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1.发明授权公开(公告)号：US09054652B2
公开(公告)日：2015-06-09
申请号：US14044385
申请日：2013-10-02
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Glenn Schedeen , Sandeep Mehta
CPC classification number: H03F1/3247 , H03F1/02 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/213 , H03F3/24 , H03F2200/336 , H03F2200/451 , H03F2201/3227 , H04B1/0475 , H04B1/40 , H04B2001/0416 , H04B2001/045
Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1−Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform, and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.
Abstract translation: 通过确定由整数T1表示的粗略时间延迟来增强RF功率放大器的互调性能; 确定RF功率放大器的发射信号波形的参考点; 将波形移位一组包括从（T1-Xd）到（T1 + Xd）的多个非整数分数步长的偏移量，其中T1是整数，Xd是用于定义分数步长的非整数分数步长值 整数T1使得非整数分数步骤在正方向和负方向上进行; 将发送的信号波形与反馈信号波形相关，以获得每个相应分数步骤的相应相关值; 通过选择具有最高各自的相关值的分数步骤来获得精确的分数延迟值; 将所获得的正确分数延迟值应用于所发送的信号波形以提供经补偿的发送信号波形，以及将经补偿的发送信号波形与反馈信号波形组合以减少RF功率放大器的至少一个互调乘积。
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2.发明申请公开(公告)号：US20150091643A1
公开(公告)日：2015-04-02
申请号：US14044385
申请日：2013-10-02
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Glenn Schedeen , Sandeep Mehta
CPC classification number: H03F1/3247 , H03F1/02 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/213 , H03F3/24 , H03F2200/336 , H03F2200/451 , H03F2201/3227 , H04B1/0475 , H04B1/40 , H04B2001/0416 , H04B2001/045
Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer T1; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets comprising a plurality of non-integer fractional steps from (T1−Xd) to (T1+Xd) where T1 is the integer and Xd is a non-integer fractional step size value for defining fractional steps about the integer T1 such that the non-integer fractional steps progress in a positive direction as well as a negative direction; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform, and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.
Abstract translation: 通过确定由整数T1表示的粗略时间延迟来增强RF功率放大器的互调性能; 确定RF功率放大器的发射信号波形的参考点; 将波形移位一组包括从（T1-Xd）到（T1 + Xd）的多个非整数分数步长的偏移量，其中T1是整数，Xd是用于定义分数步长的非整数分数步长值 整数T1使得非整数分数步骤在正方向和负方向上进行; 将发送的信号波形与反馈信号波形相关，以获得每个相应分数步骤的相应相关值; 通过选择具有最高各自的相关值的分数步骤来获得精确的分数延迟值; 将所获得的正确分数延迟值应用于所发送的信号波形以提供经补偿的发送信号波形，以及将经补偿的发送信号波形与反馈信号波形组合以减少RF功率放大器的至少一个互调乘积。
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公开(公告)号：US09755583B2
公开(公告)日：2017-09-05
申请号：US15026324
申请日：2014-10-01
Applicant: Nokia Solutions and Networks Oy
Inventor： Shavantha Kularatna , Christian Reichl , Bjoern Jelonnek , Alan Pereira , Glenn Schedeen , Sandeep Mehta
CPC classification number: H03F1/3247 , H03F1/02 , H03F3/19 , H03F3/195 , H03F3/21 , H03F3/213 , H03F3/24 , H03F2200/336 , H03F2200/451 , H03F2201/3227 , H04B1/0475 , H04B1/40 , H04B2001/0416 , H04B2001/045
Abstract: Enhancing the intermodulation performance of an RF power amplifier by determining a coarse time delay represented by an integer TI; determining a reference point for a transmitted signal waveform of the RF power amplifier; shifting the waveform by a set of offsets including a plurality of non-integer fractional steps; correlating the transmitted signal waveform with a feedback signal waveform to obtain a respective correlation value for each of corresponding fractional steps; obtaining an accurate fractional delay value by selecting a fractional step having a highest respective correlation value; applying the obtained correct fractional delay value to the transmitted signal waveform to provide a compensated transmitted signal waveform and combining the compensated transmitted signal waveform with the feedback signal waveform to reduce at least one intermodulation product of the RF power amplifier.
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