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71. 发明申请

US20130127547A1 EFFICIENT SUPPLY VOLTAGE 有权
标题翻译：有效的电源电压
公开(公告)号：US20130127547A1
公开(公告)日：2013-05-23
申请号：US13638815
申请日：2011-03-29
申请人： Gerard Wimpenny
发明人： Gerard Wimpenny
IPC分类号： H03F1/02
CPC分类号： H03F1/02 , H03F1/0227 , H03F1/0255 , H03F3/68
摘要： There is disclosed an arrangement comprising: a driver stage connected to receive an input signal and generate a drive signal; a transformer comprising: a first winding of a first side of the transformer, across which winding a voltage signal is developed in dependence on the drive signal; and a second winding of the first side of the transformer, coupled to the first winding, which exhibits across it a voltage signal related to the voltage across the first winding, by swingback; and a first controller for comparing the voltage exhibited in the second winding to a first threshold voltage, and for selecting a first or a second supply voltage for the arrangement in dependence on the comparison.
摘要翻译：公开了一种装置，包括：连接以接收输入信号并产生驱动信号的驱动级; 变压器，包括：变压器的第一侧的第一绕组，根据驱动信号在其上卷绕电压信号; 以及耦合到第一绕组的变压器的第一侧的第二绕组，其通过回转在其上展现与第一绕组两端的电压相关的电压信号; 以及第一控制器，用于将所述第二绕组中显示的电压与第一阈值电压进行比较，并且用于根据所述比较来选择用于所述布置的第一或第二电源电压。

72. 发明申请

US20120219048A1 Joint Adaptive Bias Point Adjustment and Digital Pre-Distortion for Power Amplifier 有权
标题翻译：功率放大器的联合自适应偏置点调整和数字预失真
公开(公告)号：US20120219048A1
公开(公告)日：2012-08-30
申请号：US13036758
申请日：2011-02-28
申请人： Andrea Camuffo , Chi-Tao Goe , Bernhard Sogl , Sandro Pinarello , Jan-Erik Mueller , Nick Shute
发明人： Andrea Camuffo , Chi-Tao Goe , Bernhard Sogl , Sandro Pinarello , Jan-Erik Mueller , Nick Shute
IPC分类号： H04L25/03 , H04B17/00
CPC分类号： H04B1/0475 , H03F1/0255 , H03F1/0277 , H03F1/24 , H03F1/3241 , H03F1/3247 , H03F3/211 , H03F3/72 , H03F2200/321 , H03F2201/3233 , H03F2203/7215 , H03F2203/7236 , H04B2001/0425
摘要： One embodiment of the present invention relates to a method and apparatus are provided herein for reducing the power consumption of a transmission chain while maintaining an acceptable figure of merit (e.g., linearity). In one embodiment, an adaptive biasing element is configured to perform adaptive biasing to reduce current consumption of a transmission chain by adjusting the operating point of one or more transmission chain elements (e.g., power amplifier, mixer, etc.). However, since adaptive biasing may reduce the linearity of a transmitted signal, its use is limited by the degradation of figure of merit caused by the introduced non-linearities. Accordingly, a pre-distortion element may be configured to perform adaptive digital pre-distortion (DPD) on a transmission chain input signal to account for non-linearities generated through the adaptive biasing, therefore allowing the adaptive biasing to further reduce the current consumption while maintaining an acceptable figure of merit.
摘要翻译：本发明的一个实施例涉及一种方法和装置，用于在保持可接受的品质因数（例如线性度）的同时降低传输链的功率消耗。在一个实施例中，自适应偏置元件被配置为执行自适应偏置以通过调整一个或多个传输链元件（例如，功率放大器，混频器等）的工作点来减小传输链的电流消耗。然而，由于自适应偏置可以降低发射信号的线性度，所以其使用受到引入的非线性引起的品质因数的劣化的限制。因此，预失真元件可以被配置为在传输链输入信号上执行自适应数字预失真（DPD），以解决通过自适应偏置产生的非线性，从而允许自适应偏置进一步降低电流消耗，同时保持可接受的品质因数。

