Full-wave analysis of high-speed interconnects using complex frequency hopping

被引:20
|
作者
Achar, R [1 ]
Nakhla, MS [1 ]
Zhang, QJ [1 ]
机构
[1] Carleton Univ, Dept Elect, Ottawa, ON K1S 5B6, Canada
基金
加拿大自然科学与工程研究理事会;
关键词
circuit simulation; distributed networks; full-wave analysis; high-speed interconnects; model-order reduction; moment-matching techniques;
D O I
10.1109/43.728920
中图分类号
TP3 [计算技术、计算机技术];
学科分类号
0812 ;
摘要
Accurate simulation of large interconnect networks has become a necessity to address signal-integrity issues in current high-speed very-large-scale-integration designs. To accurately characterize a dispersive system of interconnects at higher frequencies, a full-wave analysis is required. However, conventional circuit simulation of interconnects with full-wave models is extremely CPU expensive. Recently published moment-matching techniques provide a generalized approach to lumped/distributed circuit response approximations. However, these techniques are based on quasi-transverse electromagnetic mode (TEM) assumption and have no mechanism to handle full-wave models. In this paper, we present a new method to extend model-reduction techniques for simulation of full-wave models. The following three new results are presented in this paper: 1) a generalized method to combine modal results from a full-wave analysis into circuit simulators; 2) a new algorithm for moment generation involving full-wave models; 3) deviations associated with quasi-TEM approximations compared to full-wave models at higher frequencies. The proposed algorithm yields a speed up of I to 2 orders of magnitude for a comparable accuracy with conventional techniques. Tn addition, the proposed method can be used for a mixed simulation involving distributed models with frequency dependent/independent RLCG parameters, full-wave interconnect models and measured subnetworks along With nonlinear terminations.
引用
收藏
页码:997 / 1016
页数:20
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