Patent ID: 6765455
Filing Date: 2004-07-20
Classification: H01P,Y10T

Abstract:
A microwave circuit package comprising:a plurality of fluoropolymer composite substrate layers a each substrate layer having a pair of planar surfaces and the plurality of substrate layers being bonded together such that each substrate layer has at least one surface that is adjacent to the surface of another one of the substrate layers; a plurality of metal layers disposed on said surfaces of said plurality of substrate layers; a plurality of groundplanes comprising a first subset of said plurality of metal layers connected by a first plurality of conductors; at least one coupler comprising a plurality of coupling lines, wherein said coupler has a substantially spiral-like shape; and a conductive via passing through at least a pair of substrate layers and through a groundplane positioned between said pair of substrate layers, said conductive via connecting the coupler to signal lines interconnected to signal port terminals, said signal port terminals enabling connection of the coupler to an external signal source; wherein at least two of the substrate layers have different dielectric constants.