Specifications

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Multi‐TechSystems,Inc.MultiModemCellUserGuide 21
Appendix B - Cellular Information
AntennaSystemforCellularDevices
Wirelessperformancedependsonimplementationandantennadesign.Theintegrationoftheantennasystem
intotheproductisacriticalpartofthedesignprocess;therefore,itisessential toconsideritearlyso
performanceisnotcompromised.IfyoumakechangestothecertifiedantennasystemoftheMultiModem,
thenrecertifi
cationisrequiredbyspecificnetworkcarrierssuchasSprint.Theantennasystemisdefinedasthe
UFLconnectionpointfromtheMultiModemtothespecifiedcablespecificationsandspecifiedantenna
specifications.
FCCRequirementsfortheAntenna
Theantennagain,includingcableloss,fortheradioyouareincorporatingintoyourproductdesignmustnot
exceedtherequirementsat850MHzand1900MHzasspecifiedbytheFCCgrantformobileoperationsand
fixedmountedoperationsasdefinedin2.1091and1.1307oftheFCCrulesforsatisfyingRFex
posure
compliance.Theantennausedfortransmittingmustbeinstalledtoprovideaseparationdistanceofatleast
20cmfromallpersonsandmustnottransmitsimultaneouslywithanyotherantennatransmitters.Userand
installersmustbeprovidedwithantennainstallationinstructionsandtransmit teroperatingconditionsto
satisfyingRFexposurecompliance.
AntennaSpecifications
CDMA/EVDOAntennaRequirements/Specifications
FrequencyRange
824
–
894MHz/1850
–
1990MHz
Impedance
50Ohms
VSWR
VSWRshallnotexceed2.0:1atanypointacrossthebandsofoperation
TypicalRadiatedGain
3dBionazimuthplane
Radiation
Omni‐directional
Polarization
Vertical
TRP/TIS
Thetotalradiatedpower(TRP)attheantennashallbenolessthan+21/20dBmforPCS/Cell
channelsrespectively,andthetotalisotropicsensitivity(TIS)attheantennashallbenoless
than‐104/104dBmforPCS/Cellchannelsrespectively.
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