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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：US09866414B2
公开(公告)日：2018-01-09
申请号：US14337004
申请日：2014-07-21
IPC分类号： H04L27/36 , H04L27/00 , H03F1/32 , H03F1/30 , H03F3/08 , H03F3/19 , H03F3/24 , H04W24/02 , H04L25/06 , H04L25/08
CPC分类号： H03F1/304 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F3/087 , H03F3/19 , H03F3/24 , H03F2200/18 , H03F2200/204 , H03F2200/207 , H03F2200/447 , H03F2200/451 , H03F2201/3206 , H03F2201/3209 , H03F2201/3212 , H03F2201/3215 , H03F2201/3224 , H03F2201/3227 , H04L25/067 , H04L25/08 , H04L27/0008 , H04L27/368 , H04W24/02
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 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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3.发明申请MODULATION AGNOSTIC DIGITAL HYBRID MODE POWER AMPLIFIER SYSTEM AND METHOD 审中-公开调制惯性数字混合模式功率放大器系统及方法公开(公告)号：US20150010110A1
公开(公告)日：2015-01-08
申请号：US14337004
申请日：2014-07-21
CPC分类号： H03F1/304 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F3/087 , H03F3/19 , H03F3/24 , H03F2200/18 , H03F2200/204 , H03F2200/207 , H03F2200/447 , H03F2200/451 , H03F2201/3206 , H03F2201/3209 , H03F2201/3212 , H03F2201/3215 , H03F2201/3224 , H03F2201/3227 , H04L25/067 , H04L25/08 , H04L27/0008 , H04L27/368 , H04W24/02
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 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。 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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4.发明申请METHOD AND SYSTEM FOR ALIGNING SIGNALS WIDELY SPACED IN FREQUENCY FOR WIDEBAND DIGITAL PREDISTORTION IN WIRELESS COMMUNICATION SYSTEMS 有权用于无线通信系统中用于宽带数字预测的频率偏移信号的方法和系统公开(公告)号：US20140159810A1
公开(公告)日：2014-06-12
申请号：US13945736
申请日：2013-07-18
发明人： Wan Jong Kim
IPC分类号： H03F1/32
CPC分类号： H03F1/3247 , H03F1/3258 , H03F3/189 , H03F3/24 , H03F3/245 , H03F2200/336 , H03F2200/451 , H04L25/03063 , H04L25/03343 , H04L27/0002 , H04L27/2627 , H04L27/2655 , H04L43/028
摘要： A system for time aligning widely frequency spaced signals includes a digital predistortion (DPD) processor and a power amplifier coupled to the DPD processor and operable to provide a transmit signal at a power amplifier output. The system also includes a feedback loop coupled to the power amplifier output. The feedback loop comprises an adaptive fractional delay filter, a delay estimator coupled to the adaptive fractional delay filter, and a DPD coefficient estimator coupled to the delay estimator
摘要翻译： 用于时间对准宽频率信号的系统包括数字预失真（DPD）处理器和耦合到DPD处理器的功率放大器，并且可操作以在功率放大器输出端提供发射信号。 该系统还包括耦合到功率放大器输出的反馈回路。 反馈回路包括自适应分数延迟滤波器，耦合到自适应分数延迟滤波器的延迟估计器和耦合到延迟估计器的DPD系数估计器
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公开(公告)号：US09184703B2
公开(公告)日：2015-11-10
申请号：US14087682
申请日：2013-11-22
CPC分类号： H03F1/0288 , H03F1/0261 , H03F1/56 , H03F3/193 , H03F3/211 , H03F3/607 , H03F2200/451 , H03F2203/21106
摘要： A power amplifier using N-way Doherty structure with adaptive bias supply power tracking for extending the efficiency region over the high peak-to-average power:ratio of the multiplexing modulated signals such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. In an embodiment, present invention uses a dual-feed distributed structure to an N-way Doherty amplifier to improve the isolation between at least one main amplifier and at least one peaking amplifier and, and also to improve both gain and efficiency performance at high output back-off power. Hybrid couplers can be used at either or both of the input and output. In at least some implementations, circuit space is also conserved due to the integration of amplification, power splitting and combining.
