User Manual

Combined Repeater
Figure 5-5 shows an example of a combined channel selective and band
selective repeater. The channel selective part is located in the cabinet and
the band selective part in the cover.
This example has four bi-directional GSM channels and band selective
operation.
Any combinations of channel selective GSM part (page 5-4), channel
selective CDMA part (page 5-5) and band selective part (page 5-7) can be
mixed.
Main units: ALI Alarm Interface board
BSA Band Selective Amplifier board, fixed or adjustable band width
CHA Channel Selective Amplifier board, GSM type
CMB Combiner unit
CU Control Unit board
DC Directional Coupler
DPX Duplex filter
LNA Low Noise Amplifier
PA Power Amplifier board
PSU1,2 Power Supply Unit 1 and 2
RIA Repeater to Repeater Interface Adapter (optional)
123 4
567 8
CHA1
DL
(2 ch.)
MS
Mobile station
antenna
BS
Base station
antenna
CHA2
DL
(2 ch.)
CHA3
UL
(2 ch.)
CHA4
UL
(2 ch.)
LNA DL
Downlink
LNA UL
Uplink
CMB
Downlink
DPX
MS
DC
MS
CU
ALI
DC
BS
CMB
Uplink
DPX
BS
PSU1
BSA
DL
PA
DL
BSA
UL
PA
UL
LNA UL
Uplink
LNA DL
Downlink
PSU2
RIA
Figure 5-5. Combined repeater
Functional Description AR Repeaters ALLGON System AB
5 - 8 Rev. P1A 2000-09 User’s Manual VD203 66/EN