| 摘要 |
A front-end circuit is provided with: a band switching unit (20) which is directly or indirectly connected to an antenna (10), and switches connection to a frequency band for transmission and reception among a plurality of frequency bands; a plurality of separators (31-34) which separate a transmission signal and a reception signal in each of the frequency bands; and an antenna matching circuit (41-44), wherein the antenna matching circuit (41-44) is disposed between at least one or more separators among the plurality of separators (31-34) and the band switching unit (20). For example, the antenna matching circuit (41-44) includes a reactance element (L1, L2, C32, C42) connected in series to a circuit connecting the band switching unit (20) and the separators (31-34) and a reactance element (C1, C2, C31, C41) connected in shunt thereto. |
