Contour modulation is a technique in which a phase-modulated signal waveform and amplifier output impedance work together to maintain higher efficiency over a sizable output power back-off.
轮廓调制结合了一种相位调制信号的波形和放大器的输出阻抗，可在某个较大型输出电源关闭后保持更高的效率。
Part of the output of an amplifier can be fed back to get rid of sound distortion.
放大器的部分输出可以进行反馈以消除声音的失真。
Part of the output of an amplifier can be fed back to get rid of sound distortion .
放大器部分输出可以进行反馈以消除声音的失真。
Negative feedback occurs when a portion of the output signal of an amplifier is fed back and subtracted from the input signal, causing a reduction in the effective input signal.
所谓负反馈是指输出信号的一部分被送回输入端，与输入信号相减，从而削弱了有效输入信号。
I wish you: amplifier back into, horse off the ground, the family business Dacheng, smile Allure!
祝你：大器早成，马到功成，家业大成，笑容倾城！
The numerical method to calculate the signal and pump interaction in back pumped fiber Raman amplifier is present.
研究了反向泵浦光纤喇曼放大器中泵浦和信号相互作用的数值求解方法。
If we simply back-off the input signal to achieve the linearity required for the power amplifier, the power amplifier efficiency will be very low for high PAR signals.
虽然通过功率回退，可以得到较好的线性度，但是对于峰均比高的信号而言，效率就会很低。
If we simply back-off the input signal to achieve the linearity required for the power amplifier, the power amplifier efficiency will be very low for high PAR signals.
虽然通过功率回退，可以得到较好的线性度，但是对于峰均比高的信号而言，效率就会很低。
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