英语翻译The electric field patterns of a square patch antennawere shown in Fig.2.The patterns were considered tobe constant along W and varied sinusoidal with L.Adesign of the broadband dual-polarized microstripantennas is proposed by using the i

来源:学生作业帮助网 编辑:六六作业网 时间:2024/12/19 02:41:42
英语翻译TheelectricfieldpatternsofasquarepatchantennawereshowninFig.2.Thepatternswereconsideredtobeconst

英语翻译The electric field patterns of a square patch antennawere shown in Fig.2.The patterns were considered tobe constant along W and varied sinusoidal with L.Adesign of the broadband dual-polarized microstripantennas is proposed by using the i
英语翻译
The electric field patterns of a square patch antenna
were shown in Fig.2.The patterns were considered to
be constant along W and varied sinusoidal with L.A
design of the broadband dual-polarized microstrip
antennas is proposed by using the inset feed technique.
In most applications,the requirement of
propagation can be met with a single patch structure.
However,in some cases,sharp beamwidth was
required,as well as maintaining a low profile structure,
which arise the development of microstrip patch array
antennas.The microstrip patch array antennas offers
three excellent advantages relative to other types of
antennas [5]-[7]; low weight,low profile with
conformability and low manufacturing cost.
Several common patterns of microstrip patch
array antennas are series,parallel or corporate and
hybrid series/parallel feeds [8].Both design of array
antennas in this paper were connected using parallel
feed quarter-wave transformer impedance matching
technique.
2.Design Procedure
A prototype antenna is then designed,and
experimental results are presented.There were several
ways to design microstrip antennas such as
transmission line,cavity and full wave models [19].
For simplicity purpose,transmission line model was
used in this project.
Dimensions of the antenna are depending on the
operating frequency and dielectric constant of the
substrate [20].The parametric study on the single
patch antenna is done first to understand the
characteristics of the antenna.Fig.3 showed the
dimension of the 45º patch antenna was simulated
using Microwave Office 2006.Fig.4 has shown the
dimension of -45 single patch antennas.The length,

英语翻译The electric field patterns of a square patch antennawere shown in Fig.2.The patterns were considered tobe constant along W and varied sinusoidal with L.Adesign of the broadband dual-polarized microstripantennas is proposed by using the i
图2所示为一只方片天线的电场图.认为该图沿着W向不变,随着L向正弦变化.本文提出了一种用嵌入馈电技术设计的宽带双极化微带天线.在大多数应用中,单片结构天线可以满足传播的需求.然而,在某些情况下,需要窄束宽和外形轮廓结构很小时,需要发展微带片式阵列天线.相对于其他类型的天线,微带贴片阵列天线有三个优点[5] - [7],重量轻,姿态舒适不引人注目,制造成本低.微带贴片阵列天线的几种常见的模式是串联,并联或串/并馈电共同混合使用[8].本文提出了用并行馈电方波1/4波长变压器阻抗匹配技术连接的这两种天线阵列的设计.
2.设计步骤
本文发布了天线原型机的设计和实验结果.有几种方法来设计微带天线,例如传输线,腔和全波模型[19].为简化设计,本项目用的是传输线模型.天线的尺寸取决于工作频率和基片的介电常数[20].为了理解天线的特性,首先要做单片天线的参数研究.图3所示为用Microwave Office 2006模拟的45o 单片式天线的尺寸.图4所示为-45o 单片式天线的尺寸.
长度

电场的正方形贴片天线
图二显示了。这个模式被认为
被不断沿着和不同的正弦与l . W
设计的宽带dual-polarized微带
提出了利用天线插图饲料技术。
在大多数应用程序,要求
传播能遇到一位单身补丁的结构。
然而,在某些情况下,锋利的宽度
要求,以及保持低调的结构,
发展所带来的微带...

全部展开

电场的正方形贴片天线
图二显示了。这个模式被认为
被不断沿着和不同的正弦与l . W
设计的宽带dual-polarized微带
提出了利用天线插图饲料技术。
在大多数应用程序,要求
传播能遇到一位单身补丁的结构。
然而,在某些情况下,锋利的宽度
要求,以及保持低调的结构,
发展所带来的微带阵列的补丁吗
天线。该补丁阵列天线提供
三个出色的相对于其它类型的
天线[5],[7],重量轻,低调
一致性和低生产成本。
常见的几种模式的微带补丁
阵列天线是系列、平行或公司
混合方式喂养[8]。设计的数组
在这篇文章中,天线进行连接使用平行
喂quarter-wave变压器阻抗匹配
技术。


2。程序设计,

一个原型天线进行设计,
最后给出实验结果。有几个
方法对微带天线的设计等
传输线,腔和波模型(19)。
为了简单的目的、输电线路的模型
在这个项目中使用。
该天线尺寸的依靠
操作频率和介电常数的
(二)。基质在单一的参数研究
先做补丁天线的理解
天线的特点。图3显示了
45º贴片天线尺寸进行了模拟
2006年,采用微波办公室。图4显示了
-45单一尺寸设计。这个长度,

收起

英语翻译:The current projected along the electric field. tales of the electric 英语翻译The FIE(国际剑联) will sign a contract with the Contest Winner for the delivery of no less than one thousand sets of the single piste Wireless system貌似不太正确哦 英语翻译The great importance of transportation suggests passenger transportation as another approach.The fact simply is that tourism is so vast,so complex,and so multifaceted that it is necessary to have a number of approaches to studying the fie 英语翻译The utility model relates to an enclosed electric stove with electric heating tube which is characterized in that a semicircle sectional discoid spiral electric heating tube is used as a heat source.The heating wire is completely enclosed 英语翻译电加热器方面的问题Please find more description for the electrical heater.The electric heaters specified are:Electric Unit Heaters (Heavy duty Cabinet type heaters with fan,motor ,electric heating element and directional lovers) s electric electric electric electric 英语翻译机械相关,还有electric lower controls 英语翻译natural born electric killer 可以么 英语翻译Electric TractionIt is generally held that the most efficient method of railway operation,and ultimately the most economical,given a reasonably cheap electricity supply,is with electricity as the motive power.The electric locomotive is no 英语翻译1 Which is a vector quantity?(1) electric charge(2) electric field strength(3) electric potential difference(4) electric resistance5 A machine launches a tennis ball at an angle of25° above the horizontal at a speed of 14 metersper secon 英语翻译The steel used shall be produced by the electric process or by an oxygen-blown process.electric process 和 oxygen-blown process.指什么呢?The steel should be fully killed.这个怎么理解? Who ____ the electric lights?(invent) 英语翻译The 2014 Chevrolet Spark,2014 Ford Focus Electric and 2013 Mitsubishi i-MiEV have been determined to have a range of 131.9 kilometers,122.3 kilometers and 99.7 kilometers,respectively,while BMW's i3 urban electric car,with range extender 改错She doesn't like playing tennis ,too I cost fie hundred yuan on the new dress