A tray based Rotman lens array with beamforming in two dimensions for millimeter-wave radar

Author

Schulwitz, Lora ; Mortazawi, Amir

Author_Institution

Michigan R&D Center, Gen. Dynamics, Ypsilanti, MI, USA

fYear

2010

fDate

12-15 Oct. 2010

Firstpage

850

Lastpage

853

Abstract

A tray based Rotman lens array is presented, which consists of several low-profile Rotman lenses with beam control circuitry, miniature dual-polarized horn antenna arrays, and tray selection circuitry for elevation beamforming. The array achieves broad bandwidth from 34 to 40 GHz, and beamforming in two dimensions is realized. In azimuth, switched beamforming is implemented with the Rotman lens beam control circuitry. In elevation, adaptive beamforming using MUSIC (multiple signal classification) is implemented with the individual Rotman lens trays. A proof of concept beamforming experiment was conducted, where the locations of targets within a three dimensional space were detected with 2.5 cm range resolution.

Keywords

antenna arrays; array signal processing; horn antennas; millimetre wave radar; signal classification; MUSIC; Rotman lens beam control circuitry; adaptive beamforming; elevation beamforming; millimeter-wave radar; miniature dual-polarized horn antenna arrays; multiple signal classification; switched beamforming; tray based Rotman lens array; tray selection circuitry; Antenna arrays; Array signal processing; Arrays; Azimuth; Bandwidth; Lenses; Switches;

fLanguage

English

Publisher

ieee

Conference_Titel

Phased Array Systems and Technology (ARRAY), 2010 IEEE International Symposium on

Conference_Location

Waltham, MA

Print_ISBN

978-1-4244-5127-2

Electronic_ISBN

978-1-4244-5128-9

Type

conf

DOI

10.1109/ARRAY.2010.5613264

Filename

5613264