Active switched antenna array for 77 GHz digital beamforming radar

Author

Feil, Peter ; Chaloun, Tobias

Author_Institution

Inst. of Microwave Tech., Univ. of Ulm, Ulm, Germany

fYear

2011

fDate

11-15 April 2011

Firstpage

2951

Lastpage

2953

Abstract

Imaging radars incorporating digital beamforming (DBF) typically require a uniform linear antenna array (ULA). However, using a large number of parallel receivers increases system complexity and cost. A switched antenna array can provide a similar performance at a lower expense. This paper describes an active switched antenna array with 32 integrated planar patch antennas illuminating a cylindrical lens. The array can be operated over a frequency range from 73 GHz-81 GHz. Together with a broadband FMCW frontend (Frequency Modulated Continuous Wave) a DBF radar was implemented. The design of the array is presented together with measurement results.

Keywords

CW radar; FM radar; active antenna arrays; array signal processing; microstrip antennas; radar imaging; DBF radar; active switched antenna array; broadband FMCW frontend; cylindrical lens; digital beamforming radar; frequency 73 GHz to 81 GHz; frequency 77 GHz; frequency modulated continuous wave; imaging radars; integrated planar patch antennas; parallel receivers; system complexity; uniform linear antenna array; Antenna arrays; Antenna measurements; Arrays; Lenses; Patch antennas; Radar imaging; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Antennas and Propagation (EUCAP), Proceedings of the 5th European Conference on

Conference_Location

Rome

Print_ISBN

978-1-4577-0250-1

Type

conf

Filename

5782197