User's Manual

Table Of Contents
044-05250 Rev A A-1
Appendix A
Block Diagrams
Introduction
This appendix describes the main signals paths for the different AR Standard Repeater
models.
CSel GSM Repeater
Figure A-1 CSel GSM Repeater Block Diagram
Figure A-1 illustrates a block diagram of a CSel repeater with four bi-directional channels.
This diagram is applicable to repeaters for the GSM, DCS, and PCS systems.
The signal from the base station is received via the repeater donor antenna and then
forwarded through a DC, used as an antenna port only if an RF modem is used. The signal
passes a DPX, is amplified in a LNA, and enters the CHEs which have two parallel channels
each. The first mixer stage on the CHE, which is controlled by a synthesizer, converts the
received frequency down to the IF frequency. The signal is then filtered by SAW bandpass
filters and amplified before it is fed to the second mixer stage for conversion back to the
original frequency.
DC
BS
P31
P33
TEST –30 dB
CHE1 - DL
CHE2 - DL
CHE3 - UL
CHE4 - UL
DPX
LNA
DL
CMB
DL
MS –20 dB
DPX
ALI / RCI
CU
WLI
P34/
P36
P130 P130
ANT DPX
ANT
HI
LO
HI
LO
IN
OUT2
OUT1
P101
P701
P101
P701
ANT
P101
P101
P701
P701
LNA
UL
IN
OUT1
OUT2
CMB
UL
RCU
PSU
RCI
MSC