查询词典 modulator

It adopts a fractional-N PLL synthesizer to realize the FM modulator.An extra offset current has also been applied to eliminate the effects of the mismatch in CP.

该调制器基于小数分频锁相环技术，并在电荷泵单元中引入额外偏差电流消除电荷泵失配对带内噪声的影响。

The modulator (25) may also include an offset circuit (24) so that the modulated waveform includes a carrier frequency indicator.

所述调制器(25)还可以包括偏置电路(24)，使得调制波形包括载频指示符。

Characterization of filter spatial light modulator in optical correlator［J］.

在光学相关器中测试滤波空间光调制器的相位调制特性［J］。

The cutoff conditions of metal-clad waveguides or loss dielectric waveguides are discussed. The effects of metal-cladding on the cutoff condition of graded index waveguides are analyzed at first. The principle of cutoff intensity modulator has discussed in detail.

本文首次提出一种适合于分析含金属覆盖层的均匀和渐变介质波导在截止点附近的光学特性的近似的解析方法，并对金属覆盖层的均匀阶跃介质波导在截止点附近的模传播特性作了全面的分析，所得到的结果同精确的数值解结果相吻合。

And, the α parameters of frequency chirping of the cutoff intensity modulator are given at first. The cutoff conditions of metal-clad strip or rib waveguides are analyzed by modifying dual effective index method and simple effective index method, respectively.

在理论上，详细论述了截止型强度调制器的工作机理，结合耦合模理论，用近似方法对截止型强度调制器的调制特性进行理论模拟，模拟结果与实验结果的变化规律基本相符合；并首次给出截止型单波导强度调制器频率啁啾α因子的模拟结果。

Their mesogenic temperature ranges cover from 78 to 110 degrees. The milting points of compound 19a and 19b are 43.9 ℃ and 74.8 ℃ respectively while their clearing temperatures are 92 ℃ and 112 ℃. Their mesogenic temperature ranges cover from 36 to 57 degrees. They are suitable for formulating eutectic mixture and for the applications in PDLC, reflective liquid crystal display, and IR modulator.

第三系列同样以2，3-邻二氟苯二炔基二苯基为主体，但相对碳链长度和前一系列相反，将邻二氟苯二炔基端的碳数固定为6，二苯基端碳数分别为2与3，合成出向列型液晶化合物19a与19b，观察到熔点与澄清点温度均较前一系列化合物低，熔点温度下降约20~30oC，澄清点温度下降约50~70 oC，液晶相温度范围约36~57 oC之间，期望能应用在PDLC，反射式液晶显示器，及红外光调节器上。

In the early days of FM, there were no varactor diodes so it was difficult, at best, to produce a direct FM modulator.

在早期进行调频FM时，还没有变容二极管，那时很难生产出一个直接FM调制器。

In this approach, the optical Mach-Zehnder intensity modulator is biased to suppress the odd-order optical sidebands, the fiber laser operates in the second-order rational harmonic mode, and a fiber Bragg grating notch filter is used to block the optical carrier.

这种方法的原理是：调节强度调制器的偏置使其抑制奇数阶谐波的产生，同时使激光器工作在二阶有理数锁模状态，最后用一个光纤光栅消除载波。

Some new display modes stire up people's research interest greatly, which have appeared recently in liquid crystal. The research of ferroelectric liquid crystal spacial light modulator got great breakthrough. Some performace index had greatly been improved and be closed to the standard of optical calculation and application.

近年来，液晶显示领域有出现许多新的显示模式，极大的激发了人们的研究兴趣；铁电液晶空间光调制器的研究取得了很大的突破，某些性能指标有了较大提高已接近光计算等及其应用的水平。

The digital part includes rectangular-to-polar converter and digital phase modulator.

数位部份包括直角座标至极座标转换器及数位相位调变器。

Yet, Edith says, there was always money in the bank.

但是Edith说，她的银行户口里面总是有钱。

We have created a series of files that resolve this problem--one for each day of the 40 days of purpose.

我们制作一系列的档案去解决这问题---一个为标竿40天中的每一天。