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公开(公告)号：EP2272171A1
公开(公告)日：2011-01-12
申请号：EP09730467.9
申请日：2009-04-02
Applicant: NXP B.V.
Inventor： PHILIPPE, Pascal
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03F1/3247 , H03F3/24 , H03F2201/3231
Abstract: A wireless transmitter (100) comprises a signal generator (10) for generating a signal, an amplifier (50) for amplifying the signal, and a phase shifting circuit (20) coupled between the signal generator (10) and the amplifier (50) and arranged to shift the phase of the signal to cancel remodulation of the signal generator (10) by the amplified signal.
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公开(公告)号：EP1499027B1
公开(公告)日：2010-12-01
申请号：EP02730823.8
申请日：2002-05-31
Applicant: FUJITSU LIMITED
Inventor： ISHIKAWA, Hiroyoshi, Fujitsu Limited , KUBO, Tokuro, Fujitsu Limited , NAGATANI, Kazuo, Fujitsu Limited , OISHI, Yasuyuki, Fujitsu Limited , HAMADA, Hajime, Fujitsu Limited , FUDABA, Nobukazu, Fujitsu Limited , MANIWA, Toru, Fujitsu Limited , HAYASHI, Hiroyuki, Fujitsu Limited
CPC classification number: H03F1/3247 , H03F2201/3231 , H03F2201/3233
Abstract: A distortion compensation apparatus in which a distortion compensation coefficient is calculated so as to reduce a difference signal between a reference signal which is a transmission signal and a feedback signal, an old distortion compensation coefficient is updated by the distortion compensation coefficient calculated, and the transmission signal is subjected to a distortion compensation in accordance with the distortion compensation coefficient. The apparatus alternately generates a phase compensation period for correcting a phase difference between the reference signal and the feedback signal and a distortion compensation coefficient updating period. Correction is made so that the phase difference is zero in the phase correction period and the distortion compensation coefficient is updated in the distortion compensation coefficient updating period.
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公开(公告)号：EP0908004A1
公开(公告)日：1999-04-14
申请号：EP97930924.0
申请日：1997-06-10
Applicant: TELEFONAKTIEBOLAGET L M ERICSSON (publ)
Inventor： HELLMARK, Martin , CARLSSON, Torsten
CPC classification number: H03F1/3247 , H03F1/3282 , H03F3/24 , H03F2200/102 , H03F2201/3231
Abstract: The present invention relates to a method of compensating for the phase distortion that occurs in a power amplified output signal in response to the output power of a power amplifier. The invention also relates to a phase distortion compensating device. The device includes a phase-locking and upconversion loop (30-39) which is connected to the input of a power amplifier (40). Briefly, the solution involves feeding a part of the signal (epha) to be amplified back to a circuit (35) which combines this first mentioned signal with a part of the amplified signal (eout) fed back from the output of the power amplifier (40), so as to achieve a smooth transition in the dominance of one signal over the other signal when the two signals are combined to obtain a new feedback signal (efdb) from the combining circuit (35).
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公开(公告)号：EP0632575A1
公开(公告)日：1995-01-04
申请号：EP94302684.9
申请日：1994-04-15
Applicant: JAPAN RADIO CO., LTD
Inventor： Tanaka, Yasuhide , Kimura, Masaho
CPC classification number: H03C3/40 , H03C2200/0058 , H03F1/3247 , H03F1/3282 , H03F1/3294 , H03F2201/3231
Abstract: A quadrature modulator multiplies two carriers which are 90° out of phase with each other by a sine component (I) and a cosine component (Q) of a baseband signal, respectively, adds (26) the product signals to each other, and amplifies (28) the sum signal to produce a quadrature-modulated output signal. The quadrature modulator includes a phase comparator (34) for detecting a phase distortion suffered when the sum signal is amplified, a first phase controller (1) for correcting the phase of a single carrier generated by a carrier oscillator based on a compared phase output signal from the phase comparator, a phase difference detector (20) for detecting the difference between 90° and the phase difference between the two carriers, and a second phase controller (2) for outputting the two carriers to be multiplied by the sine and cosine components of the baseband signal and controlling the phase difference between the two carriers generated from the single carrier whose phase distortion has been corrected by the first phase controller, into 90° based on a detected output signal from the phase difference detector.
