Leaky Coplanar Waveguide Antenna with Tunable Beamwidth and Radiation Angle Using Composite Right/Left-handed Materials
A new field of physics has appeared with the emergence of materials known as Left handed materials (LHM) or metamaterials. These materials show very particular characteristics. Their index of refraction has a negative value, which results in the reversal of Snells law. Whereas, in traditional material the Poynting vector S always forms a right-handed triplet with E and H (S=E∧H). In the left handed media, the Poynting vector S and the wave vector K are in opposite directions. Thus, the wave moves in the direction opposite to the direction of the energy flow: phase speed and group speed are anti-parallel. Therefore, a left-handed media is artificial and does not exist in nature. Indeed, when these materials are inserted into a guided wave device, one obtains the backward-wave effect. The goal of this work is to study more in details this physical phenomenon. To undertake this study, this paper presents also the design of a 10 GHz beam-scanning CPW-Antenna fabricated on metamaterial support.
Abdelaziz Hamdi Ammar B.Kouki Abdelaziz Samet
Ecole National dIngénieurs de Sousse,Technopole de Sousse,Sahloul,Tunisia (E)cole de Technologie Supérieure 1100,rue Notre-Dame O.Montréal (Qc) H3C 1K3,Canada Ecole Polytechnique de Tunisie,B.P.743,La Marsa,Tunis 2070,Tunisia
国际会议
Progress in Electromagnetics Research Symposium 2009(2009年电磁学研究新进展学术研讨会)(PIERS 2009)
北京
英文
935-941
2009-03-23（万方平台首次上网日期，不代表论文的发表时间）