User's Manual

CDMA REPEATER
4. System Block Diagram
4.1 Block Diagram
< Fig. 7 > Block Diagram
4.2 Block Diagram description
The filter as a cavity typed one is linked with Donor ANT and Service ANT of CDMA repeater,
which selectively passes the broadband wanted between the received signal and terminal signal.
Up/Down Converter Module consists of Down converter, Up converter and IF SAW Filter of
variable bandwidth from Filter to PAU input between Down link and Up link of CDMA repeater.
And to handle two bands of
1900M band and 1800M band same structure comprises in couple.
Up/Down converter of the Down Link converts the base station signals inputted through the LNA
part into the IF frequency(140MHz), which are divided into 1 path of 20MHz bandwidth and 3