User Guide

SAMSUNG Proprietary-Contents may change without notice
6-8
Circuit Description
ISOLATOR (F445)
Isolator is used to reduce a reflected signal to
protect the power amp module from being
damaged.
DUPLEXER(F446)
Duplexer allows Rx frequency range(881.49± 12.5
MHz) and Tx frequency range(836.03± 12.5 MHz)
from the antenna to pass through LNA. It also
matches LNA input in receiving part and Power
Amplifier output in transmitter part with the
antenna.