Simulation-Assisted Efficient Computation of the Dispersion Diagram of Periodic Structures: A Comprehensive Overview With Applications to Filters, Leaky-Wave Antennas and Metasurfaces

2020 ◽  
pp. 0-0 ◽  
Author(s):  
Francisco Mesa ◽  
Guido Valerio ◽  
Raul Rodriguez-Berral ◽  
Oscar Quevedo-Teruel
Keyword(s):  
Periodic Structures ◽  
Efficient Computation ◽  
Leaky Wave ◽  
Comprehensive Overview ◽  
Dispersion Diagram

scholarly journals On the Computation of the Dispersion Diagram of Symmetric One-Dimensionally Periodic Structures

Symmetry ◽  
2018 ◽  
Vol 10 (8) ◽  
pp. 307 ◽  
Author(s):  
Francisco Mesa ◽  
Raúl Rodríguez-Berral ◽  
Francisco Medina
Keyword(s):  
Periodic Structures ◽  
Network Models ◽  
General Purpose ◽  
Critical Discussion ◽  
Simulation Software ◽  
Dispersion Diagram ◽  
Full Wave ◽  
Unit Cells ◽  
Relevant Role ◽  
Finite Sections

A critical discussion on the computation of the dispersion diagram of electromagnetic guiding/radiating structures with one-dimensional periodicity using general-purpose electromagnetic simulation software is presented in this work. In these methods, full-wave simulations of finite sections of the periodic structure are combined with appropriate simplifying network models. In particular, we analyze the advantages and limitations of two different combined methods, with emphasis on the determination of their range of validity. Our discussion is complemented with several selected numerical examples in order to show the most relevant aspects that a potential user of these methods should be aware of. Special attention is paid to the relevant role played by the high-order coupling between adjacent unit cells and between the two halves of unit cells exhibiting reflection, inversion, and glide symmetries.

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