US Patent 7259446 Heat sink packaging assembly for electronic components

A packaging assembly (100) includes a plurality of dissimilar die (102, 104, 106) bonded to a base board (110) and ground coupled to a heat sink (108) through an opening (132). A mating board (112) is coupled to the base board (110) to provide separate surface mountable contacts (148-158, 166) with which to independently bias each die (102, 104, 106) while the heat sink (108) provides thermal dissipation for the die. Assembly (100) provides a surface mountable package well suited to multiband applications.