Patent ID: 7592887

Claim:
A waveguide interface, comprising: a choke flange associated with a first waveguide, the choke flange comprising a body and a neck, the neck having a mating face opposite the body, the mating face comprising an opening for the first waveguide, wherein a width of the body being one wavelength corresponding to a design frequency and a width of the neck being one half-wavelength corresponding to the design frequency; and a shield flange associated with second waveguide, the shield flange comprising a base and a wall projecting from the base, the base having a mating face with a waveguide opening for the second waveguide, the shield flange being configured such that the mating face of the shield flange faces the mating face of the choke flange to operatively couple the associated waveguides, wherein the neck and body of the choke flange and the base and the wall of the shield flange define an air gap.