User Manual

147
MN024-08
Description:
The TLDN is a passive RF
dual band coupler
designed to distribute
signal within the master
unit when coming from
different bands.
Main operations carried out are:
¾ in downlink it combines a low band RF signal (800MHz to 1000MHz) and
a high band RF signal (1700MHz to 2200MHz) into a common RF path
¾ in uplink it filters the composite signal into a low-band (800MHz to
1000MHz) and a high-band (1700MHz to 2200MHz) one.
It is a passive module.
RF ports
• 1 UL common
RF input port
(“C”) for the
combined UL
signal
• 1 UL high-
band RF
output port
• 1 UL low-band
RF output port
• 1 DL common
RF output port
(“C”) for the
combined DL
signal
• 1 DL high-
band RF input
port
• 1 DL low-band
RF input port
TLDN main
applications
Main applications of the TLDN module are:
• Connecting 2 donor sources with different services to one TFLN master
optical TRX in a dual band system, so that:
¾ TLDN combines the DL inputs coming from the 2 different donor
sources (carrying different services) into an output signal entering
the TFLN master optical TRX
TLDN
DL common RF
port (SMA-f)
DL high-band RF
port (SMA-f)
DL low-band RF
p
ort
(
SM
A
-f
)
UL high-band RF
port (SMA-f)
UL low-band RF
port (SMA-f)
UL common RF
port (SMA-f)
Fig. 5.18: The TLDN dual-band coupler
Module name:
RF dual-band coupler
TLDN