Abstract
Abstract Illusion devices have important applications in military fields because they can change the scattering pattern of objects. In this paper, the illusion conditions in the electro-quasi-static (EQS) field when transient excitation is applied are first deduced. According to the conditions derived, the illusion in the EQS field can be realized. Three representative cases are considered, one for the invisibility situation and two for the illusion situation. Moreover, the evolution of potential with time and its relationship with the excitation is determined. The result has been verified by analytical solution and finite element simulation. Finally, the possible realization of the illusion is discussed by equating the illusion device to the resistance-capacitance network. We also discuss the potential improvement of the device by using reconfigurable components in the device.
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