Multivariate Analysis of Multiconductor Transmission Line with Combinational Pulses in Time Response

The paper presents a quasi-static simulation of symmetric multiconductor transmission lines (MCTL) with asymmetrical terminations: reflection symmetric meander lines and MCTL with a reference conductor in the form of side polygons. These structures can be used to protect equipment against ultra-wideband interference of short duration. In these MCTLs at connection of two conductors at the far end by a bridge in the time response appear combinational pulses with delays not multiple to per-unit-length delays of modes. The study analyzes the influence of varying cross-section parameters on the characteristics of these structures, including the maximum output amplitude (Umax), the per-unit-length delays of each mode, and the delays of combinational pulses. The study reveals that varying the parameters primarily affects the propagation speed of the main modes, potentially resulting in a rearrangement of their positions. Consequently, combinational pulses, whose delays depend on the mode delays, may arrive at different speeds relative to each other in the process of changing the parameters. The superposition of the pulses leads to a sharp increase in the Umax value. It is demonstrated that previous optimization efforts are ineffective when combinational pulses are present, as they occur between pulses of the main modes, leading to reduced time intervals. These results offer valuable insights for leveraging the resource of combinational pulses in optimization endeavors.