射频

Because of the rapid development of the wireless communication technology, the design and research of the integrated circuits in the related field has gained more and more attention in recent years. And with the advance of the IC process technology, the cutoff frequency of MOS devices can reach several giga herz or more. It is a trend that CMOS process will replace the III-V compound process such as gallium arsenide or silicon bipolar process which were dominant in the fields of radio frequency and microwave.

近年来，由于无线通信技术的飞速发展，相关领域的集成电路的设计研究也受到越来越多的关注；同时由于工艺技术的不断进步，MOS器件的特征频率也可以达到几个GHz或更高的水平，原来在射频、微波领域占主导地位的三五族化合物半导体工艺如砷化镓及硅双极型工艺也有逐渐被CMOS工艺所取代的趋势。

Objective:To evaluate the safety and efficacy of combining radiofrequency ablation with arsenious acid locally to treat liver VX2 tumor in rabbits,and to explore its mechanism.

目的：探讨射频消融联合亚砷酸局部治疗对兔肝VX2肿瘤的有效性和安全性，并探讨其机制。

Simulant attenuator has been widely applied in microwave and radio networks with MMICS and PIN diode networks.

模拟衰减器在射频和微波网络中有广泛的应用，可用砷化镓MMICS和PIN二极管网络实现。

Frequency range from audio, video, radio frequency to the microwave band.

频率范围由音频、视频、射频到微波波段。

The radio-frequency identification technique RFID is gradually applied in the industry autoimmunization, the commerce autoimmunization, the traffic management, the fake preventing and even in the military affairs.

射频识别技术RFID正逐渐被广泛应用于工业自动化、商业自动化、交运管理、防伪等众多领域，甚至在军事中也开始应用。

Key word : Power amplifier, impedance matching, broad band amplifier, smith chart, radio frequency

结果表明，设计出的射频功率放大器符合设计参数要求，具有良好的性能。

This project is a computer monitoring system designed for Personnel TrackingSystem based-on Radio Frequency Identification in mine.

本课题是为基于射频识别的煤矿井下人员跟踪系统开发的一套计算机监控系统。

uses the radio frequency below nose endoscope hemostatic, can make clear each bazoo path and nose top reach the effect to concealment the haemorrhage of place, effective and hemostatic.

结论采用鼻内窥镜下射频止血，能明确各鼻道及鼻顶等及效果隐蔽部位的出血，有效止血。

In chapter 5, the design of oscillator is discussed. First introduced the condition of how to make circuit oscillate and keep stabilization. And compared the advantage and shortcoming of design oscillator with S parameter or Bessel Function method.

第五章主要是讨论了射频前端关键模块本振源振荡器的设计，分析了反馈振荡器的起振、平衡条件，比较了用晶体管S参数和时域贝塞尔函数法设计振荡器的优缺点，最后以科尔皮兹型振荡器为例用ADS软件进行设计仿真，给出了设计结果。

The selectable scheme of biconditional marker is the attached nut of rail clamp or RFID tag and so on.

二值标记采用附加的扣件螺母或射频电子标签等方式实现。

Finally, according to market conditions and market products this article paper analyzes the trends in the development of camera technology, and designs a color night vision camera.

最后根据市场情况和市面上产品的情况分析了摄像机技术的发展趋势，并设计了一款彩色夜视摄像机。

Only person height weeds and the fierce looks stone idles were there.

只有半人深的荒草和龇牙咧嘴的神像。