Innovative Theory of Low-Pass NGD via-Hole-Ground Circuit

IEEE Access

Wenceslas Rahajandraibe¹  Preeti Thakur²  Sebastien Lallechere³  Atul Thakur⁴  Fayu Wan⁵  Blaise Ravelo⁵ 

[1] Clermont Auvergne (UCA), Clermont-Ferrand, France;CNRS, Aix-Marseille University, University of Toulon, IM2NP UMR7334, Marseille, France;CNRS, Institut Pascal, SIGMA Clermont, Universit&x00E9;Physics Department, Amity University Haryana, Gurgaon, India;School of Electronic and Information Engineering, Nanjing University of Information Science and Technology (NUIST), Nanjing, China;

关键词: Analytical modelling;    cylindrical via;    low-pass negative group delay (NGD);    microstrip circuit;    via-hole ground;   

DOI  :  10.1109/ACCESS.2020.3009286

来源: DOAJ

【 摘 要 】

The via ground (GND) structure constitutes one of the most useful elements for designing high performance printed circuit boards (PCBs). The electrical interconnections with vias become key regular solutions for the implementation of various electronic functions. However, so far, the vias are never being used for designing negative group delay (NGD) circuit. To answer this curious question, an original study on the design feasibility of low-pass NGD function with via ground is introduced in the present paper. After the topological description, the NGD analysis in function of the via parameters is established. The design equations allowing to synthesize the via in function of NGD function specifications are formulated. The developed NGD theory is verified with comparisons between calculations and simulations with a commercial tool. As expected, NGD value in order of hundred-picoseconds over hundred-megahertz cut-off frequencies is obtained with good agreement between the theoretical model and simulation. Furthermore, time domain analyses confirm that the via NGD structure enables to generate output signals in time-advance of arbitrary waveform input signals presenting limited bandwidth.

【 授权许可】

Unknown