Using Reflections in a Meander Line Turn of Two Segments for Suppressing UWB Excitations

The article shows the possibility of suppressing ultra-wideband (UWB) pulse effects in structures using the example of a meander line of two segments with different cross-sectional parameters. The proposed structures suppress UWB excitations by their modal decomposition and reflection. As a result of preliminary simulations, we chose two tracing options. The first one uses alignment of the magnitudes of the main interfering modes and their reflections from the junction of the segments. The second option uses simultaneous arrival and mutual compensation of the main and reflected components of interference. The obtained conditions allowed choosing optimal geometric parameters and implementing both structures. The structures were simulated using two approaches: quasi-static and electrodynamic; their results demonstrated good consistency. The first structure attenuates the interference impact by about 3.5 times, and the second by 3.9 times. The calculated eye diagrams allowed evaluating the integrity of useful signals when a pseudo-random binary bit sequence (PRBS) was propagating through the structures. The second structure was found more preferable because it provides higher attenuation rates and is less harmful to the useful signal at higher bit rates. Finally, an example of proposed approach is given.