73. 发明申请

US20110170713A1 AMPLIFICATION APPARATUS 有权
标题翻译：放大装置
公开(公告)号：US20110170713A1
公开(公告)日：2011-07-14
申请号：US12883296
申请日：2010-09-16
申请人： Shogo SUGIHARA , Tadaharu SUNAGA , Norio ETOH
发明人： Shogo SUGIHARA , Tadaharu SUNAGA , Norio ETOH
IPC分类号： H03G3/00
CPC分类号： H03F1/52 , H03F1/0233 , H03F1/0255 , H03F3/181 , H03F2200/03 , H03F2200/321 , H03F2200/393 , H03F2200/435 , H03F2200/507 , H03F2200/511 , H03F2200/78 , H03G3/341
摘要： An amplification apparatus comprises: an amplifier circuit that amplifies an input audio signal and outputs an output audio signal; a first signal level determining unit that determines whether or not a signal level of the output audio signal outputted from the amplifier circuit is lower than a silence determination reference value; and a power-supply control unit that shifts the amplification apparatus from a power-on state to a power-off state, when it is determined that the signal level of the output audio signal outputted from the amplifier circuit is lower than the silence determination reference value.
摘要翻译：放大装置包括：放大电路，放大输入音频信号并输出输出音频信号; 第一信号电平确定单元，确定从放大器电路输出的输出音频信号的信号电平是否低于静音判定基准值; 以及电源控制单元，当确定从放大器电路输出的输出音频信号的信号电平低于静音确定基准时，将放大装置从通电状态转换到电源关闭状态值。

74. 发明申请

US20110032039A1 EFFICIENT POWER AMPLIFIER 有权
标题翻译：高效功率放大器
公开(公告)号：US20110032039A1
公开(公告)日：2011-02-10
申请号：US12910565
申请日：2010-10-22
申请人： Owen Jones , Lawrence R. Fincham
发明人： Owen Jones , Lawrence R. Fincham
IPC分类号： H03F3/04
CPC分类号： H03F1/02 , H03F1/0233 , H03F1/0255 , H03F3/20 , H03F3/68
摘要： A dynamic power supply for N amplifiers includes first and second power boost circuits which temporarily boost the positive or negative power supply rail, respectively. A control circuit monitors amplifier output signal levels and provides power boost control signals to the power boost circuits, which temporarily raise the positive supply voltage above the nominal voltage level in tandem with the highest output signal from the N amplifiers and lower the negative supply voltage below the nominal voltage level in tandem with the lowest output signal level from the N amplifiers. The power boost circuits each may be coupled to a reservoir capacitor from which current is drawn to provide the power boost. When inactive, the reservoir capacitors charge up from the respective power supply rails. The dynamic power supply is well suited for audio amplification systems.
摘要翻译： N放大器的动态电源包括分别临时提升正或负电源轨的第一和第二功率升压电路。控制电路监视放大器输出信号电平并向功率升压电路提供功率升压控制信号，这些信号暂时将正电源电压提高到额定电压电平以上，并与N个放大器的最高输出信号并联，并将负电源电压降至低于额定电压电平与N个放大器的最低输出信号电平一起。功率升压电路各自可以耦合到储存电容器，电容器从该电容器被拉出以提供功率提升。当不活动时，储存电容器从相应的电源轨充满电。动态电源非常适合音频放大系统。

75. 发明申请

US20070296504A1 Integrated implementation of a voltage boost follower and method therefor 有权
标题翻译：电压升压跟随器的集成实现及其方法
公开(公告)号：US20070296504A1
公开(公告)日：2007-12-27
申请号：US11472473
申请日：2006-06-22
申请人： Gordon G. Rabjohn , Johan Grundlingh , Edward J.W. Whittaker
发明人： Gordon G. Rabjohn , Johan Grundlingh , Edward J.W. Whittaker
IPC分类号： H03F3/04
CPC分类号： H03F1/0255 , H03F3/195 , H03F3/245 , H03F2200/102 , H03F2200/393 , H03F2200/435 , H03F2200/451 , H03F2200/471 , H03F2200/511 , H03F2200/513 , H03F2200/99
摘要： A collector boost circuit is disclosed for providing a first voltage in a first mode of operation to a power amplifier, and another voltage in a second mode of operation to the power amplifier. The collector boost circuit uses an indicator signal derived by an RF detector to switch between the first and the second mode of operation. The another voltage is a boosted voltage greater than the first voltage and is provided when required during peak excursions to prevent amplifier clipping through a boost capacitor. The another voltage is continuous and varies in accordance with the detected peak signal amplitude.
摘要翻译：公开了一种集电极升压电路，用于向功率放大器提供第一工作模式的第一电压，并向功率放大器提供处于第二工作模式的另一电压。集电极升压电路使用由RF检测器导出的指示信号在第一和第二操作模式之间切换。另一个电压是大于第一电压的升压电压，并且在峰值偏移期间需要时提供，以防止通过升压电容器的放大器限幅。另一个电压是连续的，并根据检测到的峰值信号振幅而变化。

