Circuit element for band-pass filter on printed circuit board, has ground conductor with conductive members arranged to achieve desired frequency characteristic

摘要

The circuit element includes a conductive pattern (17) formed in the inner layer of a dielectric substrate (11), to define the characteristic of the circuit element. A ground conductor (12) is formed on the outer layer of the dielectric substrate. The ground conductor is arranged e.g. in a grid pattern, and conductive members are arranged in those regions (15) without ground conductor. By changing the position of the conductive members, to alter the position and area of the regions (15) without ground conductor, the electromagnetic field distribution can be changed, to achieve the desired frequency characteristic. An Independent claim is included for a circuit board module.