Filter element

摘要

A filter element includes a coil part formed in an overall tubular shape by layering a pair of signal transmitting belt-shaped conductors and a grounding belt-shaped conductor with a belt-shaped insulator in between and winding so that the grounding belt-shaped conductor is outside a pair of signal transmitting belt-shaped conductors, a magnetic body attached to a center of the coil part; a pair of input terminals that are connected to respective outermost circumferential parts of the pair of signal transmitting belt-shaped conductors and are respectively led from outer circumferential positions of the coil part; a pair of output terminals that are connected to respective innermost circumferential parts of the pair of signal transmitting belt-shaped conductors and are respectively led from central positions of the coil part located on an opposite side to leading positions of the pair of input terminals with the magnetic body in between; and a grounding terminal that is connected to an outermost circumferential part of the grounding belt-shaped conductor and is led from an outer circumferential position of the coil part located on an opposite side to the leading positions of the pair of input terminals with leading positions of the pair of output terminals in between.