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In this paper, based on the inverse transformation optics and Maxwell's equation, a metasurface is designed, which can transformed the incident plane wave into four circularly polarized beams with specific angles. After simplification and approximation, we realize the metasurface by constructing the structure of 3-layered Jerusalem crosses in the three-dimensional structure. The design method has...
In this letter, the substrate of a microstrip antenna is chosen as the transformation medium. Using complex transformation optics, a standing-wave current distribution along the circumference of a circular patch is transformed into a uniform traveling current distribution instead, thus generating perfectly circularly polarized waves. This letter provides a novel way of designing the microstrip antenna...
In this letter, we show by the theoretical analysis and computer simulation that the polarization of microstrip antenna can be changed using metamaterial with homogeneous constitutive parameters by applying the transformation optics approach, which is used to design the invisible cloak. We demonstrate that, the distribution of electric field between patch and ground-plane will be altered by filling...
Although the analysis of electromagnetic sources transformation under the theory of transformation optics has been widely discussed in many literatures, there are few discussions about actual antennas in the context of coordinate transformation. In this paper, we deduce the proper feeding formulation which is excited upon antennas according to the transformation method of ideal electromagnetic sources,...
In this paper, we propose a new way to design a spherical conformal array antenna using the idea of transformation optics. Based on electromagnetic source transformation, a physically linear array antenna can be transformed into a spherical conformal array antenna. Simulation results verify the realization of a spherical conformal array antenna with particular directivity through beam shaping to the...
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