公开(公告)号：US20100134184A1

公开(公告)日：2010-06-03

申请号：US12325572

申请日：2008-12-01

Applicant: GEORGE R. SARKEES ,  LEE V. NAGLE

Inventor： GEORGE R. SARKEES ,  LEE V. NAGLE

IPC: H03G3/20

CPC classification number: H03G3/3042 ,  H03G2201/208

Abstract: A hybrid power control system (102) that selectively applies voltage-based gain control and current-based gain control and method (300) of controlling a power amplifier (104) gain are presented. A voltage-based gain control signal (120) is applied to control the gain of the power amplifier when a level output power is indicated by a power contour signal (132). Whether the power amplifier is saturated is identified. A current-based gain control signal (122) is applied to control the gain of the power amplifier when the power amplifier is saturated and a decrease in output power is indicated by the power contour signal.

Abstract translation: 提出了选择性地施加基于电压的增益控制和基于电流的增益控制的混合功率控制系统（102）和控制功率放大器（104）增益的方法（300）。 当功率轮廓信号（132）指示电平输出功率时，施加基于电压的增益控制信号（120）来控制功率放大器的增益。 识别功率放大器是否饱和。 施加基于电流的增益控制信号（122）以在功率放大器饱和时控制功率放大器的增益，并且由功率轮廓信号指示输出功率的降低。

公开(公告)号：US07859334B2

公开(公告)日：2010-12-28

申请号：US12325572

申请日：2008-12-01

Applicant: George R. Sarkees ,  Lee V. Nagle

Inventor： George R. Sarkees ,  Lee V. Nagle

IPC: H03G3/20

CPC classification number: H03G3/3042 ,  H03G2201/208

Abstract: A hybrid power control system (102) that selectively applies voltage-based gain control and current-based gain control and method (300) of controlling a power amplifier (104) gain are presented. A voltage-based gain control signal (120) is applied to control the gain of the power amplifier when a level output power is indicated by a power contour signal (132). Whether the power amplifier is saturated is identified. A current-based gain control signal (122) is applied to control the gain of the power amplifier when the power amplifier is saturated and a decrease in output power is indicated by the power contour signal.

Abstract translation: 提出了选择性地施加基于电压的增益控制和基于电流的增益控制的混合功率控制系统（102）和控制功率放大器（104）增益的方法（300）。 当功率轮廓信号（132）指示电平输出功率时，施加基于电压的增益控制信号（120）来控制功率放大器的增益。 识别功率放大器是否饱和。 施加基于电流的增益控制信号（122）以在功率放大器饱和时控制功率放大器的增益，并且由功率轮廓信号指示输出功率的降低。

公开(公告)号：US20050206447A1

公开(公告)日：2005-09-22

申请号：US10803771

申请日：2004-03-18

Applicant: Ryo Yamazaki ,  William Noellert

Inventor： Ryo Yamazaki ,  William Noellert

IPC: H03G3/00 ,  H03G3/20 ,  H03G3/30

CPC classification number: H03F1/52 ,  H03G3/004 ,  H03G3/3047 ,  H03G2201/103 ,  H03G2201/206 ,  H03G2201/208 ,  H03G2201/307 ,  H03G2201/708

Abstract: When a power amplifier control loop operates near or in saturation, the quality of the output signal can be degraded and an over current condition can occur. To prevent this, the output signal of the power amplifier is detected, converted to digital, and then converted into the frequency spectrum by means of a Fast Fourier Transform. The spectral characteristics of the output signal are analyzed to determine if the power amplifier control loop is approaching or operating in saturation mode. This determination is made by looking at the power of the output signal at various frequencies. If the output at these frequencies exceeds a threshold value, the power amplifier control loop is approaching saturation. In this situation, the output of the power amplifier can be adjusted to prevent loop saturation. This can be accomplished by reducing the supply voltage to the power amplifier or adjusting the bias voltage.

Abstract translation: 当功率放大器控制回路在接近或饱和状态下工作时，输出信号的质量可能会下降，可能会出现过电流状态。 为了防止这种情况，功率放大器的输出信号被检测，转换为数字，然后通过快速傅里叶变换转换成频谱。 分析输出信号的频谱特性，以确定功率放大器控制环路是否接近或在饱和模式下工作。 通过查看各种频率的输出信号的功率来进行该确定。 如果这些频率的输出超过阈值，则功率放大器控制回路接近饱和。 在这种情况下，可以调节功率放大器的输出，以防止环路饱和。 这可以通过降低功率放大器的电源电压或调整偏置电压来实现。