76. 发明申请

US20050079835A1 Transmitting method and transmitter apparatus 失效
标题翻译：发射方式和发射机装置
公开(公告)号：US20050079835A1
公开(公告)日：2005-04-14
申请号：US10505084
申请日：2003-10-02
申请人： Shinichiro Takabayashi , Masato Ukena , Masayuki Orihashi , Michiaki Matsuo
发明人： Shinichiro Takabayashi , Masato Ukena , Masayuki Orihashi , Michiaki Matsuo
IPC分类号： H03F1/02 , H03F1/32 , H03G3/30 , H04B1/04 , H01Q11/12 , H03C1/62 , H04B17/00
CPC分类号： H03G3/3042 , H03F1/0211 , H03F1/025 , H03F1/0255 , H03F1/32 , H03F1/3247 , H03F1/3282 , H03F1/34 , H03F3/24 , H03F2200/102 , H03G2201/103 , H03G2201/206 , H03G2201/307 , H04B1/0475 , H04B2001/0416 , H04B2001/0433
摘要： A transmitting method and a transmitter apparatus, which need no manual adjustment, are disclosed. A delay amount of a delay means is automatically adjusted such that an out-of-band distortion component of a transmission signal is minimized, and a correct timing is produced by the method and the apparatus. In this transmitter apparatus, a first delay means adjusts a control timing over a voltage that controls a power amplifying means, and a distributor distributes an output from the power amplifying means in order to feedback parts of the output. A distortion adjusting means calculates a distortion component of the transmission signal by using the signal fed back by the distributor, and adjusts automatically a delay amount of the first delay means so as to minimize the distortion component. This structure allows eliminating manual adjustment, and obtaining high power-efficiency with fewer distortions.
摘要翻译：公开了不需要手动调整的发送方法和发送装置。自动调整延迟装置的延迟量，使得发送信号的带外失真分量最小化，并且通过该方法和装置产生正确的定时。在该发射机装置中，第一延迟装置调节控制功率放大装置的电压的控制定时，并且分配器分配来自功率放大装置的输出，以反馈输出部分。失真调整装置通过使用由分配器反馈的信号来计算发送信号的失真分量，并且自动调整第一延迟装置的延迟量，以使失真分量最小化。这种结构允许消除手动调整，并且以较少的失真获得高功率效率。

77. 发明授权

US06825726B2 Power amplifier with multiple power supplies 有权
公开(公告)号：US06825726B2
公开(公告)日：2004-11-30
申请号：US09902708
申请日：2001-07-12
申请人： John Barry French , Charles Robert May
发明人： John Barry French , Charles Robert May
IPC分类号： H03F304
CPC分类号： H03F1/025 , H03F1/0227 , H03F1/0238 , H03F1/0255
摘要： A power amplifier for receiving an input signal and providing a corresponding amplified output signal. One embodiment of the power amplifier includes a positive half circuit for supplying power to an amplifier during positive half waves of the output signal and a negative half circuit for supplying power to the amplifier during negative half waves of the output signal. Each half circuit has a main power supply, which is typically a switching regulator, and which supplies a first power signal to the amplifier. The slew rate of this first power signal is intentionally limited to control EMI emissions. Each half circuit also has a transient power supply which may be selectively engaged to provide a second power signal to the amplifier when the first power signal is insufficient to power the amplifier. Each half circuit may also include a low voltage power supply which provides a third power signal to the amplifier, allowing the main power supply to be disabled when a low power level is required, further reducing EMI emissions. Each half circuit has a control circuit which regulates the power output from the main and transient power supplies. The control circuit may provide a pulse width modulated control signal or a pulse density modulated control signal to control the switching regulator. If a pulse density control signal is provided, the switching regulator may be a resonant switching regulator. The power amplifier may be modified for use with a bridge amplifier, with multiple channels and may incorporate an overload detection circuit. In another embodiment of power amplifier the transient power supply is replaced with a transient control circuit that, when the first power supply is insufficient to power the amplifier, temporarily forces the first power supply to a 100% duty cycle, and then for a longer period, increases the duty cycle from its normal level to allow the first power supply to adequately power the amplifier more quickly.

