Numerical Study of Negative-Refractive Index Ferrite Waveguide

Authors Muin F. Ubeid1, Mohammed M. Shabat1, Mohammed O. Sid-Ahmed2

1 Department of Physics, Faculty of Science, Islamic University of Gaza, P.O. Box 108, Gaza, Gaza Strip, Palestinian Authority

2 Department of Physics, Faculty of Science, Sudan University of Science and Technology, The Republic of the Sudan

Issue Volume 4, Year 2012, Number 1
Dates Received 22 October 2011; revised manuscript received 26 February 2012; published online 14 March 2012
Citation Muin F. Ubeid, Mohammed M. Shabat, Mohammed O. Sid-Ahmed, J. Nano-Electron. Phys. 4 No 1, 01009 (2012)
PACS Number(s) 2.25Bs, 42.25.Dd, 42.25.Gy
Keywords Applied magnetic fields, Electromagnetic waves (3) , Ferromagnetic material (3) , Frequency (15) , Reflected power, Transmitted power.
Annotation Consider a magnetized ferrite-wire waveguide structure situated between two half free spaces. Ferrites to provide negative permeability and wire array to provide negative permittivity. The structure form left-handed material (LHM) with negative refractive index. The transmission of electromagnetic waves through the structure is investigated theoretically. Maxwell's equations are used to determine the electric and magnetic fields of the incident waves at each layer. Snell's law is applied and the boundary conditions are imposed at each layer interface to calculate the reflected and transmitted powers of the structure. Numerical results are illustrated to show the effect of frequency, applied magnetic fields, angle of incidence and LHM thickness on the mentioned powers. The analyzed results show that the transmission is very good when the permeability and permittivity of the structure are both simultaneously negative. The frequency band corresponding to this transmission can be tuned by changing the applied magnetic fields. The obtained results are in agreement with the law of conservation of energy.

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