a small wideband microstrip-fed monopole antenna

simon2000

【文件名】:08619@52RD_a small wideband microstrip-fed monopole antenna.pdf
【格　式】:pdf
【大　小】:201K
【简　介】:
【目　录】:I.INTRODUCTION
OWADAYS,wirelesscommunicationsystemsarebe
comingincreasinglypopular.However,thetechnologie
N
forwirelesscommunicationstillneedtobeimprovedfurthert
satisfythehigherresolutionanddataraterequirements.Thati
whyultrawideband(UWB)communicationsystemscoverin
from3.1GHzto10.6GHzreleasedbytheFCCin2002[1]ar
currentlyunderdevelopment.Formanyyears,variousantenna
forwidebandoperationhavebeenstudiedforcommunication
andradarsystems[2],[3].Thedesignofwidebandantenn
isverydif?culttaskespeciallyforhand-heldterminalsinc
thecompromisebetweensize,cost,andsimplicityhastob
achieved.InUWBcommunicationsystems,oneofkeyissue
isthedesignofacompactantennawhileprovidingwideban
characteristicoverthewholeoperatingband.Duetothei
appealingfeaturesofwidebandwidth,simplestructure,omni
directionalradiationpattern,andeaseofconstructionsevera
widebandmonopolecon?gurations,suchascircular,square
elliptical,pentagonal,andhexagonalhavebeenproposedfo
UWBapplications[4](R)C[6].However,theyarenotsuitablef
integrationwithprintedcircuitboardssincetheydonothav
planarstructures.Thus,amicrostrip-fedmonopoleantenn
issuitablecandidateforintegrationwithhand-heldtermina
owingtoitsattractivefeaturessuchaslowpro?le,lowcos
andlightweight.