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1. 发明授权

US06275105B1 Adaptive linearization of a feedforward amplifier by complex gain stabilization of the error amplifier 失效
标题翻译：通过误差放大器的复增益稳定自适应线性化前馈放大器
公开(公告)号：US06275105B1
公开(公告)日：2001-08-14
申请号：US09498863
申请日：2000-02-07
申请人： Fadhel M. Ghannouchi , François Beauregard , Ammar B. Kouki , Marco Bouchard
发明人： Fadhel M. Ghannouchi , François Beauregard , Ammar B. Kouki , Marco Bouchard
IPC分类号： H03F100
CPC分类号： H03F1/3235
摘要： In a feedforward amplifier for amplifying an input signal in order to produce an amplified output signal, an error signal representative of distortion in the amplified output signal is produced and an adaptive linearization circuit is provided. In this adaptive linearization circuit, serially interconnected attenuator, phase shifter and error amplifier process the error signal to produce a feature-adjusted error signal. A coupling member combines the feature-adjusted error signal in the amplified output signal in order to cancel distortion in this amplified output signal, and a comparator/controller circuit is responsive to the error signal and the feature-adjusted error signal to control the attenuator and the phase shifter.
摘要翻译：在用于放大输入信号以产生放大的输出信号的前馈放大器中，产生表示放大的输出信号中的失真的误差信号，并且提供自适应线性化电路。在这种自适应线性化电路中，串联互连的衰减器，移相器和误差放大器处理误差信号以产生特征调整的误差信号。耦合部件将放大的输出信号中的特征调整后的误差信号组合起来，以消除该放大的输出信号中的失真，并且比较器/控制器电路响应于误差信号和特征校正的误差信号来控制衰减器，移相器。

2. 发明授权

US06255908B1 Temperature compensated and digitally controlled amplitude and phase channel amplifier linearizer for multi-carrier amplification systems 失效
标题翻译：用于多载波放大系统的温度补偿和数字控制幅度和相位通道放大器线性化
公开(公告)号：US06255908B1
公开(公告)日：2001-07-03
申请号：US09389511
申请日：1999-09-03
申请人： Fadhel Ghannouchi , Said Touimer , François Beauregard , Ammar B. Kouki
发明人： Fadhel Ghannouchi , Said Touimer , François Beauregard , Ammar B. Kouki
IPC分类号： H03F1126
CPC分类号： H03F1/3252 , H03F1/3276 , H03F2200/198
摘要： A linearizer channel amplifier for use in conjunction with a power amplifier comprises an input series circuit formed of a first variable attenuator, an input drive amplifier and a power limiter, and an output series circuit formed of a second variable attenuator and an output drive amplifier. Between the input and output series circuits is interposed a linearizer. In this linearizer, a splitter produces first and second signal portions, a first path comprises serially interconnected predistorter and third variable attenuator for distorting and adjusting the amplitude of the first signal portion, a second path comprises serially interconnected phase shifter and fourth variable attenuator for phase-shifting and adjusting the amplitude of the second signal portion, and a combiner combines the distorted and amplitude-adjusted first signal portion and the phase-shifted and amplitude-adjusted second signal portion to form a predistorted output signal applied to the output series circuit. A digital controller includes a processor for measuring the level of a temperature of operation of the power amplifier through an interface, and a look-up table for storing predistortion control parameters related to different levels of the temperature of operation. The processor is connected to the look-up table for selecting predistortion control parameters in relation to the measured temperature level, and for applying through a D/A converter and a signal conditioner the selected predistortion control parameters to the first, second, third and fourth variable attenuators and to the phase shifter in view of producing a predistorted output signal which cancels a distortion subsequently produced by the power amplifier.
摘要翻译：与功率放大器结合使用的线性化通道放大器包括由第一可变衰减器，输入驱动放大器和功率限制器形成的输入串联电路，以及由第二可变衰减器和输出驱动放大器形成的输出串联电路。在输入和输出串联电路之间插入线性化电路。在该线性化器中，分离器产生第一和第二信号部分，第一路径包括串联互连的预失真器和第三可变衰减器，用于使第一信号部分的振幅失真和调整，第二路径包括串联互连的移相器和用于相位的第四可变衰减器移位并调整第二信号部分的幅度，并且组合器组合失真和调幅的第一信号部分和相移和调幅的第二信号部分，以形成施加到输出串联电路的预失真输出信号。数字控制器包括用于通过接口测量功率放大器的操作温度的处理器，以及用于存储与不同操作温度等级相关的预失真控制参数的查找表。处理器连接到查找表，用于相对于测量的温度水平选择预失真控制参数，并且通过D / A转换器和信号调节器将所选择的预失真控制参数应用于第一，第二，第三和第四考虑到产生消除由功率放大器随后产生的失真的预失真输出信号，可变衰减器和相移器。

