Equalization of digital/mixed-signal disturbances with an negative group delay circuit

Neutralization of LC- and RC-Disturbances with Left-Handed and NGD Effects

“…T im e Normalized unit step response y(t, ζ<1 After application of the synthesis relations proposed in [57], the hybrid circuit comprised of surface-mount chip (SMC) passive components R, L and C displayed in Fig. 17 was manufactured.…”

“…Based on the NGD function, different applications for the design of innovative oscillator [47], balun [48], phase shifters [49][50][51], pulse compression generator [52] and feed forward amplifier [53][54] were developed in electronic areas. In addition, further applications for the reduction of signal delays were also proposed based on the neutralization of the disturbing effects in the electronic systems [51] [55][56][57]. The neutralization technique proposed in [57] is interesting for reducing the degradation caused the electrical interconnections in the printed circuit board (PCB) and microelectronic systems instead of the technique based on the use of repeaters [58].…”

“…In addition, further applications for the reduction of signal delays were also proposed based on the neutralization of the disturbing effects in the electronic systems [51] [55][56][57]. The neutralization technique proposed in [57] is interesting for reducing the degradation caused the electrical interconnections in the printed circuit board (PCB) and microelectronic systems instead of the technique based on the use of repeaters [58]. With the increase of the operating data speed, the microelectronic signals propagating through the PCB interconnections and wireless propagation channels are victim of undesired degradations [59][60][61][62][63][64].…”

“…In circuit approach, this later can be usually modelled by RC-, LCand RLC-networks. To reduce these effects, an efficient technique enabling to annihilate the RC-delay was also introduced by using base band NGD circuits [57]. It was shown that the RC-effect for high-speed applications can be cancelled [51].…”

Synthesis of RF Circuits with Negative Time Delay by Using LNA

“…Then, different applications of the NGD function were proposed in the literature. One of the most published applications are the design of independent frequency NGD phase shifter [28][29][30][31] and broadband active balun [32], feed forward amplifier [33][34], microwave circuit with pulse compression [35] and also the reduction of the propagation delay in the microelectronic interconnect with the NGD equalization technique [36][37][38][39][40]. However, because of the transistor access-matching difficulties, the complexity of the biasing networks and the output voltage sign inversion compared to the input is found with certain NGD topologies as proposed in [14][15][16][17][18].…”