1D Electromagnetic Band Gap Analysis and Applications

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Author(s): Abdelmoumen Kaabal (Abdelmalek Essaâdi University, Morocco), Mustapha El Halaoui (Abdelmalek Essaâdi University, Morocco), Saida Ahyoud (Abdelmalek Essaâdi University, Morocco)and Adel Asselman (Abdelmalek Essaâdi University, Morocco)
Copyright: 2019
Pages: 45
Source title: Emerging Innovations in Microwave and Antenna Engineering
Source Author(s)/Editor(s): Jamal Zbitou (University of Hassan 1st, Morocco)and Ahmed Errkik (University of Hassan 1st, Morocco)
DOI: 10.4018/978-1-5225-7539-9.ch005

Keywords: Electrical and Electronics Engineering / Electrical Engineering / Engineering Science Reference / Science & Engineering

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Abstract

In this chapter, a detailed study of the one-dimension electromagnetic band gap (1D-EBG) structures and their application in a directional antenna design are presented. To improve the ability and analyze and understand the behavior of 1D-EBG, three techniques of analysis are developed. The results show that the periodicity of the dielectric permittivity makes it possible to stop the waves propagation in certain frequency bands. A comparison between the different methods shows an excellent agreement. An evolution of the transmission coefficient of a structure consisting of six layers with a cavity of thickness equal a wavelength in the middle of the structure, shows that there is a peak of transmission which is formed at the center frequency of the band gap and reflects a resonance phenomenon. This phenomenon of frequency filtering is exploited for the design of a directive EBG antenna by introducing an excitation to the cavity center.

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