User Manual

Advanced RF Technologies, Inc.
49
Frequency
Specifications
DL
UL
FirstNet + PS 700
758 - 768MHz
788 - 798 MHz
Signal Flow
Downlink
Base
Station
TRIPLEXER
UDC
(before DSP)
DSP
UDC
(After DSP)
HPA TRIPLEXER
Mobile
Station
Figure 8-1 Downlink Signal Flow
1. Donor Triplexer band Passes DL signal
2. DL UDC (before DSP) amplifies, adjusts this signal received via antenna from Base Station signal to
appropriate level and then transmits the signal to DL DSP.
3. DL DSP has a digital filter, which converts analog signal to digital signal, does digital filtering and then
converts digital signal to analog signal.
4. DL UDC (after DSP) adjusts to appropriate level and then transmits to DL HPA.
5. DL HPA amplifies the signal from DL UDC high power level and then transmit to Triplexer
6. Server Triplexer band passes DL band signal and then transmits to Mobile Station antenna
Uplink
Mobile
Station
TRIPLEXER
UDC
(before DSP)
DSP
UDC
(After DSP)
HPA TRIPLEXER
Base
Station
Figure 8-2 Uplink signal flow
1. Server Triplexer band Passes DL signal
2. UL UDC (before DSP) amplifies, adjusts this signal received via antenna from Base Station signal to
appropriate level and then transmits the signal to DL DSP.
3. UL DSP has a digital filter, which converts analog signal to digital signal, does digital filtering and then
converts digital signal to analog signal.
4. UL UDC (after DSP) adjusts to appropriate level and then transmits to UL HPA.
5. UL HPA amplifies the signal from DL UDC high power level and then transmit to Triplexer
6. Donor Triplexer band passes DL band signal and then transmits to Base Station antenna