Infrared detection of free-field and cavity perturbations of electromagnetic probe measurements

摘要

Abstract: An infrared detection technique has been developed to detect and map electric fields near radiation sources or scattering bodies. This infrared technique is used to determine the most accurate use of standard electric D-dot and magnetic B-dot probes when used to measure electromagnetic fields in free-space or inside cavities. The measurement accuracy of these probes is determined as a function of frequency for three different measurement configurations. The effect of mutual coupling between two identical probes in close proximity is also presented as a function of the separation distance between the probes. The far- field voltage response of the probes is determined for an incident plane wave. The effect of placing the probes in a cavity on the measurement accuracy of the probes is determined.!9