Title :
Unambiguous determination of constitutive parameters of a metamaterial slab
Author :
Barroso, Joaquim J. ; Hasar, Ugur C.
Author_Institution :
Assoc. Plasma Lab., Nat. Inst. for Space Res., São José dos Campos, Brazil
fDate :
Oct. 29 2011-Nov. 1 2011
Abstract :
The constitutive parameters of a metamaterial slab showing negative refractive index over the 9-12 GHz frequency range are unambiguously retrieved from complex scattering parameters upon using the phase unwrapping method. Such a technique relies on properly adding to the phase of the complex transmission coefficient a stepwise function constructed from the resonance frequencies at which the phase of the transmission coefficient reaches ∓ π.
Keywords :
S-parameters; electromagnetic wave propagation; metamaterials; permittivity measurement; refractive index; complex scattering parameters; constitutive parameters; metamaterial slab; negative refractive index; phase unwrapping method; stepwise function; unambiguous determination; Metamaterials; Permeability; Permittivity; Reflection; Scattering parameters; Slabs; Constitutive parameters; metamaterials; phase ambiguity; scattering parameters; transmission coefficient; transmission/reflection measurement methods;
Conference_Titel :
Microwave & Optoelectronics Conference (IMOC), 2011 SBMO/IEEE MTT-S International
Conference_Location :
Natal
Print_ISBN :
978-1-4577-1662-1
DOI :
10.1109/IMOC.2011.6169261
