Beam Scanning Using Flat Transformation Electromagnetic Focusing Lenses

Author

Kwon, Do-Hoon ; Werner, Douglas H.

Author_Institution

Dept. of Electr. & Comput. Eng., Univ. of Massachusetts Amherst, Amherst, MA, USA

Volume

8

fYear

2009

fDate

7/1/1905 12:00:00 AM

Firstpage

1115

Lastpage

1118

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 excitations of individual antennas in a linear array configuration result in switched beams. Full-wave numerical simulations are performed, and the results for 2D lens configurations with line sources are provided.

Keywords

beam steering; electromagnetic wave propagation; focal planes; focusing; lenses; linear antenna arrays; numerical analysis; 2D lens configurations; antenna radiator array; beam scanning method; beam switching method; directive beam; flat transformation electromagnetic focusing lenses; focal plane; full-wave numerical simulations; lens surface; linear array configuration; Beam scanning; electromagnetic propagation in anisotropic media; graded index optics; transformation electromagnetics;

fLanguage

English

Journal_Title

Antennas and Wireless Propagation Letters, IEEE

Publisher

ieee

ISSN

1536-1225

Type

jour

DOI

10.1109/LAWP.2009.2033619

Filename

5276827