公开(公告)号：WO2007147240A1

公开(公告)日：2007-12-27

申请号：PCT/CA2007/001091

申请日：2007-06-21

Applicant: SIGE SEMICONDUCTOR INC. ,  RABJOHN, Gordon G. ,  GRUNDLINGH, Johan ,  WHITTAKER, Edward J. W.

Inventor： RABJOHN, Gordon G. ,  GRUNDLINGH, Johan ,  WHITTAKER, Edward J. W.

IPC: H03F3/189 ,  H02J15/00 ,  H02M3/07 ,  H03F1/32 ,  H03F3/20 ,  H04B1/04 ,  H04B1/40

CPC classification number: H03F1/0255 ,  H03F3/195 ,  H03F3/245 ,  H03F2200/102 ,  H03F2200/393 ,  H03F2200/435 ,  H03F2200/451 ,  H03F2200/471 ,  H03F2200/511 ,  H03F2200/513 ,  H03F2200/99

Abstract: 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.

Abstract translation: 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。

公开(公告)号：WO2006088589A3

公开(公告)日：2007-04-19

申请号：PCT/US2006001512

申请日：2006-01-17

Applicant: SKYWORKS SOLUTIONS INC ,  RIPLEY DAVID S

Inventor： RIPLEY DAVID S

IPC: H03G3/10

CPC classification number: H03F1/0216 ,  H03F2200/426 ,  H03F2200/462 ,  H03F2200/471 ,  H03F2200/474 ,  H03G3/004

Abstract: According to an exemplary embodiment, an amplification module includes a power control circuit. The amplification module further includes a power amplifier coupled to the power control circuit and configured to draw a supply current and receive a supply voltage from the power control circuit. The power control circuit is configured to control a DC power provided to the power amplifier by controlling a product of a sense current, which is a mirror current of the supply current, and the supply voltage. The power control circuit includes a feedback voltage that corresponds to the product of the sense current and the supply voltage. The power control circuit further includes an analog multiplier circuit configured to receive the sense current and the supply voltage and generate the feedback voltage. The power control circuit further includes a differential error amplifier configured to compare the feedback voltage to a control voltage.

Abstract translation: 根据示例性实施例，放大模块包括功率控制电路。 放大模块还包括功率放大器，耦合到功率控制电路并且被配置为从功率控制电路抽取供电电流并接收电源电压。 功率控制电路被配置为通过控制作为供应电流的反射电流的感测电流和电源电压的乘积来控制提供给功率放大器的DC电力。 功率控制电路包括对应于感测电流和电源电压的乘积的反馈电压。 功率控制电路还包括被配置为接收感测电流和电源电压并产生反馈电压的模拟乘法器电路。 功率控制电路还包括差分误差放大器，其被配置为将反馈电压与控制电压进行比较。

公开(公告)号：WO2006088589A2

公开(公告)日：2006-08-24

申请号：PCT/US2006/001512

申请日：2006-01-17

Applicant: SKYWORKS SOLUTIONS, INC. ,  RIPLEY, David, S.

Inventor： RIPLEY, David, S.

IPC: H03G3/10

CPC classification number: H03F1/0216 ,  H03F2200/426 ,  H03F2200/462 ,  H03F2200/471 ,  H03F2200/474 ,  H03G3/004

Abstract: According to an exemplary embodiment, an amplification module includes a power control circuit. The amplification module further includes a power amplifier coupled to the power control circuit and configured to draw a supply current and receive a supply voltage from the power control circuit. The power control circuit is configured to control a DC power provided to the power amplifier by controlling a product of a sense current, which is a mirror current of the supply current, and the supply voltage. The power control circuit includes a feedback voltage that corresponds to the product of the sense current and the supply voltage. The power control circuit further includes an analog multiplier circuit configured to receive the sense current and the supply voltage and generate the feedback voltage. The power control circuit further includes a differential error amplifier configured to compare the feedback voltage to a control voltage.

Abstract translation: 根据示例性实施例，放大模块包括功率控制电路。 放大模块还包括功率放大器，耦合到功率控制电路并且被配置为绘制电源电流并从功率控制电路接收电源电压。 功率控制电路被配置为通过控制作为供电电流的反射电流的感测电流和电源电压的乘积来控制提供给功率放大器的DC电力。 功率控制电路包括对应于感测电流和电源电压的乘积的反馈电压。 功率控制电路还包括被配置为接收感测电流和电源电压并产生反馈电压的模拟乘法器电路。 功率控制电路还包括差分误差放大器，其被配置为将反馈电压与控制电压进行比较。

公开(公告)号：WO2005067609A2

公开(公告)日：2005-07-28

申请号：PCT/US2005/000333

申请日：2005-01-07

Applicant: ALTEC LANSING TECHNOLOGIES, INC.

Inventor： ZEPP, David

IPC: H03F1/30 ,  H03F1/32 ,  H03F3/217 ,  H03G7/00

CPC classification number: H03F3/217 ,  H03F1/30 ,  H03F1/32 ,  H03F3/2173 ,  H03F2200/351 ,  H03F2200/471 ,  H03F2200/78 ,  H03G7/00

Abstract: A circuit according to the present invention improves the power supply rejection ratio for a pulse width modulated digital amplifier and can be used as a compressor and/or limiter. The circuit preferably operates by using voltage level translation to vary the amplitude of a triangle wave in response to changes in power supply voltage prior to input of the wave into a comparator of the PWM device. Because the circuit operates to improve power supply rejection, little or no distortion is introduced into the signal when used as a compressor and/or limiter. Additionally, the circuit is optionally implemented in a Class D amplifier, and provides a lower cost of implementation than conventional designs in such implementations.

Abstract translation: 根据本发明的电路提高了脉宽调制数字放大器的电源抑制比，并且可以用作压缩器和/或限制器。 该电路优选地通过使用电压电平转换来操作，以响应于在将PWM输入到PWM器件的比较器之前的电源电压的变化来改变三角波的幅度。 由于该电路用于改善电源抑制，当用作压缩器和/或限制器时，很少或没有引入失真信号。 此外，电路可选地在D类放大器中实现，并且在这种实现中提供比常规设计更低的实现成本。

公开(公告)号：WO2005062463A1

公开(公告)日：2005-07-07

申请号：PCT/US2004/038730

申请日：2004-11-17

Applicant: INTEL CORPORATION ,  GLASS, Kevin ,  SMITH, Malcolm

Inventor： GLASS, Kevin ,  SMITH, Malcolm

IPC: H03F1/22

CPC classification number: H03F1/302 ,  H03F1/22 ,  H03F3/3435 ,  H03F2200/18 ,  H03F2200/471 ,  H03F2200/93

Abstract: An amplifier includes a Darlington transistor pair (110, 120) and a biasing network to increase bias currents in an input transistor (110). Circuit (100) includes in put transistor (110), second transistior (120), radio frequency (RF) choke (112), degeneration inductor (122), capacitopr (132) and voltage controlled current source (130). Input transistor (110) and second transistor (120) are coupled to form a Darlington transistor pair with the collectors coupled together at node (142), and the emitter of input transistor (120) at node (111).

Abstract translation: 放大器包括达林顿晶体管对（110,120）和偏置网络，以增加输入晶体管（110）中的偏置电流。 电路（100）包括放置晶体管（110），第二变压器（120），射频（RF）扼流圈（112），退化电感器（122），电容器（132）和压控电流源（130）。 输入晶体管（110）和第二晶体管（120）被耦合以与节点（142）处耦合在一起的集电极和节点（111）处的输入晶体管（120）的发射极形成达林顿晶体管对。