1、哈爾濱工業(yè)大學碩士學位論文彈載GPS環(huán)帶天線的研究姓名：鐘玲玲申請學位級別：碩士專業(yè)：電磁場與微波技術(shù)指導(dǎo)教師：邱景輝20050601哈爾濱下業(yè)大學工學碩士學位論文AbstractThereceiverofGlobalPositioningSystem(GPS)isextensively叩pliedtofieldofnavigatingmeasuringandsoon.GPSreceiverismadeupoftheunitofthea

2、ntennaandunitofreceiving.Inthispapertheunitofantennaismainlyresearched.AntennaunitofGPSisusedtoreceivethesignalofsatellitessoitmustmeetthespecialspecificationrequirement.ForreceivingallGPSsatellitesignaltheradiationofGPS

3、antennashouldbehemisphereinthetophalfspace.Thisconditionhasexertedthestrictrestrictionforthedesignoftheantenna.MeanwhilecircularpolarizationandworkinginspecificGPSfrequencyisrequired.Moreoverbecausethesignalofsatellitest

4、hatantennareceivesisveryfaintimpedancematchingisalsoaveryimportantrespect.Particularlywhatweresearchhereiscylindricalconformalantennausedformissile.Forthehighspeedwhirlingcylindricalcarrierastheguidedmissileitsrequestfor

5、antennaistoproducetheisotropicradiationpatternintheplanewhichisperpendiculartotheaxisofmissileapproximatelybutintheplanewhichincludestheaxisofmissiletheradiationpatternshouldbeoferedasthehemispherebeam.Inactualapplicatio

6、nastocylindricalconformalantennathemostimportantistherelationbetweencylinderradiusandthesizeoftheantennathatistosaywhatkindofradiustermswithwhatkindofantenna.Forthesepurposediferentkindsofcylindricalconformalantennasshou

7、ldbeadoptedfordiferentdiameterofcylinderseparately.Whenthediameterofcylinderisgreaterthanthewavelengththecircleantennaarraycomposedofseveralantennascanbeadopted.Thisisthekeycontentofthispaper.Thiskindofantennaarraycanrad

8、iateanomnidirectionalpatternnormaltotheaxisofthemetalcylinderapproximatelyandmeetcertaingainrequirement.Themethodofanalysisandsynthesisiscombinedtooptimizetheshapeandarrangewayoftheantennaasaresulttomakeithavegoodperform

9、anceinthecourseofrealizingtheconversionofthecircuitandelectricmagneticfieldenergy.Becauseofitsincomparableadvantageofantennawithotherformstheelementofthearraywechoseniscircularpolarizedmicrostripantenna.Inthispaperthecla