Microwave/digital signal correction with integrable NGD circuits

This paper presents a correction technique of microwave/digital signal integrity with a negative group delay (NGD) active circuit potentially integrable. A theoretical approach illustrating the functioning of the NGD topology is established. The method for synthesizing the NGD circuit in function of the signal degradation parameters is developed. The relevance of the technique is verified with a proof of concept showing the annihilation of RC-effects. It is demonstrated that corrections of high-speed mixed signals with 1-Gsym/s-rate is validated with simulations. Then, experimental results with 25-Msym/s-rate mixed signal tested with a prototype in hybrid technology confirm the feasibility of the technique proposed. In addition to the signal waveform reconstruction, reductions of the propagation delay and rise-/fall-time were also proved.