Time-Domain Electromagnetic Wave Propagation in MultilayeredMedia

多层介质中的时域电磁波传播

• 批准号: 8620029
• 负责人: Jin-Au Kong
• 金额: --
• 依托单位: Massachusetts Institute of Technology
• 依托单位国家: 美国
• 项目类别: Continuing grant
• 财政年份: 1987
• 资助国家: 美国
• 起止时间: 1987-08-01 至 1991-01-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=8620029&HistoricalAwards=false
• 关键词: Time; Domain; Electromagnetic; Wave; Propagation

Recent progress in microelectronic circuit packaging technologies has begun to require a thorough understanding of time-domain electromagnetic wave propagation in multilayered media. Several issues in the theory and applications of the time-domain electromagnetic wave propagation in multilayered media will be addressed: (1) the applications of the double-deformation technique to transient radiation and coupling problems; (2) transient propagation in anisotropic media; (3) wave propagation along nonconventional transmission structures in integrated circuits; (4) signal distortion and electromagnetic scattering due to discontinuities in strip transmission lines; (5) crosstalk in three- dimensional integrated circuit packaging. Better physical interpretation can be sought for through the development of the double deformation technique, which is a wave-mode approach based on transform method. On the other hand, the direct time-domain formations such as the space-time domain integral equations, the method of characteristics, the finite-difference method, the transmission line matrix method help increase computation speed when early-time response is of main concern and will also be explored. Time domain analysis of electromagnetic wave propagation has gained much attention in place of frequency domain analysis because of various new applications. In very-large-scale integrated circuit design, multilayered structures are becoming more popular in light of their capability of achieving a more condensed package, yet the crosstalk problems caused by transient electromagnetic coupling have to be minimized. When activated with electromagnetic pulses, adjacent strips of transmission lines running in different directions or located at different heights can suffer from significant crosstalk. As the rise-time becomes shorter and the clock-rate higher, the circuit may be rendered inoperative because of excessive crosstalk. This research will focus on finding reliable and computationally efficient techniques to calculate the amount of crosstalk and radiation. One of the main goals will be to develop equivalent circuit models to facilitate computer-aided design.

微电子电路封装技术的最新进展已经开始要求对多层介质中的时域电磁波传播有透彻的了解。 讨论多层介质中时域电磁波传播的理论和应用中的几个问题：（1）双变形技术在瞬态辐射和耦合问题中的应用； (2)各向异性介质中的瞬态传播； (3) 波沿着集成电路中的非常规传输结构传播； (4)带状传输线不连续性导致的信号失真和电磁散射； (5)三维集成电路封装中的串扰。 通过双变形技术的发展，可以寻求更好的物理解释，这是一种基于变换方法的波模方法。 另一方面，空时域积分方程、特征法、有限差分法、传输线矩阵法等直接时域形式有助于提高早期响应时的计算速度，也将得到探索。 由于各种新的应用，电磁波传播的时域分析代替频域分析而受到广泛关注。 在超大规模集成电路设计中，多层结构因其能够实现更紧凑的封装而变得越来越流行，但必须尽量减少瞬态电磁耦合引起的串扰问题。 当用电磁脉冲激活时，沿不同方向运行或位于不同高度的相邻传输线条可能会遭受严重的串扰。 随着上升时间变短和时钟速率变高，电路可能会因串扰过多而无法工作。 这项研究将侧重于寻找可靠且计算高效的技术来计算串扰和辐射量。 主要目标之一是开发等效电路模型以促进计算机辅助设计。