Patent ID: 7388424
Filing Date: 2008-06-17
Classification: G01R

Abstract:
1. A probe card providing isolation of high frequency signals from a test controller, the high frequency signals transmitted between components of at least one integrated circuit (IC), the probe card comprising: contact elements provided on a first surface of a substrate to make electrical contact with the at least one IC; a transmission line interconnecting at least two of the contact elements, the transmission line for carrying the high frequency signals between the at least two contact elements; an electrical connector configured to connect electrically the probe card to a test controller; a capacitor connected to the transmission line, the capacitor being part of a three pole filter; and an electrical path between the electrical connector and the transmission line, the electrical path comprising one of a break that electrically isolates the electrical connector from the transmission line or a switch configured to selectively connect and disconnect electrically the electrical connector and the transmission line.