类号： H04B1/0475 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2200/111 , H03F2200/204 , H03F2200/207 , H03F2200/408 , H04B2001/0425 , H04L25/03343 , H04L2025/03356
摘要： A concurrent multi-band linearized transmitter (CMLT) has a concurrent digital multi-band predistortion block (CDMPB) and a concurrent multi-band transmitter (CMT) connected to the CDMPB. The CDMPB can have a plurality of digital baseband signal predistorter blocks (DBSPBs), an analyzing and modeling (A&M) stage, and a signal observation feedback loop. Each DBSPB can have a plurality of inputs, each corresponding to a single frequency band of the multi-band input signal, and its output corresponding to a single frequency band; each output connect corresponding to an input of the CMLT. The A&M stage can have a plurality of outputs connected to and updating the parameters of the DBSPBs, and a plurality of inputs connected to either both outputs of the signal observation loop or the output of the subsampling loop and to outputs of the DBSPBs. The A&M stage can perform signals' time alignment, reconstruction of signals and compute parameters of DBSPBs.
摘要翻译：并发多频带线性化发射机（CMLT）具有连接到CDMPB的并行数字多频带预失真块（CDMPB）和并发多频带发射机（CMT）。 CDMPB可以具有多个数字基带信号预失真器块（DBSPB），分析和建模（A＆M）级以及信号观察反馈回路。每个DBSPB可以具有多个输入，每个输入对应于多频带输入信号的单个频带，并且其输出对应于单个频带; 每个输出连接对应于CMLT的输入。 A＆M级可以具有连接到并更新DBSPB的参数的多个输出，以及连接到信号观察回路的两个输出或者二次采样回路的输出以及DBSPB的输出的多个输入。 A＆M舞台可以执行信号的时间对齐，重建信号和计算DBSPB的参数。

4. 发明申请

US20130094610A1 Digital Multi-band Predistortion Linearizer with Nonlinear Subsampling Algorithm in the Feedback Loop 有权
标题翻译：数字多频带预失真线性化器在反馈环路中具有非线性二次采样算法
公开(公告)号：US20130094610A1
公开(公告)日：2013-04-18
申请号：US13274290
申请日：2011-10-14
申请人： Fadhel Ghannouchi , Seyed Aiden Bassam , Mohamed Helaoui , Andrew Kwan
发明人： Fadhel Ghannouchi , Seyed Aiden Bassam , Mohamed Helaoui , Andrew Kwan
IPC分类号： H04L25/49
CPC分类号： H04B1/0475 , H03F1/3247 , H03F3/189 , H03F3/245 , H03F2200/111 , H03F2200/204 , H03F2200/207 , H03F2200/408 , H04B2001/0425 , H04L25/03343 , H04L2025/03356
摘要： A concurrent multi-band linearized transmitter (CMLT) has a concurrent digital multi-band predistortion block (CDMPB) and a concurrent multi-band transmitter (CMT) connected to the CDMPB. The CDMPB can have a plurality of digital baseband signal predistorter blocks (DBSPBs), an analyzing and modeling (A&M) stage, and a signal observation feedback loop. Each DBSPB can have a plurality of inputs, each corresponding to a single frequency band of the multi-band input signal, and its output corresponding to a single frequency band; each output connect corresponding to an input of the CMLT. The A&M stage can have a plurality of outputs connected to and updating the parameters of the DBSPBs, and a plurality of inputs connected to either both outputs of the signal observation loop or the output of the subsampling loop and to outputs of the DBSPBs. The A&M stage can perform signals' time alignment, reconstruction of signals and compute parameters of DBSPBs.
摘要翻译：并发多频带线性化发射机（CMLT）具有连接到CDMPB的并行数字多频带预失真块（CDMPB）和并发多频带发射机（CMT）。 CDMPB可以具有多个数字基带信号预失真器块（DBSPB），分析和建模（A＆M）级以及信号观察反馈回路。每个DBSPB可以具有多个输入，每个输入对应于多频带输入信号的单个频带，并且其输出对应于单个频带; 每个输出连接对应于CMLT的输入。 A＆M级可以具有连接到并更新DBSPB的参数的多个输出，以及连接到信号观察回路的两个输出或者二次采样回路的输出以及DBSPB的输出的多个输入。 A＆M舞台可以执行信号的时间对齐，重建信号和计算DBSPB的参数。

