Patent ID: 6373269
Filing Date: 2002-04-16
Classification: G01R,H05K,Y10T

Abstract:
A circuit board for use with a wireless test fixture for interfacing a high density plurality of test points with a device to be tested comprising a body having upper and lower face surfaces, the upper face surface disposed generally in a plane, the body formed of a plurality of electrically insulating layers laminated to one another, the body having a signal portion having a first selected thickness and a second integrally formed signal transfer portion having a second selected thickness greater than the first selected thickness, the circuit board having more than seven thousand test points, a conductive signal trace for each test point having a first portion embedded in the first signal portion and extending in a direction generally parallel to the plane in which the upper face surface is disposed and extending into the second signal transfer portion, a test pad formed on the lower face surface of the second signal transfer portion, each conductive signal trace having a second transfer portion entirely embedded in the body and extending from the respective first portion in a direction toward the lower face and into electrical connection with a test pad to form a test point.