CIRCUIT AND METHOD FOR SUPPRESSION OF ELECTROMAGNETIC COUPLING AND SWITCHING NOISE IN MULTILAYER PRINTED CIRCUITS BOARDS

摘要

Apparatus for suppressing noise and electromagnetic coupling (3402) in the printed circuit board (3400) of an electronic device (3404) including an upper conductive plate (3420) and an array of conductive coplanar patches positioned a distance t2 from the upper conductive plate. The distance t2 is chosen to optimize capacitance between the conductive coplanar patches and the upper conductive plate for suppression of noise or electromagnetic coupling. The apparatus further includes a lower conductive plate (3422) at a distance tl from the array of conductive coplanar patches and conductive rods (3126) extending from respective patches to the lower conductive plate.