User's Manual

13
2.2.2 Downlink Block Diagram
CoverCell 25K is a dual band repeater that can handle cellular and PCS signals. Basically RF
modules are separated from each path and band. One module can handle all the functions
except 4 plexer and digital filter. Also one integrated chip which includes local and mixer
consists a block and input detect process is performed to prevent external signals from affecting
other signals after signals are through a digital filter.
[Figure 4] COVERCELL 25K RF Repeater Downlink Block Diagram
COVERCELL 25K RF Repeater
Downlink Block Diagram
Cellula
r
Donor
Coverage
Digital Filter
Mixer + Local
Input Det
Output Det
Output Det
LNA
LNA
PCS
Cavity
Filter
Cavity
Filter
PAM
PAM
Digital Filter
Mixer + Local
Input Det