Patent ID: 6114188
Filing Date: 2000-09-05
Classification: C04B,H01L

Abstract:
A method of forming a monolithic integrated self-biased circulator, comprising:providing a semiconductor wafer substrate;patterning said semiconductor wafer substrate to form at least one raised silicon pedestal portion of said semiconductor wafer substrate;disposing a microwave device ground plane metallization layer on said patterned semiconductor wafer substrate;providing a low-loss dielectric filling material on regions of said ground plane metallization other than above said at least one raised pedestal portion of said semiconductor wafer substrate;forming plural isolated bond layer pads, spaced to provide electrical isolation between said ground plane metallization and conductive components disposed on said filling material;procuring a c-axis oriented hexaferrite CTMO-film on a host substrate;patterning and etching said CTMO-film to form a plurality of CTMO-film subcomponents on said host substrate;bonding at least one of said plurality of CTMO-film subcomponents on said at least one raised pedestal portion of said semiconductor wafer substrate;removing said host substrate from said at least one CTMO-film subcomponent; andproviding a device top metallization layer on said at least one CTMO-film subcomponent and said filling material not having said CTMO-film subcomponent adjacent thereto.