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公开(公告)号：US11418155B2
公开(公告)日：2022-08-16
申请号：US16592615
申请日：2019-10-03
摘要： A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
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公开(公告)号：US20140327481A1
公开(公告)日：2014-11-06
申请号：US14271881
申请日：2014-05-07
CPC分类号： H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/20 , H03F3/24 , H03F2200/129 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233
摘要： A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
摘要翻译： 公开了一种用于在宽带通信系统中实现高效率和高线性度的RF数字混合模式功率放大器系统。 本发明基于对RF域中的功率放大器进行线性化的自适应数字预失真的方法。 诸如放大器输出信号的线性度和不对称失真的功率放大器特性由窄带反馈路径监测并由数字模块中的自适应算法控制。 因此，本发明可以补偿功率放大器系统的非线性和存储器效应，并且在功率附加效率，相邻信道泄漏比和峰均功率比方面也提高了性能。 本公开使得功率放大器系统能够是现场可重新配置的并且支持多调制方案（调制不可知），多载波和多信道。 结果，数字混合模式功率放大器系统特别适用于诸如基站，中继器和室内信号覆盖系统之类的无线传输系统，其中基带I-Q信号信息不容易获得。
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3.发明申请SYSTEM AND METHOD FOR DIGITAL MEMORIZED PREDISTORTION FOR WIRELESS COMMUNICATION 有权用于无线通信的数字记录预测系统和方法公开(公告)号：US20140306762A1
公开(公告)日：2014-10-16
申请号：US14245190
申请日：2014-04-04
CPC分类号： H04L27/368 , H03F1/3247 , H03F3/189 , H03F3/19 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233 , H04B1/0475 , H04L1/0043 , H04L1/0044 , H04L27/367 , H04W52/52
摘要： A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a power amplifier having an output and coupled to the predistortion lookup table. The power amplifier system further includes a feedback loop providing a signal associated with the output of the power amplifier to the predistortion lookup table and a switch disposed in the feedback loop and operable to disconnect the predistortion lookup table from the output of the power amplifier.
摘要翻译： 功率放大器系统包括可操作以接收反映要传送的信息的原始值的输入和可操作以产生数字查找表密钥的地址数据表。 功率放大器系统还包括耦合到地址数据形成器的预失真查找表和具有输出并耦合到预失真查找表的功率放大器。 功率放大器系统还包括反馈回路，其将与功率放大器的输出相关联的信号提供给预失真查找表，以及设置在反馈回路中的开关，用于将预失真查找表与功率放大器的输出断开。
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公开(公告)号：US20180102747A1
公开(公告)日：2018-04-12
申请号：US15684580
申请日：2017-08-23
CPC分类号： H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/20 , H03F3/24 , H03F2200/129 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233
摘要： A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
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公开(公告)号：US09374196B2
公开(公告)日：2016-06-21
申请号：US14684678
申请日：2015-04-13
IPC分类号： H04B1/10 , H04L1/00 , H04L27/36 , H03F3/189 , H03F1/32 , H03F3/24 , H04W52/52 , H04B1/04 , H03F3/195
CPC分类号： H04L27/368 , H03F1/3247 , H03F3/189 , H03F3/19 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233 , H04B1/0475 , H04L1/0043 , H04L1/0044 , H04L27/367 , H04W52/52
摘要： A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a power amplifier having an output and coupled to the predistortion lookup table. The power amplifier system further includes a feedback loop providing a signal associated with the output of the power amplifier to the predistortion lookup table and a switch disposed in the feedback loop and operable to disconnect the predistortion lookup table from the output of the power amplifier.
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6.发明申请公开(公告)号：US20160036394A1
公开(公告)日：2016-02-04
申请号：US14788567
申请日：2015-06-30
CPC分类号： H03F1/3247 , H03F1/3241 , H03F3/24 , H03F2200/451 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B2001/0425 , H04L1/0044
摘要： An embodiment of the invention is a time-delay invariant predistortion approach to linearize power amplifiers in wireless RF transmitters. The predistortion architecture is based on the stored-compensation or memory-compensation principle by using a combined time-delay addressing method, and therefore, the architecture has an intrinsic, self-calibrating time-delay compensation function. The predistortion architecture only uses a lookup table to conduct both the correction of non-linear responses of a power amplifier and the compensation of any time-delay effects presented in the same system. Due to the time-delay invariant characteristic, the predistortion design has a wider dynamic range processing advantage for wireless RF signals, and therefore can be implemented in multi-carrier and multi-channel wireless systems.
摘要翻译： 本发明的实施例是用于线性化无线RF发射机中的功率放大器的时间延迟不变预失真方法。 预失真架构通过使用组合的时间延迟寻址方法基于存储补偿或存储器补偿原理，因此该架构具有内在的自校准时间延迟补偿功能。 预失真架构仅使用查找表来进行功率放大器的非线性响应的校正以及在同一系统中呈现的任何时间延迟效应的补偿。 由于时延不变特性，预失真设计对于无线RF信号具有更广泛的动态范围处理优势，因此可以在多载波和多信道无线系统中实现。
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7.发明授权System and method for digital memorized predistortion for wireless communication 有权用于无线通信的数字存储预失真的系统和方法公开(公告)号：US09031521B2
公开(公告)日：2015-05-12
申请号：US14245190
申请日：2014-04-04
CPC分类号： H04L27/368 , H03F1/3247 , H03F3/189 , H03F3/19 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233 , H04B1/0475 , H04L1/0043 , H04L1/0044 , H04L27/367 , H04W52/52
摘要： A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a power amplifier having an output and coupled to the predistortion lookup table. The power amplifier system further includes a feedback loop providing a signal associated with the output of the power amplifier to the predistortion lookup table and a switch disposed in the feedback loop and operable to disconnect the predistortion lookup table from the output of the power amplifier.
