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Lenses and reflectors are common devices in manipulating electromagnetic (EM) wave propagation and are largely utilized in radiation and receiving systems of electromagnetic engineering. The recently proposed significant concept of transformation electromagnetics provided an effective tool to design devices that could control the EM wave with desired ray traces. In this presentation, we will demonstrate...
Reflectors are common structures utilized in antenna system to obtain specific directive radiation or to enhance antenna gain. It is quite desirable to construct reflectors with planar or low-profile features in many applications. In this paper, we present the design of two kinds of low-profile planar electromagnetic wave reflectors based on the transformation optics. By employing simple linear coordinate...
Hash tables are widely used in network applications, as they can achieve O(1) query, insert, and delete operations at moderate loads. However, at high loads, collisions are prevalent in the table, which increases the access time and induces non-deterministic performance. Slow rates and non-determinism can considerably hurt the performance and scalability of hash tables in the multi-threaded parallel...
Transformation electromagnetics provided an effective tool to design devices that could control the electromagnetic wave with desired ray traces. However, the resulted material constitutive parameters for these devices are mostly inhomogeneous and anisotropic, which usually rely on large number of precisely defined sub-wavelength artificial structures, or metamaterials. In this paper, we show that...
In this paper, we present the design of two kinds of low-profile planar electromagnetic wave reflectors based on the transformation optics. By employing simple linear coordinate transformations, the planar reflectors can be achieved with dielectric cover constructed with homogeneous birefringent dielectric media, which reduces the complexity of practical realization. The proposed designs have been...
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