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1.发明授权Method, device, phone and base station for providing envelope-following for variable envelope radio frequency signals 失效方法，设备，电话和基站，为可变包络射频信号提供包络跟踪
公开(公告)号：US6141541A
公开(公告)日：2000-10-31
申请号：US1762
申请日：1997-12-31
申请人： Pallab Midya , Lawrence E. Connell , Steven F. Gillig , John Grosspietsch , Andrew Merritt Khan , George Francis Opas , Robert Louis Palandech
发明人： Pallab Midya , Lawrence E. Connell , Steven F. Gillig , John Grosspietsch , Andrew Merritt Khan , George Francis Opas , Robert Louis Palandech
CPC分类号： H04W52/52 , H03F1/0227 , H03F2200/102 , Y02B60/50
摘要： A method (200) and device (100) provide an efficient linear power amplifier that generates a variable-envelope radio frequency RF signal. The method includes the steps of: A) using an efficient envelope-following unit to output a supply voltage in accordance with a variable envelope of an input baseband signal, wherein using the efficient envelope-following unit includes: 1) using a bandwidth-limiting mapping unit to determine a reference signal based on the baseband signal; and 2) using an envelope-tracking power converter to output a supply voltage, responsive to the reference signal, to the linear RF power amplifier; B) providing an RF input signal with amplitude and phase information to a linear RF power amplifier; and C) using the linear RF power amplifier to output a power-efficient amplified variable-envelope RF signal with substantially a same amplitude and phase information as the RF input signal.
摘要翻译： 一种方法（200）和装置（100）提供一种生成可变包络射频RF信号的有效线性功率放大器。 该方法包括以下步骤：A）使用有效的包络跟随单元根据输入基带信号的可变包络输出电源电压，其中使用有效包络跟随单元包括：1）使用带宽限制 映射单元，以基于所述基带信号确定参考信号; 以及2）使用包络跟踪功率转换器将响应于所述参考信号的电源电压输出到所述线性RF功率放大器; B）向线性RF功率放大器提供具有幅度和相位信息的RF输入信号; 和C）使用线性RF功率放大器输出具有与RF输入信号基本相同的幅度和相位信息的功率有效的放大的可变包络RF信号。
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2.发明授权Method, device, phone, and base station for providing an efficient tracking power converter for variable signals 失效方法，设备，电话和基站，用于为可变信号提供有效的跟踪功率转换器
公开(公告)号：US6138042A
公开(公告)日：2000-10-24
申请号：US001625
申请日：1997-12-31
CPC分类号： H03F1/0227 , H03F2200/102
摘要： A method (300, 400), device (100, 200), phone (200) and base station (200) provide an efficient tracking power converter for variable signals. The tracking power converter includes a feedforward feedback control unit that is coupled to receive a reference signal and to receive at least one feedback signal and is used for determining an optimal control signal in accordance with a predetermined scheme, a pulse width modulation unit that is coupled to the feedforward feedback control unit and is used for modifying a duty ratio to provide a switching signal, and a power converter that is coupled to the pulse width modulation unit and to a power source and is used for providing the dynamic variable output signal.
摘要翻译： 方法（300,400），设备（100,200），电话（200）和基站（200）为可变信号提供有效的跟踪功率转换器。 跟踪功率转换器包括前馈反馈控制单元，其耦合以接收参考信号并且接收至少一个反馈信号，并且用于根据预定方案确定最佳控制信号;脉冲宽度调制单元，被耦合 并且用于修改占空比以提供开关信号;以及功率转换器，其耦合到脉宽调制单元和电源，并用于提供动态可变输出信号。
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公开(公告)号：US07312654B2
公开(公告)日：2007-12-25
申请号：US11314203
申请日：2005-12-20
申请人： William J. Roeckner , Pallab Midya , Patrick L. Rakers , Lawrence E. Connell , Daniel A. Mavencamp , Bradley C. Stewart
发明人： William J. Roeckner , Pallab Midya , Patrick L. Rakers , Lawrence E. Connell , Daniel A. Mavencamp , Bradley C. Stewart
IPC分类号： H03F3/38
CPC分类号： H03F3/2173 , H03F1/305 , H03F3/2171 , H03F3/72 , H03F2200/03 , H03F2200/351 , H03K17/161
摘要： A closed loop audio amplifier system and method of powering up/down the system without producing audible artifacts are provided. During power up, a prebias voltage is provided to each output connected to a speaker to increase the voltage to a nominal output level. High impedance switches are then driven at a 50% duty cycle. Feedback from the output is supplied to a servo, which is enabled to fine tune the output voltage. Low impedance switches are then driven at a 50% duty cycle at a quarter cycle timing. The order of the feedback loop depends on which of the high or low impedance switches are driven. The prebias voltage is then removed before audio signals to be amplified are supplied to the system. Timing of driving of the switches is programmable. To power down, essentially the reverse sequence is provided.
