Patent ID: 7403025

Claim:
A membrane probing assembly comprising: (a) a probe card with conductors supported thereon, including: (i) an elongate probe card signal conductor including an end portion and a first portion having a first edge and a second edge; and (ii) a probe card guard conductor comprising a first portion spaced apart from said first edge of said first portion of said probe card signal conductor, a second portion spaced apart from said second edge of said first portion of said probe signal conductor and a third portion interconnecting said first and said second portions of said probe guard conductor proximate to, but spaced apart from said end portion of said probe card signal conductor; and (b) a membrane assembly including a membrane supporting: (i) an elongate membrane signal conductor including an end portion and a first portion having a first edge and a second edge; and (ii) a membrane guard conductor comprising a first portion spaced apart from said first edge of said first portion of said membrane signal conductor, a second portion spaced apart from said second edge of said first portion of said membrane signal conductor and a third portion interconnecting said first and said second portions of said membrane guard conductor proximate to, but spaced apart from said end portion of said membrane signal conductor.