IF SAW FILTER MATCHING DEVICE IN MOBILE COMMUNICATION TERMINAL

摘要

PURPOSE: An IF(Intermediate Frequency) SAW(Surface Acoustic Wave) filter matching device in a mobile communication terminal is provided to decrease the number of components of an RF(Radio Frequency) circuit and reduce cost by performing a merge impedance matching of an IF SAW filter terminal in a tri-mode terminal. CONSTITUTION: A merge matching unit(400) performs a merge impedance matching of output terminals of a CDMA(Code Division Multiple Access) IF SAW filter unit(100) and a PCS(Personal Communication Service) IF SAW filter unit(200) and an input terminal of an IFR(IF Receiver)(300). The merge matching unit(400) receives an IF signal with a CDMA band from the CDMA IF SAW filter unit(100) and outputs the IF signal to the IFR(300). The merge matching unit(400) receives an IF signal with a PCS band from the PCS IF SAW filter unit(200) and outputs the IF signal to the IFR(300).