Patent ID: 7888957

Claim:
A probing apparatus comprising: (a) an interface board; and (b) an interface board waveguide comprising a plurality of elongate conductive traces supported by said interface board including: (i) a center trace having a first edge and a second edge defining a center trace width; (ii) a first side trace spaced apart from said first edge of said center trace and having a first side trace width; (iii) a second side trace spaced apart from said second edge of said center trace and having a second side trace width, said second side trace width differing from said center trace width; and (c) a coaxial cable comprising: (i) a center conductor arranged to conduct a first signal and conductively connected to said center trace of said interface board waveguide; and (ii) a coaxial outer conductor conductively connecting said first side trace and said second side trace of said interface board waveguide to an electrical potential.