Orthogonal Multi-Carrier Modulation(OMCM) is adopted to overcome the frequency selectivity and time variation of low-voltage power line channel.
为克服低压电力线信道的频率选择性和时变性，系统采用正交多载波方式传输信息。
In a second sub-mode ('low output power sub-mode'), VOUT is regulated using pulse width modulation, but the converter switching frequency is fixed at a first frequency.
在第二子模式（“低输出功率子模式”）中，使用脉冲宽度调制来调节VOUT，但转换器开关频率固定在第一频率。
RF power modulation is used to control the codeposition and the selective silicon removal steps with the later proceeds whenever the RF power is turned off or reduced to a low level.
使用RF功率调变控制该共沉积作用及该选择性硅去除步骤，后者步骤总是在关闭该R F功率或是将其降至低水准时进行。
A novelty space vector pulse width modulation (SVPWM) technique for the two-phase inverter-fed asynchronous motors system is proposed, which can be widely used in the low or middle power level field.
研究了二相逆变器-异步电动机系统的空间矢量脉宽调制(SVPWM)控制技术。
Currcnt-type four quadrant converter is an AC-DC converting device with pulse width modulation, whose advantages are high power factor, low harmonic current and convenient regeneration etc.
电流型四象限变流器是一种脉冲宽度调制的交直流变换装置，具有功率因数高、谐波电流小、再生方便等优点。
For high-speed and low-drive -power light, modulation, the advantages of the use of asymmetric strip line was shown.
对结果的分析讨论表明，非对称微带电极用于极性反转电极结构对在高频波段实现低驱动功率光调制是十分有效的。
For high-speed and low-drive -power light, modulation, the advantages of the use of asymmetric strip line was shown.
对结果的分析讨论表明，非对称微带电极用于极性反转电极结构对在高频波段实现低驱动功率光调制是十分有效的。
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