5. 发明授权

US09071303B2 Level de-multiplexed delta sigma modulator based transmitter 有权
标题翻译：基于水平解复用的Δ-Σ调制器的发射机
公开(公告)号：US09071303B2
公开(公告)日：2015-06-30
申请号：US13958088
申请日：2013-08-02
申请人： Fahmi Elsayed , Mohamed Helaoui , Fadhel Ghannouchi , Mojtaba Ebrahimi , Bradley John Morris
发明人： Fahmi Elsayed , Mohamed Helaoui , Fadhel Ghannouchi , Mojtaba Ebrahimi , Bradley John Morris
IPC分类号： H03M3/00 , H04B1/04 , H03M3/02 , H04B1/02
CPC分类号： H04B1/0475 , H03F1/02 , H03F3/24 , H03M3/02 , H03M3/50 , H03M7/302 , H03M7/3026 , H03M7/304 , H04B1/02 , H04B2001/045
摘要： This specification discloses a level de-multiplexed DSM based transmitter and a method for providing the same. Broadly embodiments of the present specification enable wireless transmitters that are based on multi-level de-multiplexed DSM. A three-level de-multiplexed DSM based transmitter is disclosed as an example. More generally, the use of m-level de-multiplexed DSM is also taught, the specification thereby being enabling for broader applications to a person skilled in the art. At least one of the efficiency and linearity of transmitters can be enhanced as required for specific applications by a person of skill in the art in view of this specification and the teachings of its disclosed embodiments.
摘要翻译：本说明书公开了一种基于水平解复用DSM的发射机及其提供方法。本说明书的广义实施例使得能够基于多级解复用DSM的无线发射机。作为示例公开了一种基于三电平解复用DSM的发射机。更通常地，还教导了使用m级解复用DSM，因此该说明书使得能够为本领域技术人员提供更广泛的应用。考虑到本说明书及其公开的实施例的教导，可以根据本领域技术人员的特定应用的要求来增强发射机的效率和线性度中的至少一个。

6. 发明公开

US20230268942A1 Apparatus and Method for Artificial Intelligence Driven Digital Predistortion in Transmission Systems having Multiple Impairments 审中-公开
公开(公告)号：US20230268942A1
公开(公告)日：2023-08-24
申请号：US18125642
申请日：2023-03-23
申请人： Fadhel Ghannouchi , Ahmadreza Motaqi , Mohamed Helaoui
发明人： Fadhel Ghannouchi , Ahmadreza Motaqi , Mohamed Helaoui
IPC分类号： H04B1/04
CPC分类号： H04B1/0475 , H04B2001/0425
摘要： An artificial intelligence(AI) driven linearizerfor a transmitter, comprising an input interface for inputting linearizer signals comprising information carrying signals, and operating conditions parameter signals, other than the information carrying signal, wherein the operating conditions parameter signals represent metrics affecting transfer characteristics of the transmitter, over a selected operating range of the transmitter, and a predistortion actuator circuit configured with an AI predistortion model for predistorting at least part of the information carrying signal to produce predistorted signals, the predistortion model being configured to be operable for adaptation to said characteristics of the transmitter using a single set of model coefficients that are unchanged over said entirety of said selected operating range.

