DocumentCode :
2729532
Title :
Leaky Coplanar Waveguide Antenna with Tunable Beamwidth and Radiation Angle Using Composite Right/Left-Handed Materials
Author :
Hamdi, Abdelaziz ; Kouki, Ammar B. ; Samet, Abdelaziz
Author_Institution :
Technopole de Sousse, Ecole Nat. d´´Ing. de Sousse, Sahloul
fYear :
2009
fDate :
1-7 Feb. 2009
Firstpage :
152
Lastpage :
156
Abstract :
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 Snellpsilas law. Whereas, in traditional material the Poynting vector S always forms a right-handed triplet with E and H (S = E nland 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.
Keywords :
coplanar waveguide components; metamaterials; waveguide antennas; CPW-antenna; Snell law; backward-wave effect; composite right-left-handed materials; energy flow; frequency 10 GHz; leaky coplanar waveguide antenna; left-handed media; metamaterials; radiation angle; refraction index; tunable beamwidth; Capacitance; Coplanar waveguides; Dielectrics; Electromagnetic refraction; Frequency; Inductance; Metamaterials; Permeability; Permittivity; Refractive index; Antennas; CPW; Full Wave simulation; Metamaterials;
fLanguage :
English
Publisher :
ieee
Conference_Titel :
Quantum, Nano and Micro Technologies, 2009. ICQNM '09. Third International Conference on
Conference_Location :
Cancun
Print_ISBN :
978-1-4244-3349-0
Electronic_ISBN :
978-0-7695-3524-1
Type :
conf
DOI :
10.1109/ICQNM.2009.34
Filename :
4782942
Link To Document :
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