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Stopband Analysis Using Dispersion Diagram for Two-Dimensional Electromagnetic Bandgap Structures in Printed Circuit Boards

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4 Author(s)
Yoshitaka Toyota ; Dept. of Commun. Network Eng, Okayama Univ. ; Arif Ege Engin ; Tae Hong Kim ; Madhavan Swaminathan

Electromagnetic bandgap (EBG) structures that provide an excellent isolation within the stopband are extremely effective in suppressing propagation of simultaneous switching noise on parallel power planes. However, a scattering parameter measurement and full-wave electromagnetic simulation for their entire structure are costly and time consuming. This letter presents a two-dimensional dispersion-diagram analysis based on a unit-cell network of EBG structures by extending a well-known dispersion-diagram analysis of one-dimensional infinite periodic structures. The approach is extremely effective in computing stopband frequencies and provides the stopbands with good agreement to the measured results

Published in:

IEEE Microwave and Wireless Components Letters  (Volume:16 ,  Issue: 12 )