Functional Test of a Communication System by Fast Visualization of the Very-Near-Field Radiation Using Infrared Thermography

This paper presents a functional test of a communication system based on infrared thermography measurements. This non-intrusive method allows to measure, in a few dozen seconds, the very-near-field radiated by the antennas integrated in the system under test. More particularly, the measurements are carried out on a Wi-Fi communication system operating in the 2.4 GHz and 5 GHz bands. The coupling between the radiation of one subsystem and that of the other subsystem is identified by visualizing the radiated field close to the system surface.