Investigations of Electromagnetic Vision at WiFi Frequencies

The visual human perception of electromagnetic waves is limited to the so-called visible spectrum. Artificial extension of the human vision, e.g., via infrared cameras, is possible. Due to the expected low resolution at large wavelengths, however, this is rarely done in the low GHz regime. We investigate the quality of images obtained by simply turning a directive antenna across a scene. The procedure is straight forward and can be compared to how the lens in the human eye creates an image on the retina. Simulation data of an exemplary domestic indoor scenario illustrates how mono-frequency vision of WiFi signals might look like.