User Manual
Airbridge cBTS3612 CDMA Base Station
System Description
2 Hardware Architecture
2-24
3) Interface
l
Fan box electrical interface
Power supply ports and serial port communication ports are provided for the two fan
boxes through MOLEX connectors.
l
System power supply interface
The interface leads in system power through big 3-pin connector.
l
System serial communication interface
External serial communication interface is provided through DB -15.
4) Index
The size of BFNB: 380mm
%
30mm.
2.3 RF Subsystem
2.3.1 Overview
The structure of RF subsystem is as shown in Figure 2-13.
CDU
RLDU
BHPA
BHPA
BTRM
BTRM
To antenna &
feeder
BRDM
BRDM
BHPA
BTRM
BRDM
DFU
f1
f0
f2
To antenna &
feeder
BRDM: Resource Distribution Module
BTRM: Transceiver Module
BHPA: High Power Amplifier Unit
CDU: Combining Duplexer Unit
DFU: Duplexer Filter Unit
RLDU: Receive LNA Distribution Unit
Figure 2-13
Structure of RF subsystem