查询词典 dipole antenna

An ideal helix plasma antenna operating in the Ultra High Frequency band is studied in the paper.

提出了一种工作在超高频(Ultra High Frequency， UHF)的理想等离子体螺旋天线。

In addition to the major also provides logistics, highway toll collection and other aspects of ultra-high frequency reader, antenna, tags etc. equipment.

除此之外主要还提供物流、高速公路不停车收费等方面的超高频读写器、天线、标签等全套设备。

The influence of human body on the characteristics of Ultra Wideband antenna is also studied.

本论文完成的主要研究工作和创新性成果如下：1。

The ultrahigh frequency portable reader obviously improves the signal-to-noise ratio of RFID antenna for receiving signals, improves the reading and writing distance, reduces the influences of the environment on the signals and has the advantages of low cost and good effect, etc.

本发明显著改善了RFID天线接收信号的信噪比，提高了读写距离并减少了环境对信号的影响，具有成本低、效果好等优点。

Shelter accessories: shelter air conditioner, electromagnetic screen, EMC professional manufacturer, electromagnetic shielding chamber, shielded gate, shielded machine room, NMR shielding chamber, high-voltage partial discharge shielding, electromagnetic protection chamber, copper mesh shielding room, shielding cabinet, microwave unreflected chamber, filter, honeycomb air-vents window, satellite earth station antenna, communication electronics, information system; large-screen command and control system; ruggedized computer technology and equipment, computer information system safety products; dual-use radar system, weather radar, microwave device and RF and microwave components, dual-use electron component and cable, connector and sensor etc.

方舱附件：方舱空调、电磁屏蔽、EMC专业制造商、电磁屏蔽室、屏蔽门、屏蔽机房、核磁共振屏蔽室、高压局放屏蔽、电磁防护室、铜网屏蔽房、屏蔽柜、微波暗室、滤波器、通风波导窗、卫星地面站天线、通信电子、信息系统；大屏幕指挥与控制系统；加固计算机技术与设备、计算机信息系统安全产品；军民两用雷达系统、气象雷达、微波器件及射频微波产品、军民两用电子元器件及线缆、连接器、传感器等

It also can be placed through bracket upend, can save many spaces, add adjustable type antenna, make it looks more like some animal.

它也可通过支架竖直放置，能节省不少空间，加上可调节式天线，使它看起来更像某动物。

To analyze the multimode feed antennas, the integral equation of the antenna is solved by using a method of moment with vector triangle basis function.

为了分析多馈源天线，采用矢量三角形基函数的矩量法求解天线积分方程。

A CW carrier signal, generated by Agilent Signal Generator, is transmitted to the subject, which reflects the modulated waves to the receiver antenna. The Agilent Spectrum Analyzer, with an under-conversion module inside, demodulates the received signal to 70MHz IF signal, which is then sampled by a ADC module in Agilent Vector Signal Analyzer. Digital quadrature demodulation is used to convert IF signal to baseband. We could finally get the respiration and heartbeat signal by further analyzing the baseband signal.

该系统由信号发射器产生载波，通过天线发射到被测物体；频谱分析仪内置的下变频模块将由物体反射回来的信号下变频到70MHz中频；中频信号经矢量信号分析仪采样，然后经过数字正交解调变频到基带信号；对基带信号进行滤波、FFT等进一步的数字信号处理后即可获得探测的心跳和呼吸信号。

If you install outdoor antenna, tv's viewership effect will be better.

如果你安装室外天线，电视的收视效果会好些。

Hence, it is a very unique wave pattern and requires a very special type of antenna to pick it up.

因此，它是一个很独特的波形而需要一个特别型号的天线去接收它。

This immediately brings us to the next part of this article: creating an output "replace function".

下面进入文章的第二部分：建立一个"缓存处理函数"。

He was elected as an International Ornithological Committee member in 2002 during the 24th IOC held in Beijing.

现为中国鸟类学会理事和WPA 专家组成员。2002年被推选为国际鸟类委员会委员。