Rrh Module Main Blocks; Figure 13 Functional Blocks Of The 3-Sector Rf Module - Nokia Flexi Multiradio BTS Technical-Operating Documentation

Flexi Multiradio BTS Radio Module and Remote Radio
Head Description

6.2 RRH Module main blocks

Issue: 05
Figure 13 Functional blocks of the 3-sector RF Module
RFModule
FXDB,FXEB, RET
FXFB
OpticalIF
RF
control
OpticalIF
FRGP,FRIE,
OpticalIF**
FXDA,FXCA,
FXEA,FRKA
DCIN
The RRH includes the following functional blocks:
RF control block
•
There are interfaces from the RF control block towards the System Module
–
through optical connection. Most unit internal connections are made from the RF
control block. Signal processing and unit control functionalities are located in this
block
TX block
•
Analogue RF parts are located in the TX block
–
RF Front end
•
Includes an RX filter with LNAs
–
Processes air interface RF signals for selected channels
–
Provides connection for Flexi Antenna Line to Flexi Multiradio Base Station
–
Supports usage of NSN Masthead Amplifier (MHA) units
–
Contains integrated bias-Ts with over-current and undercurrent alarm
–
detection/protection
PA block
•
The power amplifier block amplifies TX block output signal to a specified output
–
power level
TXRX PA
LNA
RXMain
RXDiversity
LNA
RFloop
LNA
RXDiversity
RXMain
LNA
TXRX PA
LNA
RXDiversity
RXMain
LNA
TXRX PA
PSU
Fanassembly
DN0951745
RF Module and RRH main blocks
Duplexfilter+
DiversityRX
TX
Bias-T VSWR
filter
Tx/Rx
Det
RX
RxOUT
filter
Bias-T
RX Rx
filter
RxOUT*FXCx,FXFx
RxOUT*FXCx,FXFx
Bias-T
RX Rx
filter
RxOUT
RX Bias-T VSWR
filter
Tx/Rx
Det
TX
filter
RxOUT*FXCx,FXFx
Bias-T
RX Rx
filter
RxOUT
RX Bias-T VSWR
filter
Tx/Rx
Det
TX
filter
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