Patent ID: 7723999
Filing Date: 2010-05-25
Classification: G01R

Abstract:
1. A probe calibration structure for calibrating a probe having five spaced apart probe tips, said five probe tips arranged in a linear array and operable to communicate a bias to a device under test from a centrally located probe tip and to communicate plural components of each of two radio frequency, differential signals with said device under test with pairs of probe tips disposed to either side of said centrally located probe tip, said probe calibration structure comprising: (a) a substrate having a surface; and (b) a substantially linear array of five contact regions and no more than five contact regions on said surface of said substrate, said five contact regions arranged to spatially correspond to said probe tips of said linear array of five probe tips of a probe to be calibrated, each contact region spaced immediately apart from at least one other contact region, electrically isolated from each other contact region and engageable by a respective one of said five probe tips, a bias conducted by said centrally located probe tip to a centrally located contact region of said array of contract regions and one component of a pair of radio frequency, differential signals conducted to each contact region other than the centrally located contact region by respective contact tips.