Patent ID: 7791438

Claim:
A waveguide interface for millimeter wave and sub-millimeter wave applications, the waveguide interface comprising: a. a first member, the first member being provided with a precision recess having a centrally disposed aperture therethrough for connection to a first duct; b. a second member, the second member being provided with a precision boss complimentary to said precision recess and having a centrally disposed aperture therethrough for connection to a second duct so as to join said first duct to said second duct; c. at most one tightly held tolerance junction, wherein said tightly held tolerance junction is the junction of said boss and said recess mated together, and wherein said tightly held tolerance junction is centered on said centrally disposed aperture; and d. at least one additional mating junction between said first member and said second member, wherein said at least one additional mating junction is of lesser tolerance than said tightly held tolerance junction; e. at least one pair of diametrically opposed rotational alignment pins located a specified distance from said centrally disposed aperture on said first member; f. at least one pair of diametrically opposed rotational alignment holes located a specified distance from said centrally disposed aperture on said second member; and g. wherein said pins and holes form at least two additional mating junctions.