天线

Antenna measurement has always been a key topic in the field of antennas.

天线测量一直是天线研制领域内的一个关键课题。

Deman is one of the biggest Chinese mobile TV antenna solution provider and manufacturer so far. The company develops, designs and manufactures antennas for all types of portable and fixed wireless devices.

德门电子有限公司是成立于2006年的中韩合资高新技术企业，主要从事移动终端所用天线类产品的研发、设计和制造，是目前国内最大的手机电视天线解决方案提供商和制造商之一。

The 〓 results show that arrays of unequal dipoles may be very 〓 in the design of antenna array systems.

本论文中还讨论了由不相同的天线单元组成的天线阵的综合问题，得到的结果是令人惊异的。

Vertical radiation diagram of Inverted Amos antenna with different number of 3, 5, 7, and 9 dipoles.

图 12： 3，5，7，9 振子反转阿摩司天线垂直方向图 9 July，2009 反转阿摩司天线 Fig。

The mutual coupling in adaptive array's is studied with emphasis on the array composed of dipoles.

本文研究了自适应阵列天线的互耦问题，重点分析了半波振子单元组成的自适应阵列天线的互耦问题。

A duplexer separates an RF signal received from the built-in dual band antenna from an RF signal to be transmitted to the built-in dual band antenna.

双工器分离从内置双频带天线接收的无线电频率信号和要发送到内置双频带天线的RF信号。

SCR-521. The most significant improvement in the ASE was the use of an antenna duplexer, which permitted the use of just one send-receive antenna, rather than two separate units.

ASE上最重大的改进的使用了天线双工机，使得可以只使用一个收发天线而不是两个，这使飞行时的风阻明显减少，飞行性能得到显著的提高。

Tofind a target and determine its position,any radar station has to basically consist of a transmitter,a receiver,an antenna,an antenna duplexer,a display and a timer.

为了要发现目标和确定其位置，任何雷达站基本上都必须包括发射机、接收机、天线、天线转换开关、显示器和定时装置。

A controller processes the RF signals received at and transmitted from the duplexer and controls the whip antenna driver to extend the whip antenna in a speech state or upon a call attempt from a user.

控制器处理从双工器接收的RF信号和发送到双工器的RF信号，控制拉杆天线驱动器，以便在谈话状态下或一旦用户尝试呼叫时，伸出拉杆天线。

SCR-521. The most significant improvement in the ASE was the useof an antenna duplexer, which permitted the use of just one send-receive antenna, rather than two separate units.This yielded appreciable improvement in aircraft performance because of drastically reduced wind drag.

ASE上最重大的改进的使用了天线双工机，使得可以只使用一个收发天线而不是两个，这使飞行时的风阻明显减少，飞行性能得到显著的提高。

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。