EBG identification by the Reflection Phase Method, Design for Application WiFi Antenna
France Telecom R&D, La Turbie
DOI: 10.1109/EUCAP.2006.4584919 Conference: Antennas and Propagation, 2006. EuCAP 2006. First European Conference on
In a first part of this article, we present the method based on the reflection phase diagram for the identification of the EBG (electromagnetic band gap) structures. The procedure consists to plot the diagram of phase of the wave reflected by EBG structure excited by an incident wave, in the simplest case, plane and normal upon the structure. The forbidden band corresponds to the frequency band where the phase of the reflected wave is equal to 0plusmn45deg, criterion of Sievenpiper, or to 90plusmn45deg, criterion of Rahmat-Samii. In the filtered frequency band, the structure behaves as a magnetic conductor : a High-impedance surface. The EBG structure studied and designed is a Mushroom-like (D. Sievenpiper et al., 1999). The performances of this structure are modelled using the HFSS code. In the second part, we illustrate the application aimed by the design of this structure.
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