Abstract translation: 正交调制器将基带信号的正弦分量（I）和余弦分量（Q）分别相差90°的两个载波相乘，将乘积信号彼此相加，并放大 （28）和信号以产生正交调制输出信号。 正交调制器包括：相位比较器（34），用于检测放大和信号时遭受的相位失真;第一相位控制器（1），用于根据比较的相位输出信号校正由载波振荡器产生的单个载波的相位 相位比较器，用于检测90°与两个载波之间的相位差的相位差检测器（20），以及用于输出要与正弦和余弦分量相乘的两个载波的第二相位控制器（2） 基于从相位差检测器检测到的输出信号，将由相位失真已由第一相位控制器校正的单个载波产生的两个载波之间的相位差控制为90°。
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75.发明申请RF POWER AMPLIFIER CONTROLLED BY ESTIMATED DISTORTION LEVEL OF OUTPUT SIGNAL OF POWER AMPLIFIER 审中-公开功率放大器的输出信号的估计失真水平控制的射频功率放大器
公开(公告)号：WO2009061583A1
公开(公告)日：2009-05-14
申请号：PCT/US2008/079622
申请日：2008-10-10
Applicant: QUANTANCE, INC. , VINAYAK, Vikas , DROGI, Serge Francois , TOMASZ, Martin
Inventor： VINAYAK, Vikas , DROGI, Serge Francois , TOMASZ, Martin
IPC: H04B1/04
CPC classification number: H04B1/0475 , H03F1/0227 , H03F1/0238 , H03F1/0244 , H03F1/3247 , H03F2200/102 , H03F2200/336 , H03F2201/3231
Abstract: A radio frequency (RF) power amplifier system is provided, in which a distortion of the RF output signal from the power amplifier is estimated by comparing the RF output signal with reference modulation information. The supply voltage to the power amplifier is adjusted so that the estimated distortion of the RF output signal corresponds to a predetermined distortion level. The predetermined distortion level is set to represent an acceptable distortion level at the RF output signal.
Abstract translation: 提供射频（RF）功率放大器系统，其中通过将RF输出信号与参考调制信息进行比较来估计来自功率放大器的RF输出信号的失真。 对功率放大器的电源电压进行调整，使得RF输出信号的估计失真对应于预定的失真水平。 预定的失真电平被设置为表示RF输出信号处的可接受的失真电平。
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Patent Agency Ranking
公开(公告)号：WO2003103163A1
公开(公告)日：2003-12-11
申请号：PCT/JP2002/005323
申请日：2002-05-31
IPC: H04B1/04
CPC classification number: H03F1/3247 , H03F2201/3231 , H03F2201/3233
Abstract: A distortion compensation apparatus in which a distortion compensation coefficient is calculated so as to reduce a difference signal between a reference signal which is a transmission signal and a feedback signal, an old distortion compensation coefficient is updated by the distortion compensation coefficient calculated, and the transmission signal is subjected to a distortion compensation in accordance with the distortion compensation coefficient. The apparatus alternately generates a phase compensation period for correcting a phase difference between the reference signal and the feedback signal and a distortion compensation coefficient updating period. Correction is made so that the phase difference is zero in the phase correction period and the distortion compensation coefficient is updated in the distortion compensation coefficient updating period.
Abstract translation: 一种失真补偿装置，其中计算失真补偿系数以便减少作为发送信号的参考信号与反馈信号之间的差分信号，旧失真补偿系数通过所计算的失真补偿系数和传输 信号根据失真补偿系数进行失真补偿。 该装置交替地产生用于校正参考信号和反馈信号之间的相位差的相位补偿周期和失真补偿系数更新周期。 进行校正，使得相位校正周期中的相位差为零，并且在失真补偿系数更新周期中更新失真补偿系数。
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公开(公告)号：WO99033169A2
公开(公告)日：1999-07-01
申请号：PCT/SE1998/002416
申请日：1998-12-22
CPC classification number: H03F1/3247 , H03F2201/3231
Abstract: The invention relates to a method for the regulation of transmitted phase of a signal in a device (100) which is part of a system for electromagnetic signal transmission, in which system the transmitted signal has periods when it contains information and periods when it does not contain information. The method comprises the control of the modulation position of a phase shifter (110) which has a linear and a non-linear range, power amplification (120) of the signal, detection of unwanted phase shifts in the signal transmitted by the device (100) caused within the power amplifier (120), and the detection of the information content of the signal, and is characterized in that the phase shifter (110) is reset to a particular predetermined modulation position phi ini in the event of detection of the absence of information in the signal. The predetermined modulation position phi ini to which the phase shifter (110) is reset is preferably situated within the linear range of the phase shifter.
