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In this paper, we propose to use the concept of mantle cloaking in order to decrease the mutual coupling between strip dipole antennas at low-terahertz frequencies. Here, we show that by wrapping the antennas with a properly tuned elliptically shaped graphene monolayer, the electromagnetic interaction between the antennas can be suppressed considerably, and the radiation patterns can be restored....
In this paper, we propose a novel approach based on the mantle cloaking method to reduce the mutual coupling between closely spaced planar antennas. We consider two microstrip-fed monopole antennas resonating at slightly different frequencies and show that by covering each antenna with a conformal elliptical metasurface formed by conformal and confocal printed arrays of sub-wavelength periodic elements,...
In this paper, we propose a novel approach based on the mantle cloaking method to reduce the mutual coupling between strip dipole antennas located in close electrical proximity to each other. We consider two strip dipole antennas resonating at slightly different frequencies separated by a short distance. We show that by covering each strip dipole with a conformal elliptical metasurface, the antennas...
In this paper, we propose a novel approach to reduce the mutual coupling between two closely spaced strip dipole antennas with the elliptical metasurfaces formed by conformal and confocal printed arrays of subwavelength periodic elements. We show that by covering each strip with the metasurface cloak, the antennas become invisible to each other and their radiation patterns are restored as if they...
Here, we propose the analytical framework for electromagnetic cloaking of dielectric and metallic elliptical cylinders with a nanostructured graphene metasurface at low-terahertz frequencies. The analysis is based on the solution of the scattering problem in terms of elliptical waves given by the radial and angular Mathieu functions with the sheet impedance boundary conditions at the graphene metasurface,...
In this paper, we build on our previous work of cloaking with a metasurface and present an analytical framework for the analysis of electromagnetic cloaking of dielectric and metallic elliptical cylinders with graphene monolayer and a nanostructured graphene patch array at low-terahertz frequencies, and also with conformal printed and slotted arrays of sub-wavelength periodic elements at microwave...
In this paper, we present a conformal mantle cloak design in order to realize the invisibility of dielectric and conducting elliptical cylinders using 2-D sub-wavelength metallic meshes and patches. Although the electromagnetic wave scattering of an elliptical cylinder is pertinent to the angle of incidence, it is shown that the cloak design is robust for any incident angle. The scattering behavior...
In this paper, we present a graphene-based mantle cloak structure for both dielectric and conducting elliptical cylinders. The mantle cloak design is realized by means of a patterned metasurface formed by periodic sub-wavelength graphene nanopatches. Although the scattering behavior of an ellipse is dependent on the angle of incidence, it is shown that the cloak design is robust for any incident angle...
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