Bird Technologies Group 61470A Benutzerhandbuch
Bird Technologies Manual 7-9558-2.3 05/14/15 Page 13
Uplink and Downlink Input Signals
Uplink input signals are picked up by the DAS
antenna and are passed through an isolator before
being applied to a bandpass filter. The signals pass
through the filter and are fed into the uplink input
port of the channel module. Downlink input signals
are picked up by the Donor antenna and are
passed through an isolator before being applied to
a bandpass filter. The signals pass through the fil-
antenna and are passed through an isolator before
being applied to a bandpass filter. The signals pass
through the filter and are fed into the uplink input
port of the channel module. Downlink input signals
are picked up by the Donor antenna and are
passed through an isolator before being applied to
a bandpass filter. The signals pass through the fil-
ter and are applied to the downlink input port of the
channel module.
channel module.
Channel Module
The uplink input signals and the downlink input sig-
nals are applied to a down-converter board when
they enter the channel module. Within the channel
module input signals are down converted, digitized,
and DSP filtering is performed. There are two
styles of Channel modules available, a 14 filter ver-
nals are applied to a down-converter board when
they enter the channel module. Within the channel
module input signals are down converted, digitized,
and DSP filtering is performed. There are two
styles of Channel modules available, a 14 filter ver-
Figure 5: Front view of the booster.
Channel Module
Control
Board
Power
Supply
Filters
Power
Amplifier
Circulator
Circulator
Line
Filters
Circuit
Breakers