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公开(公告)号：US10129642B2
公开(公告)日：2018-11-13
申请号：US15055705
申请日：2016-02-29
申请人： QUANTANCE, INC.
发明人： Vikas Vinayak
摘要： An audio system comprises an audio driver configured to receive a target audio signal and a feedback signal and to generate an adjusted audio signal responsive to the target audio signal and the feedback signal. A loudspeaker is configured to convert the adjusted audio signal into acoustical sound. A test signal generator is configured to generate a test signal having a higher frequency than the target audio signal. The test signal causes a test current to flow through the loudspeaker. A current sensing circuit is configured to measure the test current flowing through the loudspeaker and to generate a current sense signal indicative of the test current. A feedback circuit is configured generates the feedback signal responsive to the current sense signal.
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公开(公告)号：US09857862B2
公开(公告)日：2018-01-02
申请号：US15370258
申请日：2016-12-06
申请人： QUANTANCE, INC.
CPC分类号： G06F1/324 , G06F1/3287 , G06F1/3296 , H02M3/156 , H02M3/1582 , H02M2001/0025 , H02M2001/0045 , H02M2001/007 , H02M2001/008 , H04B1/0458 , H04B1/1607
摘要： A power supply for a radio frequency (RF) power amplifier that amplifies an RF input signal into an RF output signal and a method of operation in the power supply. The power supply comprises a first power converter to convert an input voltage to the power supply into a first supply voltage of the RF power amplifier. The power supply comprises a second power converter to receive the input voltage and the first supply voltage and to selectively convert either the input voltage or the first supply voltage into at least a portion of a second supply voltage of the RF power amplifier.
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公开(公告)号：US09825592B2
公开(公告)日：2017-11-21
申请号：US15015257
申请日：2016-02-04
申请人： QUANTANCE, INC.
发明人： Vikas Vinayak
CPC分类号： H03F1/0233 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/245 , H03F2200/451 , H03F2200/465 , H03F2200/555
摘要： A self-setting power supply monitors a supply current drawn by a power amplifier and sets a supply voltage based on the supply current to achieve efficient power operation. In order to maintain operation of the power amplifier above minimum operating conditions, the self-setting power supply sets the supply voltage to the minimum operating voltage when the supply current drops below a threshold bias current. When the supply current is above the threshold bias current, the self-setting power supply adjusts the supply voltage approximately proportionally to the supply current to maintain approximately constant gain of the power amplifier.
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公开(公告)号：US09301071B2
公开(公告)日：2016-03-29
申请号：US13797590
申请日：2013-03-12
申请人： Quantance, Inc.
发明人： Vikas Vinayak
CPC分类号： H04R3/08 , H04R3/002 , H04R3/04 , H04R29/001 , H04R29/003
摘要： An audio system comprises an audio driver configured to receive a target audio signal and a feedback signal and to generate an adjusted audio signal responsive to the target audio signal and the feedback signal. A loudspeaker is configured to convert the adjusted audio signal into acoustical sound. A test signal generator is configured to generate a test signal having a higher frequency than the target audio signal. The test signal causes a test current to flow through the loudspeaker. A current sensing circuit is configured to measure the test current flowing through the loudspeaker and to generate a current sense signal indicative of the test current. A feedback circuit is configured generates the feedback signal responsive to the current sense signal.
摘要翻译： 音频系统包括被配置为接收目标音频信号和反馈信号并且响应于目标音频信号和反馈信号产生经调整的音频信号的音频驱动器。 扬声器被配置为将调整好的音频信号转换成声音。 测试信号发生器被配置为产生具有比目标音频信号更高的频率的测试信号。 测试信号使测试电流流过扬声器。 电流感测电路被配置为测量流过扬声器的测试电流并且产生指示测试电流的电流感测信号。 配置反馈电路响应于电流检测信号产生反馈信号。
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公开(公告)号：US09271236B2
公开(公告)日：2016-02-23
申请号：US14207296
申请日：2014-03-12
申请人： Quantance, Inc.
