User Manual

MN024-08

The duplexer (TDPX): it combines the downlink (DL) and uplink

(UL) paths into a single one, while maintaining the required

isolation. The module dimensions are: Width = 7TE, Height = 4HE.

The variable RF attenuators (TBSI): it provide independent

attenuations (adjustable from 0 to 30dB, with 1dB steps) on

uplink and downlink RF paths, and allow the designer to optimize

the signal level close to the BTSs. TBSI is an override attenuator,

its dimensions are: Width = 7TE, Height = 4HE.

The dual band coupler (TLDN): in downlink it combines a low

band RF signal (800 to 1000 MHz) and a high band RF signal (1700

to 2500 MHz) into a common RF port; in uplink it splits a composite

signal between a low band RF port and a high band RF port. Module

dimensions are: Width = 7 TE, Height = 4 HE.

The tri band coupler (TLTN): in downlink it combines the low

band signals (800 or 900MHz), the 1800MHz band signal and

2000MHz signal into a common one; in uplink it splits the triple

band signal between three different RF single band paths. Module

dimensions are: Width = 7 TE, Height = 4 HE.

Fig. 2.7:

The TDPX duplexer

Fig. 2.8:

The TBSI variable attenuator

Fig. 2.9:

The TLDN tri- band coupler

Fig. 2.10:

The TLTN tri-band coupler