摘要翻译： 提供一种闭环音频放大器系统以及在不产生可听见的伪影的情况下对系统加电/下电的方法。 在上电期间，向连接到扬声器的每个输出端提供预偏置电压以将电压增加到额定输出电平。 然后以50％占空比驱动高阻抗开关。 输出端的反馈信号被提供给一个伺服控制器，可以对输出电压进行微调。 然后，在四分之一周期的时间，以50％的占空比驱动低阻抗开关。 反馈环路的顺序取决于驱动高阻抗或低阻抗开关中的哪一个。 然后在将要放大的音频信号提供给系统之前，去除预偏置电压。 开关的驱动时序是可编程的。 为了断电，基本上提供了相反的顺序。
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公开(公告)号：US06348781B1
公开(公告)日：2002-02-19
申请号：US09733722
申请日：2000-12-11
IPC分类号： G05F1613
CPC分类号： H03F1/0227 , H02M3/1582
摘要： A buck or boost (BOB) power converter circuit. A buck converter is cascaded with a boost converter to form a buck or boost circuit (20). The BOB converter is controlled by a controller (26) such that only the buck or boost converter is operating at any given time. A reference signal Vref can be applied to the controller (26) such that the output voltage from the converter closely tracks the reference signal. Positive and negative ramp signals are generated and an error feedback signal is compared with the ramp signals to control the output in accord with Vref. This is useful in application of the output voltage as the power supply to an RF Power Amplifier (16) so that the reference signal can represent the envelope of a signal to be transmitted and the RF PA (16) can operate at high efficiency.
摘要翻译： 降压或升压（BOB）电源转换器电路。 降压转换器与升压转换器级联以形成降压或升压电路（20）。 BOB转换器由控制器（26）控制，使得只有降压或升压转换器在任何给定时间运行。 参考信号Vref可以被施加到控制器（26），使得来自转换器的输出电压紧密地跟踪参考信号。 产生正和负斜坡信号，并将误差反馈信号与斜坡信号进行比较，以根据Vref控制输出。 这在将输出电压作为RF功率放大器（16）的电源应用时是有用的，使得参考信号可以表示要发送的信号的包络，并且RF PA（16）可以以高效率运行。
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5.发明申请DIGITAL SATURATION HANDLING IN INTEGRAL NOISE SHAPING OF PULSE WIDTH MODULATION 有权脉冲宽度调制的整体噪声形状数字饱和处理公开(公告)号：US20070109165A1
公开(公告)日：2007-05-17
申请号：US11273286
申请日：2005-11-14
IPC分类号： H03M1/66
摘要： An audio amplifier includes a digital signal processor (DSP) that contains a noise shaping quantizer having an integrating error amplifier. The integrating error amplifier contains integrators connected in a feedback loop, a summer supplied with an output of each of the integrators, and a saturation function module producing a saturation function. A multiplier is disposed between each pair of adjacent integrators. The multiplier receives a signal from one of the adjacent integrators and the saturation function and supplies a signal to the other of the adjacent integrators. The saturation function decreases the effect of all of the integrators except an integrator to which an input signal to the integrating amplifier is supplied using an input signal to and/or an output signal from the noise shaping quantizer. This permits the duty ratio of the output signal from the noise shaping quantizer to extend from 0% to 100%.
