Zouganelis, Georgios and Budimir, Djuradj (2007) Effective dielectric constant and design of sliced Lüneberg lens. Microwave and Optical Technology Letters, 49 (10). pp. 2332-2337. ISSN 0895-2477Full text not available from this repository.
In this article, a design of Lüneberg lens with slices made from low loss dielectric material with hemispherical air-holes drilled appropriately on the top and bottom surface of each of them is presented. A formula to estimate the values of radial dependent effective dielectric constant of air-holes dielectric composite material is suggested. The estimated values are compared with the ones calculated from finite difference time domain method electromagnetic simulations of a periodic lattice of spherical and cylindrical air-holes embedded in a dielectric slab using Nicolson-Ross method. Calculation of S-parameters and near field of lens with hemispherical air-holes under an incident plane wave, using estimated effective constants by the suggested formula are compared with ones using precise theoretical values of dielectric constants.
|Subjects:||University of Westminster > Science and Technology > Electronics and Computer Science, School of (No longer in use)|
|Depositing User:||Miss Nina Watts|
|Date Deposited:||24 Jun 2008 14:42|
|Last Modified:||16 Oct 2009 08:43|
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