7. 发明申请

US20120294387A1 EXTENDED BANDWIDTH DIGITAL DOHERTY TRANSMITTER 有权
标题翻译：扩展带宽数字多功能发射机
公开(公告)号：US20120294387A1
公开(公告)日：2012-11-22
申请号：US13563621
申请日：2012-07-31
申请人： Fadhel Ghannouchi , Ramzi Darraji
发明人： Fadhel Ghannouchi , Ramzi Darraji
IPC分类号： H04L27/00
CPC分类号： H03F1/0288 , H03F3/602 , H03F2200/408 , H04L27/367
摘要： An extended bandwidth digital Doherty transmitter includes a baseband signal processing block including a digital predistortion unit. It also includes a digital signal distribution unit and a digital phase alignment unit, a signal up-conversion block, an RF power amplification block including the carrier amplifier and one or two peaking amplifiers; and an RF Doherty combining network. In another aspect, a digital Doherty transmitter includes a baseband signal block including a digital predistortion unit, a digital signal distribution unit and an adaptive digital phase alignment unit. In this aspect a signal up-conversion block includes three digital-to-analog converters (DACs) and a tri-channel up-converter or three single-channel up-converters. There is also an RF power amplification block including the carrier amplifier and two peaking amplifiers, and an RF Doherty combining network which includes quarter wavelength impedance transformers.
摘要翻译：扩展带宽数字Doherty发射机包括包括数字预失真单元的基带信号处理块。它还包括数字信号分配单元和数字相位对准单元，信号上变换块，包括载波放大器和一个或两个峰值放大器的RF功率放大块; 和RF Doherty组合网络。另一方面，数字Doherty发射机包括包括数字预失真单元，数字信号分配单元和自适应数字相位对准单元的基带信号块。在这方面，信号上变换块包括三个数模转换器（DAC）和三通道上变频器或三个单通道上变频器。还有一个RF功率放大块，包括载波放大器和两个峰值放大器，以及包括四分之一波长阻抗变换器的RF Doherty组合网络。

8. 发明授权

US08078561B2 Nonlinear behavior models and methods for use thereof in wireless radio systems 有权
标题翻译：非线性行为模型及其在无线电系统中的使用方法
公开(公告)号：US08078561B2
公开(公告)日：2011-12-13
申请号：US11999264
申请日：2007-12-03
申请人： Taijun Liu , Slim Boumaiza , Fadhel Ghannouchi
发明人： Taijun Liu , Slim Boumaiza , Fadhel Ghannouchi
IPC分类号： G06F17/00 , G06N5/02
CPC分类号： H03F1/3258 , H03F1/3241 , H04B17/391 , H04B17/3912 , H04B2001/0425
摘要： Disclosed is a behavioral model for wide-band radio frequency transmitters. Also disclosed are various implementation of the behavioral model for purpose of baseband predistortion of dynamic nonlinear systems, such as wideband wireless transmitters and power amplifiers. In one example embodiment, a LBG behavioral model comprises two non-linear cascading modules: a dynamic weak nonlinear (DWNL) module, which models dynamic week nonlinearities of the system, and a static strong nonlinear (SSNL) module, which models static strong nonlinearities of the system. In one example embodiment, a forward LBG model includes DWNL module followed by the SSNL module. In another example embodiment, a reverse LBG model includes SSNL module followed by DWNL module.
摘要翻译：公开了宽带射频发射机的行为模型。还公开了用于诸如宽带无线发射机和功率放大器之类的动态非线性系统的基带预失真的行为模型的各种实现。在一个示例实施例中，LBG行为模型包括两个非线性级联模块：动态弱非线性（DWNL）模块，其对该系统的动态周非线性进行建模，以及静态强非线性（SSNL）模块，其模拟静态强非线性的系统。在一个示例实施例中，前向LBG模型包括随后是SSNL模块的DWNL模块。在另一个示例实施例中，反向LBG模型包括随后是DWNL模块的SSNL模块。

