Patent ID: 6967282
Filing Date: 2005-11-22
Classification: H01L,H01P,H05K

Abstract:
1. A hybrid assembly operating at an operating frequency comprising: a substrate having an upper surface and a lower surface, said lower surface covered by a conductive layer connected to ground potential; conductive paths on said upper surface for conducting high frequency signals along said upper surface of said substrate; first polygons made of a first electromagnetic band gap material on said upper surface, said first electromagnetic band gap material having slow wave characteristics in a first band, said first polygons forming a lattice for tessellating said upper surface, each of said first polygons having a first periphery at a first position; each of said first polygons separated along said first periphery from adjacent first polygons by a first interspace; said first polygons separated by a first distance from said conductive paths; each of said first polygons connected to a first conductive via, said first conductive via traversing said substrate and connected to said conductive layer on said lower surface of said substrate.