发明人： Serge Francois Drogi
CPC分类号： H04W52/0238 , H03F1/0227 , H03F1/0238 , H03F3/24 , H03F2200/102 , H04B1/04 , H04B2001/0416 , H04L43/16 , Y02D70/00 , Y02D70/40
摘要： An envelope tracking transceiver dynamically adjusts envelope tracking parameters to achieve the desired tradeoff between noise performance and power efficiency. When higher levels of noise are acceptable, the envelope tracking transceiver dynamically adjusts transmitter parameters to achieve better power efficiency while sacrificing noise performance. When lower levels of noise are desired, the envelope tracking transceiver dynamically adjusts parameters to achieve better noise performance while sacrificing efficiency.
摘要翻译： 信封跟踪收发器动态地调整包络跟踪参数，以实现噪声性能和功率效率之间的期望权衡。 当更高等级的噪声可以接受时，信封跟踪收发器可以动态地调整发射机参数，从而在牺牲噪声性能的同时实现更好的功率效率。 当需要较低级别的噪声时，包络跟踪收发器可以动态调整参数，以达到更好的噪声性能，同时牺牲效率。
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6.发明授权公开(公告)号：US08952753B2
公开(公告)日：2015-02-10
申请号：US13385406
申请日：2012-02-17
CPC分类号： H02M3/156 , H02M1/14 , H02M2001/0045 , H02M2003/1566
摘要： A highly efficient, high control bandwidth and high-speed power supply with a linear driver and a switching regulator for regulating an output based on a control signal. The linear driver has a first input for receiving the control signal and a second input connected to the output for receiving negative feedback. The driver's output is controlled by its two inputs and has a capacitor connected in series with it to generate a capacitor voltage VC responsive to the DC and low frequency components in the driver's output. The switching regulator has a control input and a regulator output connected in a regulator feedback loop. The control input receives capacitor voltage VC and the regulator feedback loop minimizes capacitor voltage VC. Thus, switching regulator takes over the generation of DC and low frequency components, while the linear driver provides high frequency output current components.
摘要翻译： 高效，高控制带宽和高速电源，具有线性驱动器和开关稳压器，用于根据控制信号调节输出。 线性驱动器具有用于接收控制信号的第一输入端和连接到输出的用于接收负反馈的第二输入端。 驱动器的输出由其两个输入控制，并具有与其串联的电容器，以响应于驱动器输出中的DC和低频分量产生电容器电压VC。 开关稳压器具有控制输入和调节器输出，连接在稳压器反馈环路中。 控制输入接收电容电压VC，调节器反馈回路最小化电容电压VC。 因此，开关调节器接管直流和低频部件的产生，而线性驱动器提供高频输出电流分量。
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7.发明申请公开(公告)号：US20140266423A1
公开(公告)日：2014-09-18
申请号：US14208528
申请日：2014-03-13
申请人： Quantance, Inc.
CPC分类号： H03F1/0222 , H03F1/0227 , H03F1/0238 , H03F1/32 , H03F3/189 , H03F3/19 , H03F3/21 , H03F3/24 , H03F2200/102 , H03F2200/451
摘要： An RF PA system that generates its own local characterization information. The RF PA system includes a PA to generate a RF output signal from a RF input signal, the PA powered by a supply voltage. A characterization block generates characterization information corresponding to a relationship between the supply voltage and performance (e.g., gain, power efficiency, distortion, receive band noise) of the RF PA system for a plurality of levels of one or more operating conditions (e.g., temperature, operating frequency, modulation format, antennae mismatch, etc.) of the RF PA system. An amplitude estimator block estimates an amplitude of the RF input signal. A supply control block generates a supply voltage control signal for controlling the supply voltage based on the characterization information and the amplitude of the RF input signal.
摘要翻译： 产生其本地特征信息的RF PA系统。 RF PA系统包括用于从RF输入信号产生RF输出信号的PA，PA由供电电压供电。 表征块产生对应于RF PA系统的电源电压和性能之间的关系（例如，增益，功率效率，失真，接收带噪声）的表征信息，用于多个一个或多个操作条件的水平（例如，温度 ，工作频率，调制格式，天线不匹配等）。 幅度估计器块估计RF输入信号的幅度。 电源控制块基于特征信息和RF输入信号的幅度产生用于控制电源电压的电源电压控制信号。
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公开(公告)号：US08718579B2
公开(公告)日：2014-05-06
申请号：US13779461
申请日：2013-02-27
申请人： Quantance, Inc.
