Microwave Imaging Using a Disordered Cavity with a Dynamically Tunable Impedance Surface

Abstract

When coupled to a tuning mechanism, a disordered medium provides a powerful means for shaping electromagnetic waveforms. The authors leverage this functionality to conduct volumetric computational imaging: A deformed cavity is outfitted with tailored, irregular surfaces, and its microwave resonant modes are projected into an imaging domain to retrieve the scene's spatial information. This approach could be applied to biomedical imaging, security screening, or wireless power transfer or telecommunications.