Enhanced Modulation Degree of Leakage Wave Induced by IEMI via Nonlinear Circuit Elements

This paper proposes a method to improve the modulation degree of the leakage wave in the threat of electromagnetic information leakage induced by intentional electromagnetic interference. Since the leakage wave from the target device occurs with the same frequency as the continuous wave (CW), the modulation degree of the leakage wave is decreased. This paper shows that the propagation of two CWs to nonlinear circuit elements inside the device causes frequency conversion, generating the leakage wave with a frequency different from the injected CWs. This method prevents degradation in the accuracy of information extracted caused by decreased modulation degree of the leakage wave.