3. 发明授权

US07330500B2 Adjustable electronic duplexer 有权
标题翻译：可调电子双工器
公开(公告)号：US07330500B2
公开(公告)日：2008-02-12
申请号：US10314414
申请日：2002-12-09
申请人： Ammar B. Kouki
发明人： Ammar B. Kouki
IPC分类号： H04B1/38
CPC分类号： H04B1/525
摘要： A duplexer for a communication device having a transmission unit, a reception unit and a shared antenna is disclosed. The duplexer comprises a first signal path between the transmission unit and the reception unit, the first signal path comprises a filter unit filtering the reception signal, the filtering unit provides a filtered signal to the reception unit. The duplexer further comprises a second signal path between the transmission unit and the reception unit. The second signal path comprises a cancellation unit which receives a sample of the transmission signal and produces a compensation signal. The injection of the compensation signal to the first signal path reduces the leakage signal, thereby producing a substantially leakage-free reception signal.
摘要翻译：公开了一种具有发送单元，接收单元和共享天线的通信设备的双工器。双工器包括在发送单元和接收单元之间的第一信号路径，第一信号路径包括对接收信号进行滤波的滤波器单元，滤波单元向接收单元提供经滤波的信号。双工器还包括传输单元和接收单元之间的第二信号路径。第二信号路径包括消除单元，其接收发送信号的采样并产生补偿信号。将补偿信号注入到第一信号路径减少了泄漏信号，从而产生了基本上无泄漏的接收信号。

4. 发明授权

US08364092B2 Balanced active and passive duplexers 有权
标题翻译：平衡有源和无源双工器
公开(公告)号：US08364092B2
公开(公告)日：2013-01-29
申请号：US11403189
申请日：2006-04-13
申请人： Ammar B. Kouki , Christian Talbot
发明人： Ammar B. Kouki , Christian Talbot
IPC分类号： H04B1/46
CPC分类号： H04B1/525
摘要： An active cancellation unit is disclosed for improving the noise cancellation between a transmitter and a receiver which are connected to an antenna using a duplexer, the unit comprising a coupler sampling a signal to transmit provided by the transmitter, a cancellation duplexer having characteristics similar to the duplexer and receiving the sampled signal to provide a simulated signal and an active component receiving the simulated signal and providing an amplified signal having a phase 180 degree shifted with respect to the simulated signal; and a coupler for injecting the simulated signal at the receiver.
摘要翻译：公开了一种主动取消单元，用于改善使用双工器连接到天线的发射机和接收机之间的噪声抵消，该单元包括对由发射机提供的要发射的信号进行采样的耦合器，具有类似于并且接收采样信号以提供模拟信号和有源分量接收模拟信号并提供相对于模拟信号相移180度相位的放大信号; 以及用于在接收器处注入模拟信号的耦合器。

5. 发明授权

US07459973B2 Method and apparatus for amplifying a signal modulated in amplitude 有权
标题翻译：用于放大以幅度调制的信号的方法和装置
公开(公告)号：US07459973B2
公开(公告)日：2008-12-02
申请号：US11450410
申请日：2006-06-12
申请人： Ammar B. Kouki , Gwënael Poitau
发明人： Ammar B. Kouki , Gwënael Poitau
IPC分类号： H03F3/68
CPC分类号： H03F1/0294
摘要： A method and apparatus for amplifying a signal modulated in amplitude using amplifiers having a given dynamic range corresponding to a limited conduction angle, comprising separating the signal in a first signal and in a second signal depending on the dynamic range of the amplifiers, wherein each of the first signal and the second signal has a corresponding phase assigned based on an amplitude of the signal, amplifying each of the first signal and the second signal using the amplifiers and combining the amplified signals.
摘要翻译：一种用于使用具有对应于受限导通角的给定动态范围的放大器放大幅度调制信号的方法和装置，包括根据放大器的动态范围将第一信号和第二信号中的信号分离，其中，第一信号和第二信号具有基于信号幅度分配的相应相位，使用放大器放大第一信号和第二信号中的每一个，并组合放大的信号。

6. 发明申请

US20070285161A1 Method and apparatus for amplifying a signal modulated in amplitude 有权
标题翻译：用于放大以幅度调制的信号的方法和装置
公开(公告)号：US20070285161A1
公开(公告)日：2007-12-13
申请号：US11450410
申请日：2006-06-12
申请人： Ammar B. Kouki , Gwenael Poitau
发明人： Ammar B. Kouki , Gwenael Poitau
IPC分类号： H03F1/26
CPC分类号： H03F1/0294
摘要： A method and apparatus for amplifying a signal modulated in amplitude using amplifiers having a given dynamic range corresponding to a limited conduction angle, comprising separating the signal in a first signal and in a second signal depending on the dynamic range of the amplifiers, wherein each of the first signal and the second signal has a corresponding phase assigned based on an amplitude of the signal, amplifying each of the first signal and the second signal using the amplifiers and combining the amplified signals.
摘要翻译：一种用于使用具有对应于受限导通角的给定动态范围的放大器放大幅度调制信号的方法和装置，包括根据放大器的动态范围将第一信号和第二信号中的信号分离，其中，第一信号和第二信号具有基于信号幅度分配的相应相位，使用放大器放大第一信号和第二信号中的每一个，并组合放大的信号。

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