射频源

Thus, user does not know quantity of electricity of battery.

在目前的有源射频识别系统中，随着使用时间的延长，电池的电量下降，使得自动识别系统的作用距离下降。

In present active radio frequency recognition system, as horary extension in usage, quantity of electricity of battery is dropped so as to make operating distance reduced.

本发明是一种对有源射频识别系统中标签卡电池电量进行识别和充电的方法。

The design of a passive ultra high frequency RFID transponder chip is researched in this dissertation.

本论文重点研究了无源超高频射频识别标签芯片设计。

Planar spiral inductor is the most important passive component of CMOS RF integrated circuit design.

平面螺旋电感是射频电路设计中最重要的无源元件。

Q1 is the active device. the antenna is capacitively coupled to L1. L3/VC1 forms the tunned circuit (to the 40meter band, SW). and the RF signal is fed to Q1's gate.

Q1是有源器件，信号经过L1耦合到L3/VC1的调谐电路中（40米波段，SW），射频信号输入到Q1的门极。

Shangyu haoxiang communication technology co.,ltd is tries research and develop the production sale microwave radio frequency passive companent's specialized company,the main product including the merit minute coupler electric bridge load attentuater filter diplexer mixer and so on,this company produces with the debugging uses the advanced HP/agilent vector network analyzer,the company has many kinds of high low temperatures,the shake table,test spare parts and the product and so on salt-fog test box reliability equipment.

上虞豪祥通讯科技有限公司着力研发生产销售微波射频无源器件的专业公司，主要产品包括功分器，耦合器，电桥，负载，衰减器，滤波器，双工器，合路器等，本公司生产和调试都采用先进的HP/Agilent矢量网络分析仪，公司拥有多种高低温，震动台，盐雾试验箱等测试零部件和产品的可靠度的设备。

The self-heating effect in power GaAs MESFETs is significant, but it is seldom discussed in detail in other models.

此外，各个电荷源的总电荷量为零，确保了模型在直流条件与射频条件下的一致性。

These frequency synthesizers provide the moving of the basic signal generating modules to radio frequency with stable inspiring source.

它是对输出时钟信号的相位噪声特性，杂散抑制特性等要求都很高的一种频率合成器，为基本信号生成模块到射频的搬移提供稳定的激励源。

However, as the name（read－only memory）implies, CD disks cannot be written onorchanged in any way.

然而，正如其名字所指出的那样，CD盘不能写，也不能用任何方式改变其内容。

Galvanizes steel pallet is mainly export which suits standard packing of European Union, the North America. galvanizes steel pallet is suitable to heavy rack. Pallet surface can design plate type, corrugated and the gap form, satisfies the different requirements.

镀锌钢托盘多用于出口，替代木托盘，免薰蒸，符合欧盟、北美各国对出口货物包装材料的法令要求；喷涂钢托盘适用于重载上货架之用，托盘表面根据需要制作成平板状、波纹状及间隔形式，满足不同的使用要求。