摘要翻译： 音频放大器包括包含具有积分误差放大器的噪声整形量化器的数字信号处理器（DSP）。 积分误差放大器包含连接在反馈回路中的积分器，与每个积分器的输出相加的夏季以及产生饱和功能的饱和功能模块。 在每对相邻的积分器之间设置乘法器。 乘法器接收来自相邻积分器之一的信号和饱和度函数，并向相邻的积分器中的另一个提供信号。 饱和功能降低了除了积分器之外的所有积分器的影响，使用来自噪声整形量化器的输入信号和/或来自噪声整形量化器的输出信号向积分放大器提供输入信号。 这允许来自噪声整形量化器的输出信号的占空比从0％延伸到100％。
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6.发明授权Power amplifier circuit and method using bandlimited signal component estimates 有权功率放大器电路及方法采用带限信号分量估计公开(公告)号：US06838931B2
公开(公告)日：2005-01-04
申请号：US10844123
申请日：2004-05-12
CPC分类号： H03F3/211 , H03F1/0222 , H03F1/0277 , H03G3/004
摘要： A power amplifier circuit for receiving a variable envelope input signal and for producing an amplified output signal is provided. The power amplifier circuit includes an envelope approximation circuit, an envelope amplifier circuit, a phasor approximation circuit, a quadrature modulation circuit, and a power amplifier. The envelope approximation circuit receives the variable envelope input signal and produces a bandlimited estimated envelope signal, corresponding to the amplitude of the variable envelope input signal. The bandlimited estimated envelope signal is then amplified by an envelope amplifier circuit. The amplified envelope signal is then coupled to the supply input of the power amplifier. The phasor approximation circuit receives the variable envelope input signal and produces a bandlimited estimated phasor signal. The quadrature modulation circuit receives the estimated phase signal and produces a modulated phase signal. The modulated phase signal is then coupled to the signal input of the power amplifier. The power amplifier then produces an amplified output signal.
摘要翻译： 提供一种用于接收可变包络输入信号并产生放大的输出信号的功率放大器电路。 功率放大器电路包括包络近似电路，包络放大器电路，相量近似电路，正交调制电路和功率放大器。 包络近似电路接收可变包络输入信号，并产生对应于可变包络输入信号的幅度的带限估计包络信号。 然后，带通估计包络信号由包络放大器电路放大。 放大的包络信号然后被耦合到功率放大器的电源输入端。 相量近似电路接收可变包络输入信号并产生带限估计的相量信号。 正交调制电路接收估计的相位信号并产生调制相位信号。 然后将调制相位信号耦合到功率放大器的信号输入端。 然后，功率放大器产生放大的输出信号。
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7.发明授权Power amplifier circuit and method using bandlimited signal component estimates 有权功率放大器电路及方法采用带限信号分量估计公开(公告)号：US06801082B2
公开(公告)日：2004-10-05
申请号：US10334843
申请日：2002-12-31
IPC分类号： H03F338
CPC分类号： H03F3/211 , H03F1/0222 , H03F1/0277 , H03G3/004
摘要： A power amplifier circuit for receiving a variable envelope input signal and for producing an amplified output signal is provided. The power amplifier circuit includes an envelope approximation circuit, an envelope amplifier circuit, a phasor approximation circuit, a quadrature modulation circuit, and a power amplifier. The envelope approximation circuit receives the variable envelope input signal and produces a bandlimited estimated envelope signal, corresponding to the amplitude of the variable envelope input signal. The bandlimited estimated envelope signal is then amplified by an envelope amplifier circuit. The amplified envelope signal is then coupled to the supply input of the power amplifer. The phasor approximation circuit receives the variable envelope input signal and produces a bandlimited estimated phasor signal. The quadrature modulation circuit receives the estimated phase signal and produces a modulated phase signal. The modulated phase signal is then coupled to the signal input of the power amplifier. The power amplifier then produces an amplified output signal.
摘要翻译： 提供一种用于接收可变包络输入信号并产生放大的输出信号的功率放大器电路。 功率放大器电路包括包络近似电路，包络放大器电路，相量近似电路，正交调制电路和功率放大器。 包络近似电路接收可变包络输入信号，并产生对应于可变包络输入信号的幅度的带限估计包络信号。 然后，带通估计包络信号由包络放大器电路放大。 放大的包络信号然后被耦合到功率放大器的电源输入端。 相量近似电路接收可变包络输入信号并产生带限估计的相量信号。 正交调制电路接收估计的相位信号并产生调制相位信号。 然后将调制相位信号耦合到功率放大器的信号输入端。 然后，功率放大器产生放大的输出信号。
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8.发明授权Digital saturation handling in integral noise shaping of pulse width modulation 有权数字饱和处理在脉冲宽度调制的积分噪声整形中公开(公告)号：US07227487B1
公开(公告)日：2007-06-05
申请号：US11273286
申请日：2005-11-14
IPC分类号： H03M1/82
摘要： An audio amplifier includes a digital signal processor (DSP) that contains a noise shaping quantizer having an integrating error amplifier. The integrating error amplifier contains integrators connected in a feedback loop, a summer supplied with an output of each of the integrators, and a saturation function module producing a saturation function. A multiplier is disposed between each pair of adjacent integrators. The multiplier receives a signal from one of the adjacent integrators and the saturation function and supplies a signal to the other of the adjacent integrators. The saturation function decreases the effect of all of the integrators except an integrator to which an input signal to the integrating amplifier is supplied using an input signal to and/or an output signal from the noise shaping quantizer. This permits the duty ratio of the output signal from the noise shaping quantizer to extend from 0% to 100%.