Abstract translation: 本发明涉及一种用于调节作为用于电磁信号传输的系统的一部分的设备（100）中的信号的发射相位的方法，其中所发送的信号在其包含信息的周期和不包括其的时段 包含信息。 该方法包括控制具有线性和非线性范围的移相器（110）的调制位置，该信号的功率放大（120），检测由器件发送的信号中的不希望的相移（100） ）和检测信号的信息内容，并且其特征在于，在检测到不存在的情况下，移相器（110）被复位到特定的预定调制位置 的信号。 移相器（110）复位的预定调制位置位置优选位于移相器的线性范围内。
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公开(公告)号：WO1998000909A1
公开(公告)日：1998-01-08
申请号：PCT/SE1997001011
申请日：1997-06-10
Applicant: TELEFONAKTIEBOLAGET LM ERICSSON (publ)
IPC: H03F01/32
CPC classification number: H03F1/3247 , H03F1/3282 , H03F3/24 , H03F2200/102 , H03F2201/3231
Abstract: The present invention relates to a method of compensating for the phase distortion that occurs in a power amplified output signal in response to the output power of a power amplifier. The invention also relates to a phase distortion compensating device. The device includes a phase-locking and upconversion loop (30-39) which is connected to the input of a power amplifier (40). Briefly, the solution involves feeding a part of the signal (epha) to be amplified back to a circuit (35) which combines this first mentioned signal with a part of the amplified signal (eout) fed back from the output of the power amplifier (40), so as to achieve a smooth transition in the dominance of one signal over the other signal when the two signals are combined to obtain a new feedback signal (efdb) from the combining circuit (35).
Abstract translation: 本发明涉及一种补偿功率放大输出信号中响应于功率放大器输出功率的相位失真的方法。 本发明还涉及一种相位失真补偿装置。 该装置包括连接到功率放大器（40）的输入端的锁相和上变频回路（30-39）。 简而言之，解决方案包括将待放大的信号（epha）的一部分馈送到电路（35），该电路将该第一提及的信号与从功率放大器的输出反馈的一部分放大信号（eout）（ 40），以便当组合两个信号以从组合电路（35）获得新的反馈信号（efdb）时，实现一个信号在另一信号上的优势中的平滑过渡。
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公开(公告)号：US09871491B2
公开(公告)日：2018-01-16
申请号：US15332682
申请日：2016-10-24
Applicant: Ali Mohamed Darwish
Inventor： Ali Mohamed Darwish
CPC classification number: H03F1/3247 , H03F1/3282 , H03F1/3288 , H03F1/56 , H03F3/193 , H03F3/245 , H03F2200/192 , H03F2200/204 , H03F2200/222 , H03F2200/318 , H03F2200/387 , H03F2200/411 , H03F2201/3212 , H03F2201/3227 , H03F2201/3231 , H03F2201/3233 , H03G1/0029 , H03G1/0035 , H03G1/007 , H03G3/3036
Abstract: The present disclosure describes a method and system for linearizing an amplifier using transistor-level dynamic feedback. The method and system enables nonlinear amplifiers to exhibit linear performance using one or more of gain control elements and phase shifters in the feedback path. The disclosed method and system may also allow an amplifier to act as a pre-distorter or a frequency/gain programmable amplifier.
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公开(公告)号：US09813028B2
公开(公告)日：2017-11-07
申请号：US15251871
申请日：2016-08-30
Applicant: FUJITSU LIMITED
Inventor： Satoshi Matsubara , Hideharu Shako
CPC classification number: H03F1/32 , H03F1/3247 , H03F3/19 , H03F3/245 , H03F2201/3231 , H03F2201/3233 , H04W88/02
Abstract: an amplifier amplifies electrical power of signals. A calculating unit calculates a cumulative value for each of first samples and second samples, between which a difference in electrical power or phase is within a first range, in a first sample group and a second sample group corresponding to a first signal that is a signal before amplification in the amplifier and a second signal that is a signal after amplification in the amplifier. Then, the calculating unit calculates, by using the calculated cumulative value, a phase difference between the first signal and the second signal. The correction unit corrects the phase difference by using a correction amount calculated from the phase difference. The updating unit updates, by using the first signal and the second signal of which the phase difference is corrected, a distortion compensation coefficient that is used to compensate nonlinear distortion generated in the amplifier.
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