@article{9a5f9b2c436347bda9c76d25b78345c1,
title = "Beam scanning using flat transformation electromagnetic focusing lenses",
abstract = "A beam scanning/switching method utilizing a transformation electromagnetics device is presented. A flat focusing lens based on the coordinate transformation approach is designed such that the field radiated by an antenna at the lens focus is transformed into a directive beam emitted normal to the lens surface. The main beam can be scanned by moving the antenna in the focal plane. Physical movement of the source or the lens can be avoided by placing an array of radiators in the focal plane. Selective excitationsof individual antennas inalinear array configuration result in switched beams. Full-wave numerical simulations are performed, and the results for 2D lens configurations with line sources are provided.",
author = "Kwon, {Do Hoon} and Werner, {Douglas H.}",
note = "Funding Information: Manuscript received August 05, 2009; revised September 01, 2009. First published October 02, 2009; current version published October 27, 2009. This work was supported in part by the Penn State MRSEC under NSF Grant DMR-0820404 and ARO-MURI Award 50342-PH-MUR. D.-H. Kwon is with Department of Electrical and Computer Engineering, University of Massachusetts Amherst, Amherst, MA 01003 USA (e-mail:
[email protected]). D. H. Werner is with Department of Electrical Engineering, The Pennsylvania State University, University Park, PA 16802 USA (e-mail:
[email protected]). Color versions of one or more of the figures in this letter are available online at http://ieeexplore.ieee.org. Digital Object Identifier 10.1109/LAWP.2009.2033619 Fig. 1. Coordinate transformation for the flat focusing lens design: (a) the original system, (b) the transformed system.",
year = "2009",
doi = "10.1109/LAWP.2009.2033619",
language = "English (US)",
volume = "8",
pages = "1115--1118",
journal = "IEEE Antennas and Wireless Propagation Letters",
issn = "1536-1225",
publisher = "Institute of Electrical and Electronics Engineers Inc.",
}