Patent ID: 9506968
Filing Date: 2016-11-29
CPC Classification: G01R

Claim Text:
1. A system for scanning for electromagnetic (EM) emission, the system comprising: a fixture system configured to hold a device under test (DUT) and provide electrical connections for the DUT; an operating system connected to the fixture system and configured to allow operation of the DUT; and a measurement system configured to obtain field strength measurements representative of a field distribution over a plurality of selected areas of the DUT during the operation of the DUT, each of the selected areas being smaller than an overall lateral area of the DUT, the measurement system including a magnetic field probe, the magnetic field probe including a loop, the loop including a first end connected to a distal end of an inner conductor and a second end connected to a distal end of an outer conductive shield, the inner conductor and the outer conductive shield arranged in a coaxial configuration, the loop configured so that a change in magnetic field flux through the loop induces a detectable common mode current.