Patent ID: 6731189
Filing Date: 2004-05-04
Classification: H01P,H05K

Abstract:
A method for interconnecting multilayer stripline radio frequency (RF) circuits comprising:providing a first stripline sub-assembly, the first stripline sub-assembly having a first plurality of vias disposed on a first surface of the first stripline sub-assembly; providing a second stripline sub-assembly, the second stripline sub-assembly having a second plurality of vias disposed on a first surface of the second stripline sub-assembly; depositing a volume of solder into selected ones of the first plurality of vias; depositing each of a plurality of solid metal balls into selected ones of the first plurality of vias; re-flowing the volume of solder on the first stripline sub-assembly at a first temperature such that each of the plurality of solid metal balls is in fluid contact with a corresponding one of the first plurality of vias; disposing a epoxy sheet on the first surface of the second stripline sub-assembly; dispensing conductive epoxy into selected ones of the second plurality of vias; and bonding the first surface of the first stripline sub-assembly to the first surface of the second stripline sub-assembly at a second temperature such that the epoxy sheet is set and wherein the second temperature is lower than the first temperature.