Electro-Geometrical Sensitivity Analysis of Electromagnetic Cavity BP-NGD Equalization

• Published in: IEEE journal on multiscale and multiphysics computational techniques Vol. 9; pp. 118 - 128
• Main Authors: Ravelo, Blaise, Du, Hongyu, Fontgalland, Glauco, Wan, Fayu
• Format: Journal Article
• Language: English
• Published: Piscataway IEEE 2024; The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
• Subjects: Circuit design; Cross correlation; Delays; Electric components; electro-thermo-geometrical approach; electromagnetic (EM) cavity; Electromagnetic compatibility; electromagnetic compatibility (EMC) application; Electrothermal effects; Equalization; Feasibility studies; Group delay; Mathematical models; Negative group delay (NGD); Reduction; Resonance; resonance equalization; Resonant frequency; RLC circuits; Scattering parameters; Sensitivity analysis; Signal integrity; signal integrity (SI); Time domain analysis; Topology
• ISSN: 2379-8815; 2379-8815
• DOI: 10.1109/JMMCT.2024.3367604

This article considers an electro-thermo-geometrical Multiphysics analysis of electromagnetic compatibility (EMC) resonance problem solution by using bandpass (BP) type negative group delay (NGD) equalization method. The rectangular cavity electric model based on EMC frequency domain S-parameter analysis is introduced. The unfamiliar BP-NGD function is specified in order to size the lumped electrical components of the suitable RLC-network based topology. The BP-NGD equalization principle is described including the Multiphysics synoptic analysis by means of electro- thermo-geometrical approach of the problem. The BP-NGD equalization methodology is proposed. The feasibility study of the EMC resonance equalization method is validated by considering a proof-of-concept constituted by 232.9×28×3.8 cm-size rectangular cavity. The BP-NGD active circuit is designed as equalizer by using RLC-series network. The EMC solution is verified by the BP-NGD POC specified by −4 ns NGD value at 0.644 MHz center frequency stating resonance effect reduction with 1-dB flatness. Furthermore, time-domain signal integrity (SI) analysis confirms the EMC cavity resonance resolution by showing output delay, over/under shoot reduction and also input-output cross correlation improvement from 89% to 99%.