crossing the boundary of the metal plane 231 perpendicularly there is no specific limitation because the effect of the present invention will be achieved provided that the through via holes 232 are peripherally provided on the metal plane 231 so as to be arranged in the form of a ring shaped through via hole array structure 2320 referring now to fig4 a schematic view of an embodiment of an apparatus for silencing electromagnetic noise according to the present invention is shown as depicted in the diagram in a preferred embodiment of the apparatus for silencing electromagnetic noise according to the present invention a plurality of ring shaped through via hole crystalline units 23 are provided between the high voltage plane 21 and the low voltage plane 22 which are parallel and more particularly the ring shaped through via hole crystalline units 23 are provided between the high voltage plane 21 and the low voltage plane 22 at a regular interval thereby forming an omnidirectional noise suppression frequency band 24 between the high voltage plane 21 and the low voltage plane 22 besides fig5 is a schematic view showing a second embodiment of the present invention as shown in the diagram the present embodiment is derived from the same design concept of the previous embodiment the only difference is that the apparatus for silencing electromagnetic noise 50 of the present embodiment includes a high voltage plane 51 a low voltage plane 52 two metal planes 5311 5312 between the high voltage plane 51 and the low voltage plane 52 and a plurality of through via holes 532 each of the through via holes 532 is perpendicularly connected between the metal plane 5311 and the metal plane 5312 the.