A high-gain lens antenna based on transformation optics

Author

Aghanejad, I. ; Abiri, Habibollah ; Yahaghi, Alireza ; Ramezani, Reza

Author_Institution

Sch. of Electr. & Comput. Eng., Shiraz Univ., Shiraz, Iran

fYear

2012

fDate

12-13 Nov. 2012

Firstpage

1

Lastpage

4

Abstract

Transformation of space coordinates can be used as a convenient tool for producing a controlled electromagnetic field pattern. In this paper, we apply a quasi-conformal coordinate transformation to a Maxwell fish-eye lens to design a lens antenna with high gain and low sidelobes, which can be realized by isotropic graded refractive index (GRIN) materials. Using proper simplifying techniques, the designed lens can be made by non-resonant metamaterials or non-magnetic dielectrics having wide frequency band and low losses. The simulation results validate the advantages of the proposed lens antenna.

Keywords

dielectric materials; lens antennas; metamaterial antennas; refractive index; GRIN material; Maxwell fish-eye lens; antenna sidelobe; electromagnetic field pattern; high-gain lens antenna; isotropic graded refractive index; lens antenna design; nonmagnetic dielectrics; nonresonant metamaterial; quasiconformal coordinate transformation; space coordinates; transformation optics; Dispersion; Horn antennas; Lenses; Metamaterials; gradient-index metamaterials; lens antenna; transformation optics;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation Conference (LAPC), 2012 Loughborough

Conference_Location

Loughborough

Print_ISBN

978-1-4673-2218-8

Electronic_ISBN

978-1-4673-2219-5

Type

conf

DOI

10.1109/LAPC.2012.6402990

Filename

6402990