摘要翻译： 音频放大器包括包含具有积分误差放大器的噪声整形量化器的数字信号处理器（DSP）。 积分误差放大器包含连接在反馈回路中的积分器，与每个积分器的输出相加的夏季以及产生饱和功能的饱和功能模块。 在每对相邻的积分器之间设置乘法器。 乘法器接收来自相邻积分器之一的信号和饱和度函数，并向相邻的积分器中的另一个提供信号。 饱和功能降低了除了积分器之外的所有积分器的影响，使用来自噪声整形量化器的输入信号和/或来自噪声整形量化器的输出信号向积分放大器提供输入信号。 这允许来自噪声整形量化器的输出信号的占空比从0％延伸到100％。
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9.发明授权Scalar cost function based predistortion linearizing device, method, phone and basestation 失效基于标量成本函数的预失真线性化设备，方法，手机和基站公开(公告)号：US06240278B1
公开(公告)日：2001-05-29
申请号：US09126573
申请日：1998-07-30
申请人： Pallab Midya , John Grosspietsch
发明人： Pallab Midya , John Grosspietsch
IPC分类号： H04B138
CPC分类号： H03F1/3247 , H03F1/3241 , H03F1/3258 , H03F2200/336 , H03F2201/3233 , H04B1/00 , H04B1/04 , H04B2001/0425
摘要： A device (400), method (1200), phone (400) and basestation (400) for providing scalar measurement-based predistortion for linearization in a radio frequency RF power amplifier, includes: a polynomial predistortion unit (406), coupled to receive an input baseband signal and polynomial coefficient weights, for predistorting the baseband signal to provide a predistorted baseband signal in accordance with the polynomial coefficient weights; an RF modulator (402), coupled to the polynomial predistortion unit (406) and to an RF generator (403), for modulating the predistorted baseband signal to provide an RF signal; an RF power amplifier (401), coupled to the RF modulator (402) and to a power supply (408), for amplifying the RF signal to provide an amplified RF signal, a scalar cost function generator (405), coupled to receive the amplified RF signal, for computing a scalar cost function; and a coefficient update unit (407), coupled to receive the scalar out-of-band-energy cost function, for tuning the polynomial coefficients in accordance with minimizing the scalar cost function to provide a linear amplified RF signal.
摘要翻译： 一种用于在射频RF功率放大器中提供用于线性化的基于标量测量的预失真的装置（400），方法（1200），电话（400）和基站（400），包括：多项式预失真单元， 输入基带信号和多项式系数权重，用于对所述基带信号进行预失真以根据所述多项式系数权重提供预失真基带信号; 耦合到所述多项式预失真单元（406）和RF发生器（403）的RF调制器（402），用于调制所述预失真基带信号以提供RF信号; RF功率放大器（401），耦合到RF调制器（402）和电源（408），用于放大RF信号以提供放大的RF信号;标量成本函数发生器（405），被耦合以接收 放大的RF信号，用于计算标量成本函数; 以及系数更新单元（407），被耦合以接收标量带外能量成本函数，用于根据最小化标量成本函数来调整多项式系数以提供线性放大RF信号。
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公开(公告)号：US20120275544A1
公开(公告)日：2012-11-01
申请号：US13309862
申请日：2011-12-02
CPC分类号： H04L27/3809 , H03F1/025 , H03F3/24 , H03F2200/102 , H03F2200/435
摘要： A system according to one embodiment includes a digital data modulator configured to generate encoded symbols; an envelope detector configured to receive the encoded symbols and to estimate transmission power information associated with the encoded symbols; a peak detector configured to receive the transmission power information, detect a peak transmission power from two or more sequential data points of the received transmission power information, and to generate a power regulation signal representative of the detected peak transmission power; and a digital to analog converter (DAC) configured to receive the power regulation signal and to provide a reference voltage to a power supply associated with an RF amplifier.
摘要翻译： 根据一个实施例的系统包括被配置为生成编码符号的数字数据调制器; 包络检测器，被配置为接收编码符号并且估计与编码符号相关联的传输功率信息; 峰值检测器，被配置为接收发送功率信息，从所接收的发送功率信息的两个或更多个顺序数据点检测峰值发送功率，并产生表示检测到的峰值发送功率的功率调节信号; 以及被配置为接收功率调节信号并且向与RF放大器相关联的电源提供参考电压的数模转换器（DAC）。
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