A Printed Beam-Shifting Slab Designed Using Tensor Transmission-Line Metamaterials

Autor:	Gurkan Gok, Anthony Grbic
Rok vydání:	2013
Předmět:	Electromagnetic field Materials science Electromagnetics business.industry Isotropy Physics::Optics Metamaterial Physics::Classical Physics Split-ring resonator Optics Slab Tensor Electrical and Electronic Engineering business Transformation optics
Zdroj:	IEEE Transactions on Antennas and Propagation. 61:728-734
ISSN:	1558-2221 0018-926X
DOI:	10.1109/tap.2012.2226228
Popis:	We present the design and implementation of a beam-shifting slab (a transformation electromagnetics device) using tensor transmission-line metamaterials. A beam-shifting slab is an anisotropic, homogeneous and reflectionless slab which laterally displaces the electromagnetic field transmitted through it. The experimental beam-shifting slab consists of printed metamaterial unit cells exhibiting anisotropic effective material parameters, while the surrounding medium consists of printed isotropic unit cells. The measured and simulated field patterns within the beam-shifting slab and the surrounding media are compared and show excellent agreement. Simulation and experimental results demonstrate that radiation from a cylindrical source is shifted upward by 5.28 unit cells due to the presence of the beam-shifting slab. Furthermore, the wide-band frequency response of the slab is experimentally studied. The reported experimental results verify the theory behind tensor transmission-line metamaterials and demonstrate their utility in the design of transformation electromagnetics devices at microwave frequencies.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::c7ed3690c64b6f77eafd0b37fc430ecd https://doi.org/10.1109/tap.2012.2226228 Zobrazit plný text záznamu