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11.发明申请公开(公告)号：US20130147550A1
公开(公告)日：2013-06-13
申请号：US13724157
申请日：2012-12-21
Applicant: DALI SYSTEMS CO. LTD.
IPC: H03F1/32
CPC classification number: H03F1/3247 , H03F1/3241 , H03F3/24 , H03F2200/451 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B2001/0425 , H04L1/0044
Abstract: 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.
Abstract translation: 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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12.发明申请公开(公告)号：US20150333710A1
公开(公告)日：2015-11-19
申请号：US14691152
申请日：2015-04-20
Applicant: Dali Systems Co. Ltd.
CPC classification number: H04B1/0475 , H03F1/3247 , H03F3/19 , H03F3/21 , H03F3/24 , H03F2200/451 , H03F2200/57 , H03F2201/3215 , H03F2201/3233 , H04B2001/0425 , Y02D70/00
Abstract: 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.
Abstract translation: 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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13.发明授权公开(公告)号：US09077297B2
公开(公告)日：2015-07-07
申请号：US13724157
申请日：2012-12-21
Applicant: Dali Systems Co. Ltd.
CPC classification number: H03F1/3247 , H03F1/3241 , H03F3/24 , H03F2200/451 , H03F2200/57 , H03F2201/3224 , H03F2201/3233 , H04B1/0475 , H04B2001/0425 , H04L1/0044
Abstract: 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.
Abstract translation: 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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14.发明申请公开(公告)号：US20140179248A1
公开(公告)日：2014-06-26
申请号：US14095891
申请日：2013-12-03
Applicant: DALI SYSTEMS CO. LTD.
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03F1/3247 , H03F3/19 , H03F3/21 , H03F3/24 , H03F2200/451 , H03F2200/57 , H03F2201/3215 , H03F2201/3233 , H04B2001/0425 , Y02D70/00
Abstract: 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.
Abstract translation: 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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