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Efficient Full-Wave Analysis of Multilayer Interconnection Structures Using a Novel Domain Decomposition–Model-Order Reduction Method

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2 Author(s)
Shih-Hao Lee ; Univ. of Illinois at Urbana-Champaign, Urbana ; Jian-Ming Jin

A novel domain decomposition-model-order reduction method is proposed for efficient full-wave finite-element analysis of multilayer interconnection structures. By considering the special properties of a multilayer structure, the field at each nonmetallic interface (via-holes or other apertures) can be approximated with a modal expansion to establish a boundary condition and decompose the entire computational domain into separate layers. The coupling between each dielectric layer is taken into account through a mode-matching process. To further speed up the computation in each layer, the solution space projection, which is a multipoint model-order reduction method, is integrated into the aforementioned domain decomposition method to form a complete solution algorithm. With the aid of reduced-order models, the domain decomposition process at each frequency is accelerated and a fast broadband analysis is achieved. This domain decomposition-model-order reduction method, called approximate modal interface-solution space projection, is implemented using the finite-element method and validated through several examples, which demonstrate the efficiency of the method in both the computation time and memory usage.

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Microwave Theory and Techniques, IEEE Transactions on  (Volume:56 ,  Issue: 1 )