Patent ID: 6249439
Filing Date: 2001-06-19
Classification: H01P,H05K

Abstract:
A millimeter wave multilayer assembly, comprising:a multilayer board, comprising:a plurality of laminated printed wiring board interconnect layers adjacently disposed, each interconnect layer having a predetermined pattern of interconnect metalization disposed thereon and a plurality of metalized interconnect vias extending therethrough which couple each interconnect metalization of each of said interconnect layers;a lower ground layer disposed on the interconnect layers, said lower ground layer having substantially continuous metalization disposed thereon and a plurality of metalized lower ground vias extending therethrough;an RF layer disposed on said lower ground layer, said RF layer having a predetermined pattern of microstrip and stripline metalization disposed thereon and a plurality of metalized RF vias extending therethrough;an upper ground layer disposed on said RF layer, said upper ground layer having substantially continuous metalization disposed thereon, a plurality of metalized upper ground vias extending therethrough and a stripline to microstrip RF transition area;a cavity defined in said upper ground layer, RF layer, lower ground layer and at least one top layer of said interconnect layers; anda microwave and millimeter wave integrated circuit (MMIC) chip disposed in said cavity and connected to said interconnect metalization and said microstrip; anda frame coupled to said multilayer board, said frame having a waveguide input and a waveguide output, said waveguide input and waveguide output having a ridge probe positioned above said microstrip.