公开(公告)号：US3649475A

公开(公告)日：1972-03-14

申请号：US3649475D

申请日：1969-07-22

Applicant: GEN DYNAMICS CORP

Inventor： DEGNAN JOSEPH F ,  AYOTTE ROBERT A

IPC: H01P3/08 ,  H05K1/02 ,  H05K1/03 ,  H05K3/38 ,  H05K3/42 ,  H05K3/46 ,  C23B5/48 ,  B44D1/18

CPC classification number: H01P3/085 ,  H01P3/088 ,  H05K1/024 ,  H05K1/032 ,  H05K3/386 ,  H05K3/429 ,  H05K3/4652 ,  H05K3/4655 ,  H05K3/4697 ,  H05K2201/015 ,  H05K2201/0195 ,  H05K2201/0715 ,  H05K2203/068 ,  Y10T156/1052

Abstract: A MULTI-LAYER PRINTED CIRCUIT BOARD FOR USE IN MICROWAVE FREQUENCY CIRCUITS IS DESCRIBED. THE BOARD HAS AT LEAST A PAIR OF PRINTED CIRCUIT BOARDS HAVING POLYTETRAFLUORETHYLENE SUBSTRATES, ONE OF WHICH IS SINGLE SIDED AND THE OTHER OF WHICH IS DOUBLE SIDED. ONE CIRCUIT OF THE DOUBLE SIDED BOARD PROVIDES AN INTERNAL LAYER OF THE MULTI-LAYER BOARD. THE OUTER LAYERS FORM GROUND PLANES SUCH THAT STRIPLINE

CIRCUITS ARE PROVIDED FOR CONNECTION TO MICROWAVE CIRCUIT COMPONENTS. THE PROCESS INCLUDES STEPS FOR LAMINATING THE BOARDS TOGETHER PROVIDING PLATED THROUGH HOLES WHICH PERMIT POLYETRAFLUORETHYLENE TO BE USED IN A MANNER COMPATIBLE WITH MICROWAVE CIRCUIT REQUIREMENTS.