Low-cost near-field probe for simultaneous E and H measurement withanalog optical link

摘要

A low-cost near-field probe based on a double-loaded loop that cansimultaneously measure electric and magnetic field components ispresented. The probe is implemented on a printed circuit board (PCB) andis connected to the receiver by an analog optical link. The signalprocessing circuits and the LED-based emitters are placed close to theloop outputs, on the same PCB. The effects of the printed circuit boardimplementation on the antenna behavior, such as conductor's shape andpresence of a dielectric inside the loop, are analyzed. Furtherconstruction details such as power management are described andcalibration details are also provided