1) direct digital synthesis(DDS)
直接数字式频率合成(DDS)
2) direct digital frequency synthesis
直接数字频率合成(DDS)
1.
The signal source of the magnetic field is based on the AT89S52 MCU and DDS chip AD9854,which is developed with the technique of Direct Digital frequency Synthesis(DDS).
阐述了胶囊微机器人的驱动原理与旋转磁场的产生方法,并结合直接数字频率合成(DDS)技术,开发了以单片机AT89S52和DDS芯片AD9854为核心的旋转磁场驱动信号源。
3) DDS
直接数字频率合成(DDS)
1.
Our design that multifunctional waveform generator based on DDS is just according to the defects of the signal generators used at present.
直接数字频率合成(DDS)技术是于二十世纪七十年代提出的一种新的频率合成技术。
2.
PLL,DDS,FPGA are discussed in detail,PLL and DDS frequency synthesizer are combined to assure high performance:broad bandwidth,high frequency-agile rate,low spurs and low phase noise,and the integrated module is designed and produced,the size is 136×130×18 mm.
以锁相环(PLL)、直接数字频率合成(DDS)、现场可编程逻辑器件(FPGA)等为主要的研究对象,对PLL和DDS结合起来实现宽带、捷变频、低杂散和低相位噪声的上变频方案进行了详细描述。
3.
DDS and digital phrase-lock technology have been applied in FPGA to improve the accuracy of frequency tracking.
采用高精度的直接数字频率合成(DDS)和数字锁相环技术,实现了高频率跟踪精度。
4) direct digital frequency synthesis(DDS)
直接数字频率合成(DDS)
5) direct digital synthesis(DDS)
直接数字频率合成(DDS)
补充资料：变换器式频率表(见交换器式电表)
变换器式频率表(见交换器式电表)
transducer type frequency meter
曰‘口，”IuullqISn}P旧iUbloo变换器式颇率表meter)(transdueer tyPe见变换器式电表。frequeney
说明：补充资料仅用于学习参考，请勿用于其它任何用途。
参考词条