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Fast Reduction Algorithms in the Frequency-Domain Layered Finite Element Method for the Electromagnetic Analysis of Large-Scale High-Frequency Integrated Circuits

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2 Author(s)
Feng Sheng ; Sch. of Electr. & Comput. Eng., Purdue Univ., West Lafayette, IN, USA ; Dan Jiao

In this paper, fast algorithms are proposed for an efficient reduction of a 3-D layered system matrix to a 2-D layered one in the framework of the frequency-domain layered finite element method. These algorithms include: 1) an effective preconditioner P that can converge the iterative solution of the volume-unknown-based matrix equation in a few iterations; 2) a fast direct computation of P -1 in linear complexity in both CPU run time and memory consumption; and 3) a fast evaluation of P -1 b in linear complexity, with b being an arbitrary vector. With these fast algorithms, the volume-unknown-based matrix equation is solved in linear complexity with a small constant in front of the number of unknowns, and hence significantly reducing the complexity of the 3-D to 2-D reduction. The algorithms are rigorous without making any approximation. They apply to any arbitrarily-shaped multilayer structure. Numerical and experimental results are shown to demonstrate the accuracy and efficiency of the proposed algorithms.

Published in:

IEEE Transactions on Advanced Packaging  (Volume:33 ,  Issue: 1 )