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    • 4. 发明公开
    • 펄스 변조기로부터의 펄스 변조된 참조 신호의 전력 증폭 동안에 스위칭 전력 증폭단에 도입되는 비선형성 및 잡음의 소스에 대하여 보정하는 방법 및 시스템
    • 一类D级电源故障校正系统
    • KR1020090091826A
    • 2009-08-28
    • KR1020097015379
    • 2007-12-21
    • 아이스파워 에이/에스
    • 닐슨,올레네이스
    • H03F1/32H03F3/217
    • H03F3/217H03F1/32H03F2200/03H03F2200/144H03F2200/351H03F2200/372H03M1/1033H03M1/822
    • The present invention relates to a method for correcting for a source of non-linearity and noise introduced in a switching power amplification stage during power amplification of a pulse-modulated reference signal from a pulse modulator, where the method comprises the following steps:-providing an output stage embedded in an analogue self-oscillating control loop able to receive a pulse-referenced input signal;-generating a feedback signal from the switching power amplification stage or after a demodulation filter;-deriving an error signal by comparing the feedback signal with the reference signal;-filtering the error signal by a low pass filter for reducing the higher harmonics of the carrier;-adding a compensator for generating high loop gain in the audio band;-feeding the compensator output to a zero cross detector or comparator, thus providing a carrier for re-modulation or re-timing by feeding the filtered signal to a zero cross detector or comparator, which controls the output stage. The invention furthermore relates to various systems for implementing the above method. ® KIPO & WIPO 2009
    • 本发明涉及一种用于校正在来自脉冲调制器的脉冲调制参考信号的功率放大期间在开关功率放大级中引入的非线性和噪声源的方法,其中该方法包括以下步骤: - 提供 嵌入在能够接收基于脉冲参考的输入信号的模拟自振荡控制环路中的输出级;从开关功率放大级产生反馈信号或在解调滤波器之后产生反馈信号; - 通过将反馈信号与 参考信号; - 通过低通滤波器滤波误差信号以减小载波的高次谐波; - 添加用于在音频带中产生高环路增益的补偿器; - 将补偿器输出馈送到零交叉检测器或比较器, 从而通过将滤波的信号馈送到过零检测器或比较器来提供用于再调制或重新定时的载波,该过零检测器或比较器控制输出st 年龄。 本发明还涉及用于实现上述方法的各种系统。 ®KIPO&WIPO 2009