射频

With the busywork environment and the function and the configuration and the using performance and the electrical system of milling machine analyzed, the demand and object of remote control system put forward.

中文摘要：本文通过对铣刨机的作业环境、功能、结构、使用性能及电液系统的分析，提出了遥控系统的技术要求与控制目标。通过对元器件性能、时频分制、编码方式、射频体制的分析比较和评价，确定了本遥控系统的最佳方案。

Some improvements are performed on the capacitive coupling probe to increase its frequency range. In this case, it could measure the D. C. volts and RF volts respectively.

针对原有容性探针存在的问题，增宽了新研制的容性探针的频响范围，改进后的容性探针能同时测量直流电位和射频电位。

There are two classes of flow velocity estimation methods: Doppler frequency shift based methods and velocity—time delay based methods.

基于超声射频的血流运动估计方法主要有两大类：基于多普勒频移的流速估计方法和基于速度—时移的非多普勒方法。

In this paper, a kind of 300MHz frequency source is designed by means of combining DDS with analog frequency doubler.

本文提出了一种DDS和模拟倍频器相结合的方法，用来产生300MHz核磁共振实验所需要的射频频率。

TSV has been in large shipment in image sensor and MEMS field, and it will rapidly expand to memory field in the future, and to DSP, RF IC, cell phone baseband, processor, CPU and GPU in 2013. Furthermore, TSV market size will rise to over US$2 billion from less than US$ 300 million currently, which will be the rapidest growing field in semiconductor industry.

在图像传感器、MEMS领域TSV已经大量出货，未来将快速扩展到内存领域，2013年会扩展到DSP、射频IC、手机基频、应用处理器、CPU和GPU领域。2013年，TSV市场规模将从目前的不足3亿美元扩展到20亿美元以上，是半导体产业发展速度最快的领域。

And in the chapterⅢ,we locked the laser to the hyperfine transition of atoms with super-stability by the means of RF-modulated saturated absorption.

第三章中，通过射频调制的饱和吸收稳频方法，使激光器的频率锁定到十分稳定的原子的超精细跃迁线上。

Based on the interference characteristic, the sidelobe cancellation in time is presented and the procedure is designed, which achieves good results that the detection distances of OSMAR is increased by over 40km. At last the dissertation summarizes the application of beamforming in HFSWR, its effect and defects. 5 The dissertation discusses the application of orthogonal expansion method in HFSWR. At first, the traditional OE algorithm is introduced, and the output form is concluded. Then the dissertation discusses the influence of OE method on target signal.

首先介绍了阵列天线的方向图，接着阐述了波束形成的基本原理，然后引入了自适应波束的概念，讨论了确定权函数的准则，介绍了自适应波束形成在高频地波探海雷达中的应用和兼顾目标信号的波束形成；重点介绍了自适应旁瓣对消的原理和权系数计算方法，结合高频地波探海雷达数据特点，设计了在频域用旁瓣对消法消除射频干扰的处理过程，给出了处理结果，并对其效果进行分析，进而提出在时域进行分段旁瓣对消的新方法，设计了处理流程和计算方法，然后给出处理结果，该方法能提高OSMAR探测距离40km以上。

Due to its excellent performance,the prescaler could be applied to many RF systems.

由于其具有良好的性能，该分频器可应用于许多射频系统中。

Since the superheterodyne receiver was invented, mixer has long been the research focus in communication and radio frequency circuit fields, which is the key component to realize the frequency translation.

自从超外差接收机的结构被提出以后，混频器作为其中实现频率搬移的关键部件一直都是通信和射频电路研究的热点。

A more detail research of antenna switch module has been described the system is consists of diplexer, RF switches, and low pass filters.

分频器提到它的设计方法， SPDT和SP3T两种射频开关电路主要指出了其传送回路插入损失的影响因素，而省略型式的滤波器的被选择是由於它的简易电路结构。

Plunder melds and run with this jewel!

掠夺melds和运行与此宝石！

My dream is to be a crazy growing tree and extend at the edge between the city and the forest.

此刻，也许正是在通往天国的路上，我体验着这白色的晕旋。