摘要翻译： 功率放大器系统包括可操作以接收反映要传送的信息的原始值的输入和可操作以产生数字查找表密钥的地址数据表。 功率放大器系统还包括耦合到地址数据形成器的预失真查找表和具有输出并耦合到预失真查找表的功率放大器。 功率放大器系统还包括反馈回路，其将与功率放大器的输出相关联的信号提供给预失真查找表，以及设置在反馈回路中的开关，用于将预失真查找表与功率放大器的输出断开。
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公开(公告)号：US09768739B2
公开(公告)日：2017-09-19
申请号：US14271881
申请日：2014-05-07
CPC分类号： H03F1/3247 , H03F1/3258 , H03F3/19 , H03F3/20 , H03F3/24 , H03F2200/129 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233
摘要： A RF-digital hybrid mode power amplifier system for achieving high efficiency and high linearity in wideband communication systems is disclosed. The present invention is based on the method of adaptive digital predistortion to linearize a power amplifier in the RF domain. The power amplifier characteristics such as variation of linearity and asymmetric distortion of the amplifier output signal are monitored by the narrowband feedback path and controlled by the adaptation algorithm in a digital module. Therefore, the present invention could compensate the nonlinearities as well as memory effects of the power amplifier systems and also improve performances, in terms of power added efficiency, adjacent channel leakage ratio and peak-to-average power ratio. The present disclosure enables a power amplifier system to be field reconfigurable and support multi-modulation schemes (modulation agnostic), multi-carriers and multi-channels. As a result, the digital hybrid mode power amplifier system is particularly suitable for wireless transmission systems, such as base-stations, repeaters, and indoor signal coverage systems, where baseband I-Q signal information is not readily available.
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9.发明申请SYSTEM AND METHOD FOR DIGITAL MEMORIZED PREDISTORTION FOR WIRELESS COMMUNICATION 审中-公开用于无线通信的数字记录预测系统和方法公开(公告)号：US20170033969A1
公开(公告)日：2017-02-02
申请号：US15173887
申请日：2016-06-06
CPC分类号： H04L27/368 , H03F1/3247 , H03F3/189 , H03F3/19 , H03F3/195 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2200/451 , H03F2201/3224 , H03F2201/3227 , H03F2201/3233 , H04B1/0475 , H04L1/0043 , H04L1/0044 , H04L27/367 , H04W52/52
摘要： A power amplifier system includes an input operable to receive an original value that reflects information to be communicated and an address data former operable to generate a digital lookup table key. The power amplifier system also includes a predistortion lookup table coupled to the address data former and a power amplifier having an output and coupled to the predistortion lookup table. The power amplifier system further includes a feedback loop providing a signal associated with the output of the power amplifier to the predistortion lookup table and a switch disposed in the feedback loop and operable to disconnect the predistortion lookup table from the output of the power amplifier.
摘要翻译： 功率放大器系统包括可操作以接收反映要传送的信息的原始值的输入和可操作以产生数字查找表密钥的地址数据表。 功率放大器系统还包括耦合到地址数据形成器的预失真查找表和具有输出并耦合到预失真查找表的功率放大器。 功率放大器系统还包括反馈回路，其将与功率放大器的输出相关联的信号提供给预失真查找表，以及设置在反馈回路中的开关，用于将预失真查找表与功率放大器的输出断开。
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10.发明授权公开(公告)号：US09054758B2
公开(公告)日：2015-06-09
申请号：US14095891
申请日：2013-12-03
CPC分类号： H04B1/0475 , H03F1/3247 , H03F3/19 , H03F3/21 , H03F3/24 , H03F2200/451 , H03F2200/57 , H03F2201/3215 , H03F2201/3233 , H04B2001/0425 , Y02D70/00
摘要： A predistortion system for linearizing the output of a power amplifier includes a first signal representative of an RF modulated signal and a feedback signal representative of nonlinear characteristics of a power amplifier. The system also includes a predistortion controller, comprising at least one lookup table, adapted to receive the first signal and the feedback signal and to generate a correction factor for correcting the nonlinear characteristics of the power amplifier and combining logic which combines the RF modulated signal with a signal corresponding to the correction factor and supplies it to the power amplifier to linearize the output of the power amplifier.
摘要翻译： 用于线性化功率放大器的输出的预失真系统包括表示RF调制信号的第一信号和表示功率放大器的非线性特性的反馈信号。 该系统还包括预失真控制器，包括至少一个查找表，适于接收第一信号和反馈信号，并产生用于校正功率放大器的非线性特性的校正因子，以及将RF调制信号与 对应于校正因子的信号并将其提供给功率放大器以使功率放大器的输出线性化。
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