摘要翻译： 公开了一种使用具有自适应偏置电源功率跟踪的N路Doherty结构的功率放大器，用于在高峰值与平均功率之间扩展效率区域：多路调制信号比例，如宽带码分多址和正交频分复用 。 在一个实施例中，本发明使用双馈馈分布式结构到N路Doherty放大器来改善至少一个主放大器与至少一个峰化放大器之间的隔离，并且还可以在高输出下提高增益和效率性能 后退电源 混合耦合器可以在输入和输出中的任一个或两者上使用。 在至少一些实现中，由于放大，功率分配和组合的集成，电路空间也是保守的。
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6.发明申请公开(公告)号：US20140191805A1
公开(公告)日：2014-07-10
申请号：US14087682
申请日：2013-11-22
CPC分类号： H03F1/0288 , H03F1/0261 , H03F1/56 , H03F3/193 , H03F3/211 , H03F3/607 , H03F2200/451 , H03F2203/21106
摘要： A power amplifier using N-way Doherty structure with adaptive bias supply power tracking for extending the efficiency region over the high peak-to-average power:ratio of the multiplexing modulated signals such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. In an embodiment, present invention uses a dual-feed distributed structure to an N-way Doherty amplifier to improve the isolation between at least one main amplifier and at least one peaking amplifier and, and also to improve both gain and efficiency performance at high output back-off power. Hybrid couplers can be used at either or both of the input and output. In at least some implementations, circuit space is also conserved due to the integration of amplification, power splitting and combining.
摘要翻译： 公开了一种使用具有自适应偏置电源功率跟踪的N路Doherty结构的功率放大器，用于在高峰值与平均功率之间扩展效率区域：多路调制信号比例，如宽带码分多址和正交频分复用 。 在一个实施例中，本发明使用双馈馈分布式结构到N路Doherty放大器来改善至少一个主放大器与至少一个峰化放大器之间的隔离，并且还可以在高输出下提高增益和效率性能 后退电源 混合耦合器可以在输入和输出中的任一个或两者上使用。 在至少一些实现中，由于放大，功率分配和组合的集成，电路空间也是保守的。
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公开(公告)号：US10728066B2
公开(公告)日：2020-07-28
申请号：US15827794
申请日：2017-11-30
IPC分类号： H04L27/00 , H03F1/32 , H04L27/36 , H03F1/30 , H03F3/08 , H03F3/19 , H03F3/24 , H04W24/02 , H04L25/06 , H04L25/08
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 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：US20180227152A1
公开(公告)日：2018-08-09
申请号：US15827794
申请日：2017-11-30
IPC分类号： H04L27/00 , H04L27/36 , H03F1/30 , H03F1/32 , H03F3/08 , H03F3/19 , H03F3/24 , H04W24/02 , H04L25/08 , H04L25/06
CPC分类号： H03F1/304 , H03F1/3241 , H03F1/3247 , H03F1/3258 , H03F3/087 , H03F3/19 , H03F3/24 , H03F2200/18 , H03F2200/204 , H03F2200/207 , H03F2200/447 , H03F2200/451 , H03F2201/3206 , H03F2201/3209 , H03F2201/3212 , H03F2201/3215 , H03F2201/3224 , H03F2201/3227 , H04L25/067 , H04L25/08 , H04L27/0008 , H04L27/368 , H04W24/02
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 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：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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10.发明申请METHOD AND SYSTEM FOR BASEBAND PREDISTORTION LINEARIZATION IN MULTI-CHANNEL WIDEBAND COMMUNICATION SYSTEMS 有权多通道宽带通信系统中基带预测线性化的方法与系统公开(公告)号：US20130315291A1
公开(公告)日：2013-11-28
申请号：US13887133
申请日：2013-05-03
IPC分类号： H04B1/04
CPC分类号： H04W40/02 , H03F1/3247 , H03F3/24 , H03F2200/336 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B7/022 , H04B2001/0425 , H04L25/03343 , H04L27/2618 , H04L27/362 , H04L2025/03414 , H04W24/02 , H04W24/04 , H04W40/00 , H04W72/04 , H04W72/0453
摘要： An efficient baseband predistortion linearization method for reducing the spectral regrowth and compensating memory effects in wideband communication systems using effective multiplexing modulation technique such as wideband code division multiple access and orthogonal frequency division multiplexing is disclosed. The present invention is based on the method of piecewise pre-equalized lookup table based predistortion, which is a cascade of a lookup table predistortion and piecewise pre-equalizers, to reduce the computational complexity and numerical instability for desired linearity performance with memory effects compensation for wideband transmitter systems. Therefore, the present invention could reduce the computational load, which saves hardware resources in an implementation and improve performance, in terms of adjacent channel power ratio.
摘要翻译： 公开了一种使用诸如宽带码分多址和正交频分复用之类的有效复用调制技术在宽带通信系统中减少频谱再生长和补偿存储器效应的有效的基带预失真线性化方法。 本发明基于基于分段预均衡查找表的预失真的方法，该预失真是查找表预失真和分段预均衡器的级联，以减少用于期望的线性性能的计算复杂度和数值不稳定性， 宽带发射机系统。 因此，本发明可以减少在相邻信道功率比方面在实现中节省硬件资源并提高性能的计算负荷。
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