Cisco Systems ExternalAntennaDeployments

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CiscoAironetAccessPointDeploymentGuide 
CiscoSystems
Copyright©2012CiscoSystems,Inc.Allrightsreserved.
Page35of52
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ExternalAntennaDeployments
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AllCiscoantennaconnectorsarelabeledA,B,C,andsoon.AhasahigherprioritythanB,C,orD;
therefore,iftheaccesspointsupportssaythreeorfourantennasandyouonlyhavetwoantennas,use
portsAandBuntilyoucouldinstalltheadditionalantennas.
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Itispossibletosupport802.11a/b/gclientsorsinglespatialstreamNclientswithonlyoneortwo
antennas.Ciscodoesnotrecommendthisbecausethereisasignificantdegradationofperformance,
andClientLinkfunctionalityislost.Ifyouchoosetousefewerantennas,configuretheaccesspointin
softwaretonotusetheotherantennas.
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Note:Theentry‐levelAP1600hasthreeantennaportsthatarenotconfigurable.TheAP2600/3600has
fourconfigurableantennaports,withoneextratransceiver(receiver/transmitter)perband.
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MIMOs(dual‐radiatingelementantennas)include:
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AIR‐ANT2524V4C‐R–Dual‐bandomnidirectional–2/4dBiceilingmountomniuse
AIR‐ANT2544V4M‐R–Dual‐bandomnidirectional–4/4dBiwallmountomniuse
AIR‐ANT2566P4W‐R–Dualbanddirectional–6dBipatchwallmountuse
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ForMIMOs,itisnotcriticalwhichantennaleadgoesintowhichantennaportontheaccesspoint,as
longasalltheantennaportsontheAPareconnectedtothe��antennas.ThepatchantennaAIR‐
ANT2566P4W‐Rhastheelementsspacedsidebysideintheplastichousing,sothereisaslight
improvementifyouusetheoutertwoelementsonthepatchonportsAandB(seeFigure46),butthisis
notcritical.OntheAP1600,portAisspacedfurthestfromBandCforbestdiversity,asshowninFigure
47.
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Figure46:6dBiPatchAntenna
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