PA - Power Amplifier
Two PA, Power Amplifier, are located in the middle of the BSC board in
shielded covers. PA/DL (downlink) is located to the left and PA/UL
(uplink) to the right.
The final power amplification for the downlink signal is performed in the
PA/DL stage. Then the signal is fed via the P128 port to the HI port of
the DPX/MS duplex filter and from this filter to the MS antenna.
The uplink final power amplification is performed in the same way and is
fed to the BS antenna via the P121 port and the HI port of the DPX/BS
duplex filter.
Connection
The P121 and P128 ports are connected as shown on
ANT
HI
LO
ANT
LO
HI
DPX
MS
DPX
BS
P126
P127
P122
P123
P128
P121
P119 P120
P112
LNA/DL
PA/DL
LNA/UL
PA/UL
P111
P113
Figure 5-5. PA, Power Amplifiers
ALLGON Systems AB
ALR Compact Repeater
Functional Description
VD203 67/EN - User’s Manual
Rev. 1A 2000-07
5 - 13
