Title :
Capacitively Loaded Loop as Basic Element of Negative Permeability Meta-material
Author :
Hrabar, Silvio ; Eres, Zoran ; Bartolic, Juraj
Author_Institution :
Department of Radiocommunications and Microwave Engineering, University of Zagreb, Unska 17, Zagreb, HR-10000, Croatia, e-mail: Silvio.Hrabar@fer.hr
Abstract :
A simple one-dimensional meta-material which exhibits negative permeability within a finite frequency band is proposed in this paper. Instead of recently introduced split-ring resonators, this structure comprises an array of the capacitively loaded small loop antennas. Due to resonant behaviour of the antenna current, intensity of the magnetic field of the incoming plane wave may be locally decreased yielding a stop-band with negative effective permeability. Theoretical analysis was verified by measurements of the transmission coefficient of experimental structures in free space and in rectangular waveguide, in 10 GHz frequency band. The developed structure was also combined with previously reported negative permittivity wire structure and left-handed (backward wave) properties were observed.
Keywords :
Antenna arrays; Antenna measurements; Extraterrestrial measurements; Frequency measurement; Loaded antennas; Magnetic analysis; Magnetic field measurement; Magnetic resonance; Permeability; Permittivity measurement;
Conference_Titel :
Microwave Conference, 2002. 32nd European
Conference_Location :
Milan, Italy
DOI :
10.1109/EUMA.2002.339288