1) frequency division
分频
1.
The application of frequency division technique in parameter measurement for SAW sensor
分频技术在声表面波传感器频率测量中的应用
2.
In order to further improve the output power and efficiency of high frequency power amplifier,a solution is proposed by means of using the single chip computer and CPLD frequency division which can develop radiofrequency carrier wave signal,and use double-power-supply class-D high frequency power amplifier as the power amplifier.
为了进一步提高高频功率放大器的输出功率和效率,提出了借助单片机及CPLD分频产生射频载波信号,并用双电源D类高频功率放大器作为功放的方法。
3.
Some main circuit s features,including the pulsed drive signals generation,logic frequency division and phase deviation, driver and singlerpole feedback are analyzed,and at last the results of experiment are given.
介绍了一种基于复杂可编程逻辑集成芯片(CPLD)的超声波电动机控制器设计电路,分析了各部分的电路结构及特点,讨论了驱动信号脉冲生成,逻辑分频移相,驱动控制和弧极信号反馈电路的设计,给出了实验结果的波形及结果分析。
2) frequency-shared analysis
分频分析
1.
Seismic inversion based on logging trace frequency-shared analysis;
基于测井曲线分频分析的地震反演
3) piecewise-frequency division
分段分频
1.
0 for connecting with upper computer and figure work s interface,clock piecewise-frequency division method adopted in low-band frequency,MCU for control,a dral-channels portable type arbitrary waveform generator with high-precision was developed in DDS.
0完成与上位机接口及图形操作界面,对低频段采用时钟分段分频法,在MCU的控制下实现DDS低频高精度双通道±8V,0。
4) fractional-N
分数分频
1.
It also features a fractional-N synthesizer with digital 2nd-order sigma-delta noise shaping,which can achieve a short lock time,a high frequency resolution,and an improved phase-noise spectrum.
采用分数分频技术,加速锁定过程并具有较小的输出频率间隔,利用Σ-Δ调制改善相位噪声性能。
2.
It also features a fractional-N synthesizer with digital 2 nd -order sigma-delta noise shaping, whi.
采用分数分频技术 ,具有较小的输出频率间隔 ,并利用Σ Δ调制改善相位噪声性能。
5) time-frequency division
分时分频
6) variable frequency divider
变频分频器
补充资料：分频
将较高频率变为其整数分之一低频率的方法。早期采用混频法，后又采用张弛振荡与被分频率同步法，还可用锁相法。在高频技术中，可用隧道二极管分频。常用二进制触发器分频法，利用反馈可实现任意分数的分频。分频所得信号可保留原信号的稳定度。
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