Millimeter wave rectangular waveguide to grounded CPW transition on multi-layer substrate

Abstract

A rectangular waveguide (WR) to grounded coplanar waveguide (GCPW) is presented for operation in the U-band from 40 to 60 GHz. The WR-to-GCPW is designated for the U-band integrated down-converter system where it connects U-band horn antenna to an integrated system. The proposed transition based on the probe coupling technique is implemented on a single layer Rogers RO4003C RF laminate, and then is extended for the multi-layer substrate in the desired system.