24 GHz automotive radar planar Luneburg lens

Author

Xue, L. ; Fusco, V.F.

Author_Institution

Inst. of Electron., Queen´´s Univ. of Belfast

Volume

1

Issue

3

fYear

2007

fDate

6/1/2007 12:00:00 AM

Firstpage

624

Lastpage

628

Abstract

A planar Luneburg lens whose permittivity distribution is modified by two types of hole density control in the central region and by dielectric thickness control in the edge region is reported. The lens was designed to operate at 24 GHz in Transverse Electromagnetic (TEM) mode. Experimental radiation patterns show good agreement with the simulation. The measured 3 dB beamwidth of the vertical polarised H-plane pattern is 5deg with 14 dB gain at 24 GHz for a 12.2lambda, 15.24 cm diameter lens, cross polar levels were below -30 dB. Its small size and lightweight, 53% of material is removed, and better than 20% bandwidth makes it useful for vehicular use in the 24 GHz unlicensed Industrial, Scientific, Medical (ISM) equipment band and for 24 GHz short range radar applications

Keywords

antenna radiation patterns; lens antennas; permittivity; planar antennas; radar antennas; road vehicle radar; 15.24 cm; 24 GHz; ISM band; TEM mode; automotive radar planar Luneburg lens; dielectric thickness control; hole density control; permittivity distribution; radiation patterns; short range radar; transverse electromagnetic mode; vertical polarised H-plane pattern;

fLanguage

English

Journal_Title

Microwaves, Antennas & Propagation, IET

Publisher

iet

ISSN

1751-8725

Type

jour

DOI

10.1049/iet-map:20050203

Filename

4232455