Four-Layer Reflection-Symmetric Structure in Common and Differential Modes

This paper investigates a four-layer reflection symmetric structure in common and differential modes. By using electrodynamic approach, the authors simulated S parameters and represented them into time responses in the Advanced Design System 2022. The study shows that the ultra-wideband pulses are decomposed into the sequence of pulses with lower amplitudes. To evaluate these pulses, the authors used N-norms. It was found that the MF under investigation allows significant attenuation of the ultra-wideband interference in both modes. Thus, the N
1
value for the differential mode decreased by 4.51 times, N
2
by 5.82 times, N
3
by 1.34 times, N
4
by 1.34 times, and N
5
by 2.64 times. For the common mode, N
1
decreased by 2.97 times, N
2
by 4.64 times, and N
5
by 1.7 times. The signal integrity analysis in differential mode demonstrated that structure under study may be used for protecting signal circuits against ultra-wideband interference.