Installation Guide

Duplexer and Low Noise Amplifier
FlexWave Prism RF Modules for Prism Remote Units Installation Guide Page 13
TECP-77-141 Issue 5 • 300001744178 Rev E • November 2013 © 2013 TE Connectivity Ltd.
DuplexerandLowNoiseAmplifier
TheRFModuleprovidesthePRUwithaninternalDuplexerthatisoptimizedtoprovidethe
desiredRFband‐passfilteringandin‐bandequipmentisolationbetweenFWDandREVpaths.
TheDuplexerprovidesthefilteringnecessarytothetransmitandreceivepathstoandfromthe
connectedantenna.
TheDuplexerforthePrismRemoteUnitSingle‐andDual‐CardRFModulesandtheDual‐Slot40W
RFModulescontainsuptotwoREVpathLowNoiseAmplifiers(LNAforPRIand/orSECreverse
paths).EachLNAprovidesthePrismreversepathwithnominal30dBREVgainandsystemNFof
5dBperRXpath.
TheDuplexerforanHDMRFModuledoesnothaveaLowNoiseAmplifier.
Duplexersarenotfieldserviceable.
LinearPowerAmplifiers
TheLinearPowerAmplifier(LPA)isahighqualitybroadbandRFamplifierusedforachieving
Prismproduct‐ratedpowerforthePRUTxforwardpathspectrumRF.ThePAsarepass‐band
specific,withthemaximumcompositeTxpowerlevels,and>10dBinstantaneouspeakpower
ratinglistedin:
• Table5forSingle‐Card,Dual‐Card,andHDMRFModules
• Table6onpage14forDual‐Slot40WRFModules.
TheLPAishousedwithintheRFModule,andisnotfieldserviceable.
Table5. LPAMaximumCompositeTxPowerLevelsforSingle‐Card,Dual‐Card,andHDMRFModules
Passband Maximum
dBm
Watts Instantaneous
Bandwidth
(MHz)
AWS 2100 +43 20 45
Cellular 850 +43 20 25
+46 40 25
EGSM 900 +40 10 35
DCS 1800 +42 15.8 75
LTE 700 Lower ABC +43 20 18
+46 40 18
LTE 700 Upper C +43 20 10
+46 40 10
PCS 1900 +43 20 70
PGSM 900 +40 10 25
SMR 800 +38 6.5 18
SMR 900 +38 6.5 5
UMTS 2100 +42 15.8 60