APPARATUS OF RF FRONT END FOR SUPPORTING MULTI-BAND

摘要

PURPOSE: An RF front end apparatus is provided to configure a dual band filter by using a diplexer and a single filter as an RF front end apparatus. CONSTITUTION: A first dual band filter(232) passes through a first band and a second band. A second dual band filter(234) passes through a set third band and a set fourth band. A first switch(220) connects an antenna of the first dual band filter or the second dual band filter according to a first control signal. A second switch(240) connects a transmitting(260) or a receiving unit(250) according to the second control signal.