9. 发明申请

US20220077825A1 Digital Doherty Transmitter 有权
公开(公告)号：US20220077825A1
公开(公告)日：2022-03-10
申请号：US13105852
申请日：2011-05-11
申请人： Fadhel Ghannouchi , Ramzi Darraji
发明人： Fadhel Ghannouchi , Ramzi Darraji
IPC分类号： H03F1/02 , H03F3/24 , H03F1/32
摘要： A digital Doherty amplifier compromises a baseband signal processing block including a digital predistortion unit, a digital signal distribution unit and a digital phase alignment unit; a signal up-conversion block, an RF power amplification block, the RF power amplification block including the carrier amplifier and one or two peaking amplifiers; and a RF Doherty combining network. In another aspect, a digital Doherty amplifier compromises a baseband signal block including a digital predistortion unit, a digital signal distribution unit and an adaptive digital phase alignment unit; a signal up-conversion block; a signal up-conversion block, the signal up-conversion block including three digital-to-analog converters (DACs) and a tri-channel up-converter or three single-channel up-converters; a RF power amplification block, the RF power amplification block including the carrier amplifier and two peaking amplifiers; and an RF Doherty combining network which includes quarter wavelength impedance transformers.

10. 发明授权

US06809587B2 Active predistorting linearizer with agile bypass circuit for safe mode operation 失效
标题翻译：具有敏捷旁路电路的主动预失真线性化电路，用于安全模式运行
公开(公告)号：US06809587B2
公开(公告)日：2004-10-26
申请号：US10127722
申请日：2002-04-23
申请人： Fadhel Ghannouchi , Said Touimer , François Beauregard , Chan-Wang Park , Ahmed A. Boutouili
发明人： Fadhel Ghannouchi , Said Touimer , François Beauregard , Chan-Wang Park , Ahmed A. Boutouili
IPC分类号： H03F126
CPC分类号： H03F1/3282 , H03F2200/198
摘要： An active predistorting linearizer with agile bypass circuit for safe mode operation is used in conjunction with an amplifier. This linearizer comprises a controllable input variable-attenuator and drive-amplifier circuit supplied with the input signal to attenuate and amplify the input signal. A predistorter includes a controllable phase-shifting and amplitude-adjusting path supplied with the attenuated and amplified input signal to distort the latter signal and produce a predistorted output signal. A controllable output variable-attenuator and drive-amplifier circuit is supplied with the predistorted output signal to attenuate and amplify this predistorted output signal before supplying it to the power amplifier. A phase-shifting and amplitude-adjusting controller is connected to the controllable input variable-attenuator and drive-amplifier circuit, the controllable phase-shifting and amplitude-adjusting path, and the controllable output variable-attenuator and drive-amplifier circuit. Finally, a bypass extends in parallel with the series circuit including the serially interconnected input variable-attenuator and drive-amplifier circuit, controllable phase-shifting and amplitude-adjusting path, and output variable-attenuator and drive-amplifier circuit. This bypass defines a bypass circuit established in response to a fault condition in the series circuit to bypass the faulty series circuit.
摘要翻译：具有安全模式操作的敏捷旁路电路的有源预失真线性化调节器与放大器结合使用。该线性化器包括可控输入可变衰减器和驱动放大器电路，该电路提供有输入信号以衰减和放大输入信号。预失真器包括被提供有衰减和放大的输入信号的可控相移和幅度调节路径，以使后一信号失真并产生预失真的输出信号。可控输出可变衰减器和驱动放大器电路提供预失真输出信号，以在将其提供给功率放大器之前衰减和放大该预失真输出信号。一个移相和调幅控制器连接到可控输入可变衰减器和驱动放大器电路，可控相移和幅度调节路径以及可控输出可变衰减器和驱动放大器电路。最后，旁路与串联电路并联延伸，包括串联的输入可变衰减器和驱动放大器电路，可控相移和幅度调节路径，以及输出可变衰减器和驱动放大器电路。该旁路定义了一个绕串联电路故障条件建立的旁路电路，以绕过故障串联电路。

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