power back-off

基本解释

• [电子、通信与自动控制技术]功率回退

英汉例句

双语例句

• Power back-off is often used in traditional PA to avoid from signal distortion when it surpasses the linear region.
  传统功率放大器采用功率回退来避免信号在峰值时越过线性区发生畸变，但这样会使其效率降低。
• 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。
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• Secondly, a study on power back-off algorithm. The crosstalk between the cables of the same bunch of twisted-pair is a major factor affecting VDSL2 rate, so we need back-off the power of VDSL2.
  功率回退算法研究：同一束双绞线线缆之间的串扰问题是影响VDSL2速率的一个主要因素，因此需要对其进行功率回退。

权威例句

• The price seems high, but RVs are really expensive, and back-up power will just be one more option that Good Sam members will check off.
  FORBES: German Company Invents Zero-Emission Power For RVs
• At 800 feet off the ground, I did a right 90-degree crosswind turn and pulled the power way back.
  FORBES: Flying The World's Smallest Business Jet

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词组短语

短语

• upstream power back -off 上行信道功率回馈

• power back-off更多词组

专业释义

电子、通信与自动控制技术

• 功率回退

  The RF amplifiers usually use power back-off to achieve the system’s linearity requirement under non-constant envelope modulation.
  非恒包络调制方式的使用使得射频放大器通常需要采用功率回退的方法来达到系统线性的要求。