Accurate Experimental Field Mapping in the Close Vicinity of a Pyramidal Absorber Using the Monostatic Optically Modulated Scatterer Technique

The paper presents the application of an underrated tool, monostatic modulated scatterer technique (MST), for measuring electromagnetic field distribution in the vicinity of dielectric objects of complex shape. Monostatic MST, using optically modulated scatterers, allows field distribution to be measured with minimal distortion. A unique example has been shown for measuring the electromagnetic field distribution around the pyramidal absorber, as well as the measurement between its adjacent pyramids. The test results obtained were verified by computer simulation. Very good conformity of measurements and calculations was achieved. The influence of the finite size of the scattering probe on the accuracy of the determination of the measured field strength is also shown.