Solli Daniel, Chiao R Y, Hickmann J M
Department of Physics, University of California, Berkeley, California 94720-7300, USA.
Phys Rev E Stat Nonlin Soft Matter Phys. 2002 Nov;66(5 Pt 2):056601. doi: 10.1103/PhysRevE.66.056601. Epub 2002 Nov 12.
The causality principle does not forbid negative group delays of analytic signals in electronic circuits; in particular, the peak of a pulse can leave the exit port of a circuit before it enters the input port. Furthermore, pulse distortion for these "superluminal" analytic signals can be negligible in both the optical and electronic domains. Here we suggest a possible extension of these ideas to microelectronics. The underlying principle is that negative feedback can be used to produce negative group delays. Such negative group delays can be used to cancel out the positive group delays introduced by transistor latency, as well as the propagation delays due to the interconnections between transistors. Using this principle, it may be possible to speed up computer systems.
因果律并不禁止电子电路中解析信号出现负群延迟；特别是，脉冲的峰值可以在其进入输入端口之前就离开电路的输出端口。此外，对于这些“超光速”解析信号，在光学和电子领域中脉冲失真都可能微不足道。在此，我们提出将这些想法可能扩展到微电子学领域。其基本原理是，负反馈可用于产生负群延迟。这种负群延迟可用于抵消由晶体管延迟引入的正群延迟，以及由于晶体管之间互连而产生的传播延迟。利用这一原理，有可能加速计算机系统。
