Accession Number:

ADA175460

Title:

High-Speed Pulse Propagation in Integrated Circuits.

Descriptive Note:

Final rept.,

Corporate Author:

TUFTS UNIV MEDFORD MA DEPT OF ELECTRICAL ENGINEERING

Personal Author(s):

Report Date:

1986-10-31

Pagination or Media Count:

46.0

Abstract:

This report summarizes important research results related to signal propagation, matching, interference, and coupling in very-high-speed integrated circuits. Complete analytical formulas for the propagation of voltage, current and power flow along a signal path excited by a voltage step input are given for three different distributed-circuit path models. Optimum input voltage pulse shapes are derived. Nominal resistance is defined and used to predict peak instantaneous path currents. Exact expressions are given for the surface electromagnetic field induced by a plane wave or electromagnetic pulse incident on an integrated circuit. The complex reflection coefficient is also given. Cross impulse and step responses due to capacitive and inductive coupling between signal paths are derived. An analysis of current moment excitation of the substrate of the three-layer integrated circuit geometry predicts both a surface wave and lateral wave that radiate outward along the substrate potentially causing coupling and interference. Approximate analytical expressions for these waves are given. Keywords include VNSIC, Interconnects, distributed circuits, pulse propagation, time-domain analysis, coupling, crosstalk, interference, matching, nominal resistance, EMP, reflection coefficient, surface waves, and lateral waves.

Subject Categories:

  • Line, Surface and Bulk Acoustic Wave Devices
  • Electricity and Magnetism

Distribution Statement:

APPROVED FOR PUBLIC RELEASE