| 摘要 |
PROBLEM TO BE SOLVED: To provide a small-sized acoustic wave filter device capable of increasing an attenuation of harmonic.SOLUTION: An acoustic wave filter device 1 further includes a first inductor L3, a second inductor L2, and a capacitor C. The first inductor L3 is connected between a connection point 33 between an antenna 14 and an antenna terminal 11 and a ground potential. The second inductor L2 is provided between at least two parallel arms of parallel arms 24 to 26 among a plurality of parallel arms 24 to 27 and the ground potential. The capacitor C is connected between a connection point 29 between the second inductor L2 and at least two parallel arms of the parallel arms 24 to 26 and a connection point 28 between a transmission-side filter 20 and the antenna terminal 11. |
