Contactless test method and system for testing printed...

Details Contactless test method and system for testing printed... Contactless test method and system for testing printed...

G - Physics

01

R

G01R 31/302 (2006.01)

Patent

CA 2049616

This application describes a novel method and its implementation for testing unpopulated and populated electronic printed circuit boards (PCBs). This method can be used to develop a new contactless test system (CTS). While eliminating drawbacks of existing test systems, this method measures electromagnetic near field distribution in the vicinity of a PCB, contactlessly, by using suitable sensors (possibly printed near field planar antennas) and sensitive measuring and processing devices. The electromagnetic fields (EMF) are generated by the distribution of charges and currents on paths and elements of the board under test (BUT). Therefore, accurate and repeatable measurements of these fields produce a specific pattern for the BUT. Such a pattern is then compared to a known pattern for the same type of board to determine whether the BUT is faulty or non-faulty.

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