HIGH-FREQUENCY FRONT-END MODULE

摘要

A high-frequency front-end module (10) is provided with a variable circulator (20), a transmission filter (30), and a reception filter (40). Capacitors (231, 232) that are selectively connected by a switch (221) are provided between an antenna port (CPc) and a transmission port (CPt) of a circulator (21) of the variable circulator (20). Capacitors (233, 234) that are selectively connected by a switch (222) are provided between the antenna port (CPc) and a reception port (CPr) of the circulator (21). Capacitors (235, 236) that are selectively connected by a switch (223) are provided between the transmission port (CPt) and the reception port (CPr) of the circulator (21). By selecting the capacitors, the phase characteristics between ports are adjusted to characteristics corresponding to transmission signals that are the transmitted and reception signals.