...：直接序列扩频(Direct Sequence Spreadspectrum)、跳频(Frequency Hoppmg)、跳时(Time Hoppmg)、宽带线性调频(Chip Modulation)等方式。以上方法中最常用的是直接序列扩频和跳频。
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pulse width modulation chip 脉宽调制芯片
With single polar SPWM(Sine Pulse Width Modulation), the whole solution of hardware and software is presented based on the resource of the DSP controller chip.
该系统采用单极性调制的SPWM方式，根据DSP芯片的各类资源给出了一套具体的数字化实施方案。
This paper introduces a method of FSK modulation and demodulation using CMOS phase locked-loop chip CD4046.
文章介绍了一种利用CMOS锁相环芯片CD 4046实现FSK信号调制与解调的方法。
Pulse Width Modulation device chip is designed by the reverse design method.
脉宽调制器芯片采用逆向设计方法完成。
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