天线

Multi-antenna technique is an effective means of improving performance of the downlink transmission.

摘要多天线技术是提高下行发射性能的一种有效方法。

After compensation of continuous motion of the platform and time difference between upslope and downslope signals for imaging, the moving target can be detected through displaced phase center antenna technology.

提出了一种利用三角波调制调频连续波进行地面高速运动目标检测的新方法，根据三角波调制调频连续波正、负调频导致动目标成像结果在径向反向移动的特点，通过对正、负调频信号分别成像，在补偿了载机平台的连续运动以及正、负调频信号之间的时间差对图像的影响后，将两幅图像通过偏置相位中心天线处理，检测出高速动目标。

We specialize in booster cable,working lamp,examination and repair light,spotlight,car decorative antenna,jump start,auto emergency kit,storage battery clip,emergency wire,cable clip,electric winch,auto dragger and other such auto accessorial product.

专业生产汽车电瓶夹、工作灯、检修灯、聚光灯、装饰天线、应急电源、汽车应急包、电瓶夹、急救线、电缆夹、电动绞盘、汽车牵引机等等汽车周边产品。

With the electromagnetism theory and the characteristic of the well-drilling equipment,the paper brings forward the engineering technique of using drill stem as antenna in the telemeteing system of well-drilling.

此类系统大多是利用电磁波来传递信息的测试系统。发射电磁波的天线的形式和尺寸的选择，很大程度上决定了该系统的技术优势和整体成本。

You need to connect to your DSL line an Access Point, to place the antenna on a window.

你需要一个连接到你的DSL线接入点，把天线一窗口。

In this thesis, cascaded electromagnetic band-gap structure is presented to broaden the bandwidth or achieve dual band operation.

紧致型电磁带隙结构本身具有窄带特性，这种带宽瓶颈使其应用大多局限于窄带天线或器件上。

ABSTRACT With fast development of wireless communication, especially mobile communication, these requirements for antenna are rising. These requirements include smaller size, multi-frequency operation, dual band, tri-band and quad-band.

随着无线通信的飞速发展，尤其是移动通信的发展，对天线提出了越来越高的要求，尺寸越来越小，多频工作，双频，三频甚至四频。

A substrate on which a high-frequency circuit and an earth plate are mounted and an antenna system is built in the housing of a portable radio device.

便携式无线电设备的外壳中，设置了基板和天线系统，该基板上安装了高频电路和接地导板。

Such a gigantic antenna could be used to generate the gigantic stationary wave around the Earth.

这样一个巨大的天线可以被用来产生巨大的平稳波环绕地球。

Antenna effective area is usually expressed in square meters.

天线有效面积的单位是平方米。

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。