Andrew Wireless Innovations Group RPT-MR701 用户手册
User’s manual for Repeater MR801B Power
M0067A0A.doc
Id.-No 151111
Page 19
02-JUNE-99
2.5 Duplexer
The task of the duplexer is to isolate uplink from downlink, i.e. isolate transmit path from
receive path. The pass bandwidth of the duplexer is the entire width of the uplink band and
the downlink band.
receive path. The pass bandwidth of the duplexer is the entire width of the uplink band and
the downlink band.
UL frequency
DL frequency
824 - 849 MHz
869 - 894 MHz
Duplexer with connector to mobile side
Duplexer with connector to BTS side
figure 2-5 Top view of the duplexers
30 dB
coupler
coupler
30 dB
coupler
coupler
20 dB
coupler
coupler