Scattering by cavity-backed antennas on a circular cylinder
نویسندگان
چکیده
منابع مشابه
Low Frequency Scattering by Circular Dielectric Cylinder: New Polarizability Tensor
This paper considers the low-frequency scattering by a circular dielectric cylinder and modifies the exact polarizability tensor to extend the valid region of the known low-frequency solution. When compared to the traditional formulation, the proposed solution is shown to be valid for cylinders with a higher dielectric constant and larger radius. key words: low frequency scattering, polarizabil...
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Abstract—A novel circularly polarized cavity-backed antenna (CBA) excited by crossed bowtie dipoles is presented in this paper. It is fed by a transition from a microstrip line to doubleslot lines. The crossed dipoles consist of a top-loaded triangular and a filleted rhombic to achieve the required input impedance relations for circularly polarized radiation. After optimization, a simulated 3-d...
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Electromagnetic scattering by dielectric cylindrical objects is an important research subject and has been considered by many authors for over three decades. Among the analytical models, to solve the dielectric cylinders with finite length, a typical model is the generalized Rayleigh-Gans (GRG) approximation. It approximates the induced current in a finite cylinder by that in an infinitely long...
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The generalized dual series solution to the scattering of an E-polarized (E-pol) plane wave from an infinite circular cylinder having ?n infinite axial slot and enclosing an infinite concentric impedance cylinder is presented. This solufion explicitly exhibits the correct edge behavior, and it can handle cylinders that are either electrically small or large without special considerations. The a...
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The emergence of nihility as an electromagnetic medium [1] can be attributed to the rather extraordinary developments on negatively refracting materials during this decade [2, 3]. Much of the impetus for this development has been provided by the prospect of the so–called perfect lens [4]. Any perfect lens in the present context is required to simulate nihility [5, 6]. The relative permittivity ...
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ژورنال
عنوان ژورنال: IEEE Transactions on Antennas and Propagation
سال: 1994
ISSN: 0018-926X
DOI: 10.1109/8.318648