NOISE FILTER FOR CONTROLLING ELECTROMAGNETIC INTERFERENCE

摘要

PURPOSE: A noise filter for controlling electromagnetic interference is provided to attenuate noise by absorbing high-frequency elements. CONSTITUTION: A noise filter includes a laminated body, line conductors, and ground conductors. The laminate body includes magnetic layers(2a-2h). The ground conductors(6) are formed on a top magnetic layer and a bottom magnetic layer of the magnetic layers, respectively. The ground conductors and line conductors(3-5) are alternately formed between the magnetic layers. The line conductors are connected serially to each other. Each of the magnetic layers is formed with a magnetic oxide and generates little or no attenuation of an electrical signal within a frequency range below a frequency at which a magnetic loss occurs and attenuates an electrical signal within a frequency range where the magnetic loss occurs.