Design of elliptical electromagnetic bandgap structures for directive antennas

Halim Boutayeb (1) , Tayeb Denidni (1) , Abdelrazik Sebak , Larbi Talbi

1 EMT-INRS - Énergie Matériaux Télécommunications - INRS

This paper presents the design of directive antennas for wireless communication systems by incorporating Elliptical Electromagnetic Bandgap (EEBG) materials composed of metallic wires. These structures have an elliptical shape and are radially periodic, and they are excited at their center using a monopole antenna. Defects were introduced and designed in the EEBG structure to open electromagnetic localized modes inside its frequency bandgap, and then to create a directive beam. An antenna prototype, operating at DCS, PCS and UMTS bands, was designed, fabricated, and tested. A good agreement is obtained between simulated and experimental results for both return loss and radiation patterns.

Mots clés: Electromagnetic band gap (EBG); elliptical structures; metallic wires; periodic structures; wireless communications

Domaines: Electromagnétisme

Halim Boutayeb, Tayeb Denidni, Abdelrazik Sebak, Larbi Talbi. Design of elliptical electromagnetic bandgap structures for directive antennas. IEEE Antennas and Wireless Propagation Letters, 2005, 4, pp. 93-96. ⟨10.1109/LAWP.2005.845912⟩. ⟨hal-00149262⟩