发明人： Serge Francois Drogi
CPC分类号： H03F1/0205 , H03F1/0227 , H03F3/19 , H03F3/211 , H03F3/245 , H03F2200/102 , H03F2200/451 , H04B1/0475 , H04B2001/0416
摘要： An envelope tracking power amplifier system time-aligns a supply voltage to an input signal to a power amplifier. The power supply operates in a static mode for low amplitude input signals and operates in a dynamic mode for high amplitude input signals. In the static mode, the power supply produces a substantially constant supply voltage independent of the amplitude of the input signal. In the dynamic mode the power supply produces a dynamically varying envelope tracking supply voltage based on the amplitude of the input signal. A first delay is determined based on portions of the input and output signals captured during static operation of the power supply and a second delay is determined based on portions of the input and output signals captured during dynamic operation. A delay mismatch is estimated based on a difference between the first and second delays.
摘要翻译： 信封跟踪功率放大器系统将电源电压与功率放大器的输入信号进行时间对齐。 电源在低振幅输入信号的静态模式下工作，并在高幅度输入信号的动态模式下工作。 在静态模式下，电源产生与输入信号幅度无关的基本恒定的电源电压。 在动态模式下，电源基于输入信号的幅度产生动态变化的包络跟踪电源电压。 基于在电源的静态操作期间捕获的输入和输出信号的部分来确定第一延迟，并且基于在动态操作期间捕获的输入和输出信号的部分来确定第二延迟。 基于第一和第二延迟之间的差异来估计延迟失配。
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公开(公告)号：US20140091861A1
公开(公告)日：2014-04-03
申请号：US14098248
申请日：2013-12-05
申请人： Quantance, Inc.
IPC分类号： H03F1/02
CPC分类号： H03F1/0238 , G05F1/575 , H03C1/00 , H03F1/0211 , H03F1/0222 , H03F1/0233 , H03F3/189 , H03F3/19 , H03F3/20 , H03F3/211 , H03F2200/411 , H03F2200/451 , H03F2200/504 , H03F2203/21193
摘要： A power supply system includes a high-speed power supply providing a first output, operating in conjunction with an externally supplied DC source or low frequency power supply which provides a second output. A frequency blocking power combiner circuit combines the first and second outputs to generate a third output in order to drive a load, while providing frequency-selective isolation between the first and second outputs. A feedback circuit coupled to the combined, third output compares this combined, third output with a predetermined control signal and generates a control signal for controlling the high-speed power supply, based on a difference between the third output and the predetermined control signal. The feedback circuit does not control the DC source or the low frequency power supply, but controls only the high-speed power supply.
摘要翻译： 电源系统包括提供第一输出的高速电源，与外部提供的DC电源或提供第二输出的低频电源一起工作。 频率阻断功率合成器电路组合第一和第二输出以产生第三输出以驱动负载，同时在第一和第二输出之间提供频率选择性隔离。 耦合到组合的第三输出的反馈电路将该组合的第三输出与预定的控制信号进行比较，并且基于第三输出和预定控制信号之间的差产生用于控制高速电源的控制信号。 反馈电路不控制直流电源或低频电源，只控制高速电源。
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公开(公告)号：US20130214858A1
公开(公告)日：2013-08-22
申请号：US13385406
申请日：2012-02-17
CPC分类号： H02M3/156 , H02M1/14 , H02M2001/0045 , H02M2003/1566
摘要： A highly efficient, high control bandwidth and high-speed power supply with a linear driver and a switching regulator for regulating an output based on a control signal. The linear driver has a first input for receiving the control signal and a second input connected to the output for receiving negative feedback. The driver's output is controlled by its two inputs and has a capacitor connected in series with it to generate a capacitor voltage VC responsive to the DC and low frequency components in the driver's output. The switching regulator has a control input and a regulator output connected in a regulator feedback loop. The control input receives capacitor voltage VC and the regulator feedback loop minimizes capacitor voltage VC. Thus, switching regulator takes over the generation of DC and low frequency components, while the linear driver provides high frequency output current components.
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