Scanner System and Method for High-Resolution Spatial Scanning of an Electromagnetic Field Radiated by an Electronic Device Under Test

摘要

A scanner system and method operable for high-resolution spatial scanning of an electromagnetic field radiated by an electronic device under test (DUT) are provided. The electromagnetic field level radiated by the DUT is measured with a probe array comprising a plurality of spatially separated switched probes, an analyzer, and a computer. An actuator changes the relative position of the probe array to the DUT by a distance less than or equal to the separation distance between the probes, and the electromagnetic field level is measured and stored again.

主权项

1. A scanner system operable for high-resolution spatial scanning of an electromagnetic field radiated by an electronic device under test (DUT), the scanner system comprising:
(a) a probe array comprising a plurality of switched probes, wherein adjacent probes are spaced apart at a separation distance; (b) an analyzer connected to the probe array for determining the electromagnetic field level at each probe location based on a signal induced in each probe by the radiated electromagnetic field; (c) an actuator for changing the relative position of the probe array to the DUT, from a first array position to a second array position; (d) a computer comprising a processor and a memory, wherein the processor is operatively connected to the analyzer and the actuator, and wherein the memory component stores a set of instructions executable by the processor to implement a method comprising the steps of:
(i) measuring the electromagnetic field level at each probe when the probe array is in the first array position to create a first dataset of electromagnetic field levels at the position of each probe in the probe array when in the first array position;(ii) controlling the actuator to change the relative position of the probe array to the DUT from the first array position to the second array position; and(iii) measuring the electromagnetic field level at each probe when the probe array is in the second array position to create a second dataset of electromagnetic field levels at the position of each probe in the probe array when in the second array position.