Patent ID: 6759743
Filing Date: 2004-07-06
Classification: H01L,H05K

Abstract:
A thick film millimeter wave transceiver module comprising:base plate; a multi-layer, thick film substrate board formed from a plurality of planar sheets of low temperature co-fired ceramic material stacked and bonded together without intermediate conductive sheet layers so as to constitute a single, planar substrate having one planar bottom surface sheet with a planar bottom and one planar top sheet with a planar top surface, and received on said base plate and a plurality of MMIC chips attached to the top surface of the substrate board through a solder, conductive adhesive, or shims and operable to transmit and receive millimeter wavelength signals, said substrate board comprising: a lower DC signals layer formed from a separate sheet and having signal tracks and connections; a ground layer formed from a separate sheet and having ground connections and positioned over said DC signals layer; a device layer formed from a separate sheet and having capacitors and resistors embedded therein that connect to MMIC chips and positioned over said ground layer; a planar sheet of low temperature co-fired ceramic material positioned at said one planar top surface and having cutouts for receiving the MMIC chips therein; a channelization plate received over the top surface of the substrate board and having channels formed to receive the MMIC chips and provide air isolation between transmit and receive signals; and isolation and/or interconnect and/or ground vias which extend through the device layer to the ground layer.