文档介绍：实验六电磁波极化实验六、电磁波极化一、实验目的:1、研究线极化波,圆极化波和椭圆极化波的产生和各自的特点。2、学****线极化波,圆极化波和椭圆极化波特性参数的测量方法。二、实验仪器:1、DH926A型电磁波综合测试仪。2、DH1211型3cm固态信号源。3、水平、垂直金属丝栅。三、实验原理:平面电磁波的极化是指电磁波传播时,空间某点电场强度矢量E随时间变E的末端总在一条直线上周期性变化,称为线极化波;若E末端化的规律。若的轨迹是圆(或椭圆),称为圆(或椭圆)极化波。若圆运动轨迹与波的传播方向符合右手(或左手)螺旋规则时,则称为右旋(或左旋)圆极化波。线极化波、圆极化波和椭圆极化波都可由两个同频率的正交线极化波组合而成。设同频率的两个正交线极化波为:(1)(2)1、线极化波的合成当,的位相相同时,即,合成电场为:合成电场的大小:(3)eptancespecificationfor5GB50275-pressor,eptancespecificationforlifting6HG20201-2000constructioninstallationengineeringconstructionstandard7,HG...Pressuregauges,usinganinstalledsparkarrestorforacetylenecylinders,illegalcarrying,usinggascylinders,,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningandprovisionalprotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)ordancewiththeprovisions,onthejobunitfined300yuan,(1)injuriesfatalitiesdirectlypunished1~,suchasconcerningadministrativesanctions,panyortherelevantDepartment.(2)urred,-10,000yuan,identandtheresponsibilityofleadership,pany.(3)urs,thedirectpunishment500-1000,identresponsibility,givenoticeofcriticismand50-100economicsanctionsagainstthem.(4)ident,reportedwithoutunduedelayorfalse,toinformthe合成电场的方向:(4)由(3),(4)式可以看出,合成电场的大小随时间作周期性变化,但方向不变,始终在一条直线上,合成为线极化波,如图1所示。2、圆极化波的合成(1)式和(2)式中,当,位相相差时两式平方相加可得(5)合成电场的方向:(6)panyortherelevantDepartment.(2)urred,,suchasconcerningadministrativesanctions,(1)injuriesfatalitiesdirectlypunished1~,onthejobunitfined300yuan,theunitwillchargeafineof100noperotectivemeasureshavebeentaken,theresponsibleunitfined200Yuan,constructionpersoninchargeafineof50Yuan.(8)tthehotsunexposuremeasures,responsibilitiesofteamafineof50Yuan.(7)atheightandtheopeningand