天线基础_1.ppt

天线基础 XiaogangWuxiawu 思科无线产品天线 FCCrequiresthatALLantennassoldbyaspreadspectrumvendorbecertifiedwiththeradiotheyaretobesoldwithAllCiscoAironet suppliedcables RFdevicesandantennashavereverseTNC RP TNC connectorsCiscoAironet suppliedantennasmeetallFCCrulesWidevarietyantennasformostapplications 天线概念 DirectionalityOmni 360degreecoverage directionalDirectional limitedrangeofcoverage GainMeasuredindBianddBd 0dBd 2 14dBi Moregainmeansmorecoverage incertaindirectionsPolarizationAntennasareusedintheverticalpolarization 天线增益 Inlifeyouneverget somethingfornothing thesameistrueinantennagain Ifthegainofanantennagoesup thecoverageareaoranglegoesdown Coverageareasorradiationpatternsaremeasuredindegrees Theseanglesarereferredtoasbeamwidth andhaveahorizontalandverticalmeasurement 天线理论 isotropic天线 Atheoreticalisotropicantennahasaperfect360degreeverticalandhorizontalbeamwidth ThisisareferenceforALLantennas 天线理论 Dipole Toobtainomni directionalgainfromanisotropicantenna theenergylobesare pushedin fromthetopandbottom andforcedoutinadoughnuttypepattern Thehigherthegain thesmallertheverticalbeamwidth andthelargerthehorizontallobeareaThisisthetypicaldipolepattern Gainofadipoleis2 14dBi 0dBd 高增益全向天线HighgainOmni Directionals Highgainomni directionalantennaswillcreatemorecoverageareainawayfromtheantenna buttheenergyleveldirectlybelowtheantennawillbecomelower Coverageheremaybepoor 定向天线DirectionalAntennas Fordirectionalantennasthelobesarepushedinacertaindirection causingtheenergytobecondensedinaparticulararea Verylittleenergyisinthebacksideofadirectionalantenna 常用2 4GAP天线 RP TNC接口 2 4G全向天线AIR ANT5959 2dBiIndoorDivers OmniCeilingAnt w RP TNCConnect LeftAntennaPatterns RightAntennaPatterns 2 4GhzOmni DirectionalAntennas 5 2dBiIndoorPillarMountDiversityCiscoAironetPart AIR ANT3213 2 4G定向天线AIR ANT2410Y R 10dBiIndoor outdoorWall MastMountYAGIYagiwithRP TNCConnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 2 4GhzOmni DirectionalAntennas 5 2dBiIndoorCeilingMountCiscoAironetPart AIR ANT1728 2 4Ghz全向天线AIR ANT4941 2 2dBiIndoorDipole StandardRubberDuck CiscoAironetPart AIR ANT4941 2 4G全向天线AIR ANT2422DW R 2 2dBiIndoorWhiteDipoleAntennaw RP TNCConnect AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 2 4G定向天线AIR ANT2485P R 8 5dBiIndoor outdoorWallMountPatchAntennaw RP TNCConnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 2 4G定向天线AIR ANT2460P R 6dBiIndoor outdoorWallMountDirectionalPatchAntennaw RP TNCConnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 2 4G定向天线AIR ANT2465P R 6 5dBiIndoor outdoorWallMountDiversityPatchAntennaw RP TNCConnectors LeftAntennaPatterns RightAntennaPatterns 常用5GAP天线 RP TNC接口 5G全向天线AIR ANT5135D R 3 5IndoordBiDipoleomnidirectionalcoverageBlackDipoleAntennaw RP TNCconnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5G全向天线AIR ANT5135DW R 3 5dBiIndoorDipoleomnidirectionalcoverageWhiteDipoleAntennaw RP TNCConnect AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5G全向天线AIR ANT5145V R 4 5dBiIndoorDiversityOmnidirectionalDiversityOmniw RP TNCconnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5G全向天线AIR ANT5160V R 6dBiIndoor outdoorOmnidirectionalOmniAntennaw RP TNCconnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5G定向天线AIR ANT5170P R 7 0dBiDiversityIndoor outdoorPatchWallMountDiversityPatchAntennaw RP TNCconnectors AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5G定向天线AIR ANT5195P R 9 5dBiIndoor outdoorPatchWallorArticulatingMastMountPatchAntennaw RP TNCconnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 常用2 4G和5G 5 8GAP和网桥天线 N接口 5G全向天线AIR ANT5175V N 7 5dBioutdoorOmnidirectionalOmniwithNConnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 2 4G全向天线AIR ANT2455V N 5 5dBioutdoorOmnidirectionalOmniAnt withNConnect AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5 8G全向天线AIR ANT58G9VOA N 9dBioutdoorMASTMountOmnidirectionalOmniAntennawithNconnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5 8G定向天线AIR ANT58G10SSA N 9 5outdoordBiMastMountSectorMastMountSectorwithNconnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 5 8G定向天线AIR ANT58G28SDA N 28dBioutdoorMastMountDish 5 8GHzDishAntennawithNconnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 常用2 4G网桥天线 RP TNC接口 2 4GhzOmni DirectionalAntennas 5 2dBiOutdoorMastMountVerticalCiscoAironetPart AIR ANT2506 2 4G全向天线AIR ANT24120 12dBioutdoorMastMountOmnidirectionalOmniMastMt Antennaw RP TNCConnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 2 4G定向天线AIR ANT2414S R 14dBioutdoorMastMountSectorSectorAntennaw RP TNCConnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern 2 4GhzDirectionalAntennas 13 5dBioutdoorYagiAntenna 25degreeCiscoAironetPart AIR ANT1949 AIR ANT3338 21dBioutdoorMastMountParabolicDishSolidDishAntennaw RP TNCConnector AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern AP和网桥内置天线 Aironet1310内置2 4G定向天线 13dBi2x2PatchArray AzimuthPlaneRadiationPattern ElevationPlaneRadiationPattern CISCOAIRONET1130SERIESINTEGRATEDANTENNA CISCOAIRONET1000SERIESINTEGRATEDANTENNA 网络资源 CiscoAironetAntennaReferenceGuide 2 4GhzOmni DirectionalAntennas 2 2dBiCeilingMountCiscoAironetPart AIR ANT3194 2 4GhzDirectionalAntennas 8 5dBiPatchAntenna 55degreeCiscoAironetPart AIR ANT3549 HPlaneEPlane 2 4GhzOmni DirectionalAntennas 5 2dBiGroundPla