Resonance Effect Reduction with Bandpass Negative Group Delay Function
Résumé
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.
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