COMMON MODE FILTER

摘要

This common mode filter (101) comprises, between ports (P1, P2) and ports (P3, P4), a differential transmission line constituted by a first signal line (SL1) and a second signal line (SL2). A first inductor (L1) is inserted in series in the first signal line (SL1), and a second inductor (L2) is inserted in series in the second signal line (SL2). A first resonant circuit (RC1) is provided between a first terminal of the first inductor (L1) and the ground, and a second resonant circuit (RC2) is provided between a first terminal of the second inductor (L2) and the ground.