Title: Effective Medium Model for Multilayer Dielectric with Periodic Metal Inclusion
Speaker: Teng Zhao, ECpE Graduate Student
Abstract: Multilayer structures have extensive applications in the modern electronic industry, from micron-scale semiconductor chips to radio frequency front-end and millimeter-wave systems. It is usually time consuming and memory intensive to perform EM simulations of such structures using traditional numerical methods, such as finite difference or finite element methods. The effective medium model can simplify the problem and reduce the total computational cost.
Effective media model based on the same reflection and transmission coefficients are applied to retrieve the effective permittivity and permeability of the multilayer medium with periodic metal structures. An integral equation approach combining equivalence principle algorithm and connection scheme (EPACS) is developed to solve reflection and transmission coefficients of the structure. The EPACS can handle doubly periodic structures with finite or semi-infinite number of layers. It avoids the sophisticated multilayered periodic Green’s function but only involves with the periodic Green’s function. Numerical and experiment results are provided to validate the approach.