Hi Islam Ali
Functions of Duplexer:
1.combines transmitted and received signals into one antenna
2.amplifies received signals with a variable-gain LNA.
Functions of multicoupler:
The multicoupler splits Received (RX) and Diversity-Received (DRX) signals and distribute them to the Transceiver units.
hi , I am a fresher and i m really want to learn the details about the trx and e1 . how the calls are carried out . what it is made up of and other detal . kindly guide me from where i can get the material on net
DUPLEXER is a passive device where TX and RX signals are connected to same antenna for simultaneous transmission and reception.
MULTICOUPLER is a passive device where received signal is splitted to feed a number of receivers(4,8,16).
COMBINER is a passive device where two or more transmitters are combined to feed to a single antenna.