Resonance Effect Reduction with Bandpass Negative Group Delay Function

Blaise Ravelo , Yajian Gan (1) , Fayu Wan , Wenceslas Rahajandraibe (1) , Sébastien Lalléchère (2) , Zhifei Xu

1 IM2NP - Institut des Matériaux, de Microélectronique et des Nanosciences de Provence
2 UCA - Université Clermont Auvergne

This paper introduces an original reduction method of resonance effect dispersion by using bandpass negative group delay (NGD) function. The resonance dispersion transfer function (TF) model is parametrized by lumped RLC circuit. The canonical parameters of NGD passive cell are originally formulated as a function of the resonance dispersion specifications. The NGD resonance method feasibility is validated with commercial tool frequency domain simulations. Proof-of-concept circuits constituted by passive RLC-resonant and NGD passive ones are considered. The results confirm an obvious reduction of peak resonance magnitudes and GDs from (18-dB, 10-ns) to better than (2-dB, 2-ns) are realized in the NGD bandwidth of about 80 MHz. The NGD method robustness is also investigated with simultaneous and individual relative variations of the dispersion parameters.

Mots clés: Correction method; Bandpass negative group delay (NGD); Concave dispersion; Synthesis relation

Domaines: Sciences de l'ingénieur [physics]

Blaise Ravelo, Yajian Gan, Fayu Wan, Wenceslas Rahajandraibe, Sébastien Lalléchère, et al.. Resonance Effect Reduction with Bandpass Negative Group Delay Function. IEEE Transactions on Circuits and Systems II: Express Briefs, 2021, 68 (7), pp.2364-2368. ⟨10.1109/TCSII.2021.3059813⟩. ⟨hal-03606636⟩