Patent ID: 7498896
Filing Date: 2009-03-03
Classification: H01P

Abstract:
1. High frequency electrical waveguide to microstrip line coupling apparatus comprising: a waveguide comprising a generally cylindrical wall; a substrate having a ground plane conductor one side and a microstrip line coupled to a microstrip patch on an opposite side, the microstrip patch having a resonance with the waveguide encompassing a predetermined high radio frequency bandwidth of signals to be conducted by the apparatus, the waveguide having an end perpendicularly attached to the substrate surrounding and substantially centered on the microstrip patch and further having a wall opening adjacent the substrate through which the microstrip extends; and a via fence comprising a plurality of parallel conductors aligned with the waveguide wall and extending through the substrate to electrically couple the waveguide to the ground plane conductor, the ground plane conductor extending substantially across the entire area of the substrate bounded by the via fence.