Compact quasi-optical focusing system for a 94 GHz FMCW radar

Author

Klenner, Mathias ; Zech, Christian ; Hulsmann, A. ; Schlechtweg, Michael ; Ambacher, Oliver

Author_Institution

Fraunhofer Inst. for Appl. Solid State Phys., Freiburg im Breisgau, Germany

fYear

2014

fDate

16-18 June 2014

Firstpage

1

Lastpage

3

Abstract

In this paper we discuss the design of a portable, low-cost focusing system based on compact dielectric lenses and its suitability for the use in a wide band 94 GHz FMCW Radar for civil safety applications. A Vivaldi antenna transmits the Radar signal directly into a dielectric cone in order to control the aperture angle. By using an additional lens system, the signal can be focused at targets in the range of several meters. Dielectric properties and dispersion of different materials have been investigated at W-band frequencies to optimize the lenses within the systems based on quasi-optical ray tracing models.

Keywords

CW radar; FM radar; millimetre wave radar; radar signal processing; FMCW radar; Vivaldi antenna; W-band frequencies; civil safety applications; compact dielectric lenses; compact quasi-optical focusing system; frequency 94 GHz; quasi-optical ray tracing models; radar signal; Dielectric measurement; Dielectrics; Focusing; Lenses; Materials; Radar; Radar antennas; FMCW Radar; W-band frequencies; material characterization; millimeter waves; quasi-optical focusing system;

fLanguage

English

Publisher

ieee

Conference_Titel

Radar Symposium (IRS), 2014 15th International

Conference_Location

Gdansk

Print_ISBN

978-617-607-552-3

Type

conf

DOI

10.1109/IRS.2014.6869291

Filename

6869291