| 摘要 |
PROBLEM TO BE SOLVED: To provide a noise suppression member that does not impede implementation of a circuit board, and can maintain good communication quality while suppressing electromagnetic interference.SOLUTION: A noise suppression member comprises a magnetic thin film D arranged in the proximity to a coplanar line B which is a circuit, and is configured such that at a prescribed frequency band fthe sum of the magnetic resistance inside the magnetic thin film D and the magnetic resistance of a magnetic leakage flux path from the magnetic thin film D will be 0. The communication frequency band of the circuit is preferably included in a prescribed frequency range W where the shield effect of the magnetic thin film D is negative. The magnetic thin film D is preferably a soft magnetic thin film about which the real part of relative magnetic permeability is negative at a frequency band at or above a ferromagnetic resonance frequency. |
