Realizing Antenna Arrays with Huygens’ Metasurface Pairs Based on a Moment-Method-Like Design
| Autor: | George V. Eleftheriades, Ayman H. Dorrah, Vasileios G. Ataloglou |
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| Rok vydání: | 2020 |
| Předmět: |
Electromagnetic field
Physics Beamforming 020208 electrical & electronic engineering Phase (waves) Physics::Optics 020206 networking & telecommunications Point set registration 02 engineering and technology Topology Chebyshev filter Antenna array Amplitude 0202 electrical engineering electronic engineering information engineering Antenna (radio) |
| Zdroj: | 2020 14th European Conference on Antennas and Propagation (EuCAP). |
| DOI: | 10.23919/eucap48036.2020.9135590 |
| Popis: | Huygens’ metasurfaces have demonstrated great potential at manipulating electromagnetic fields at will. While omega-bianisotropy has allowed to design a single reflectionless metasurface for transformations that conserve local power, many applications, such as antenna beamforming, require control of both the amplitude and the phase of the transmitted fields. Pairs of reflectionless omega-bianisotropic metasurfaces have been proposed to break the condition of local power conservation. However, constraints on the minimum propagation length between the two metasurfaces, often lead to bulky designs. Here, an alternative method of designing a metasurface pair for arbitrary control of the amplitude and phase of the output fields is presented. The method relies on a power-based point matching process at the two metasurfaces and allows multiple reflections in the region between them. The usefulness of multiple reflections on the compactness of the metasurface pair is investigated through the design of a Chebyshev antenna array featuring a single feedpoint. |
| Databáze: | OpenAIRE |
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