| 摘要 |
PROBLEM TO BE SOLVED: To provide a filter and a duplexer that have satisfactory characteristics.SOLUTION: The filter includes a reception filter circuit 14 connected between a first terminal Ant and second terminals (Rx1, Rx2), and a matching circuit 20 connected between the filter circuit 14 and the second terminals (Rx1, Rx2). An impedance of the matching circuit 20 viewed from the second terminals (Rx1, Rx2) is lower than an impedance of the reception filter circuit 14 viewed from a node between the reception filter circuit 14 and the matching circuit 20. |