78. 发明授权

US06538514B2 Compensation method in a class-G amplifier output stage 失效
标题翻译： G类放大器输出级的补偿方法
公开(公告)号：US06538514B2
公开(公告)日：2003-03-25
申请号：US10153837
申请日：2002-05-22
申请人： Barry A. Harvey
发明人： Barry A. Harvey
IPC分类号： H03H1126
CPC分类号： H03F3/3076 , H03F1/0244 , H03F1/0255 , H03F1/083 , H03F3/4517
摘要： An improved class-G amplifier (FIG. 2) is provided by adding a first capacitor (82) between the input of current mirror (18) and node p, and by adding a second capacitor (84) between the input of current mirror (20) and node m. The added capacitors (82) and (84) can be sized to stabilize frequency responses when high power supplies are enabled. The added capacitors (82) and (84) further function to reduce transient currents during switching through the crossover points between first upper and lower power supplies (Vsp1, Vsph) and between second upper and lower power supplies (Vsm1, Vsmh).
摘要翻译：通过在电流镜（18）的输入端和节点p之间增加第一电容器（82），并通过在电流镜（18）的输入端之间增加第二电容器（84）来提供改进的G类放大器（图2） 20）和节点m。增加的电容器（82）和（84）可以被设置为在高电源被使能时稳定频率响应。增加的电容器（82）和（84）还用于在切换通过第一上电源和下电源（Vsp1，Vsph）之间以及第二上电源和下电源（Vsm1，Vsmh）之间的交叉点时减少瞬态电流。

79. 发明申请

US20020175760A1 Compensation method in a class-G amplifier output stage 失效
标题翻译： G类放大器输出级的补偿方法
公开(公告)号：US20020175760A1
公开(公告)日：2002-11-28
申请号：US10153837
申请日：2002-05-22
发明人： Barry A. Harvey
IPC分类号： H03F003/26
CPC分类号： H03F3/3076 , H03F1/0244 , H03F1/0255 , H03F1/083 , H03F3/4517
摘要： An improved class-G amplifier (FIG. 2) is provided by adding a first capacitor (82) between the input of current mirror (18) and node p, and by adding a second capacitor (84) between the input of current mirror (20) and node m. The added capacitors (82) and (84) can be sized to stabilize frequency responses when high power supplies are enabled. The added capacitors (82) and (84) further function to reduce transient currents during switching through the crossover points between first upper and lower power supplies (Vspl, Vsph) and between second upper and lower power supplies (Vsml, Vsmh).
摘要翻译：通过在电流镜（18）的输入端和节点p之间增加第一电容器（82），并通过在电流镜（18）的输入端之间增加第二电容器（84）来提供改进的G类放大器（图2） 20）和节点m。增加的电容器（82）和（84）可以被设置为在高电源被使能时稳定频率响应。增加的电容器（82）和（84）还用于在切换通过第一上电源和下电源（Vspl，Vsph）之间以及第二上电源和下电源（Vsml，Vsmh）之间的交叉点时减少瞬态电流。

80. 发明公开

US20230344394A1 NON-LINEAR FUNCTION IN AN EARLY-SAMPLED HYBRID MULTI-LEVEL CONVERTER AMPLIFIER SYSTEM 审中-公开
公开(公告)号：US20230344394A1
公开(公告)日：2023-10-26
申请号：US18303750
申请日：2023-04-20
申请人： Cirrus Logic International Semiconductor Ltd.
发明人： John L. MELANSON , Abhishek MUKHERJEE , Lingli ZHANG , Zhaohui HE
IPC分类号： H03F3/217 , H03F1/32 , H03F1/02
CPC分类号： H03F3/2175 , H03F1/3264 , H03F1/0255 , H03F2200/351 , H03F2200/03
摘要： A system may include an analog loop filter comprising a plurality of analog integrators, the analog loop filter configured to receive an analog signal input and a feedback output signal, at least one sampler for sampling outputs of the analog integrators, a second loop filter coupled between an output of an analog pulse-width modulation driver and a digital pulse-width modulation controller, wherein the second loop filter comprises at least one integrator and is configured to receive sampled outputs of the analog integrators from the at least one sampler and receive a feedback pulse-width modulation signal from the analog pulse-width modulation driver, and a correction subsystem configured to apply a non-linear function to a signal path of the second loop filter in order to compensate for non-linearity introduced as a result of sampling outputs of the analog integrators.

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