Patent ID: 7876114

Claim:
An apparatus for probing a device under test; said apparatus comprising: (a) an elongate waveguide comprising a waveguide wall including a waveguide end portion and a surface defining a waveguide channel, said waveguide channel defined by a major dimension and a shorter minor dimension, said major dimension and said minor dimension measured substantially normal to a longitudinal axis of said waveguide channel; (b) a dielectric substrate comprising a first substrate portion affixed to said waveguide wall adjacent a bisector of said major dimension of said waveguide channel and extending from a point of attachment to said waveguide wall toward an opposing side of said waveguide channel and a second substrate portion supported by said first substrate portion and extending from said waveguide channel a distance beyond said waveguide end portion; (c) a contact supported by said substrate and engageable with a probe pad of a device under test; and (d) an electrical conductor conductively interconnected with said contact and including a conductor end portion supported by a surface of said substrate, said conductor end portion conductively interconnected with said waveguide wall proximate said bisector of said major dimension of said waveguide channel.