A 77-GHz FM/CW radar front-end with a low-profile low-loss printed antenna

Author

Menzel, Wolfgang ; Pilz, Dietmar ; Leberer, Ralf

Author_Institution

Microwave Tech. Dept., Ulm Univ., Germany

Volume

47

Issue

12

fYear

1999

fDate

12/1/1999 12:00:00 AM

Firstpage

2237

Lastpage

2241

Abstract

Design and results of a 77-GHz frequency-modulation/continuous-wave radar sensor based on a simple waveguide circuitry and a novel type of printed, low-profile, and low-loss antenna are presented. A Gunn voltage-controlled oscillator and a finline mixer act as transmitter and receiver, respectively, connected by two E-plane couplers. The folded reflector-type antenna consists of a printed slot array and another planar substrate, which, at the same time, provides twisting of the polarization and focusing of the incident wave. The performance of the radar is described, together with the initial results of a scanning of the antenna beam

Keywords

CW radar; FM radar; Gunn oscillators; fin line components; microstrip antenna arrays; millimetre wave antenna arrays; millimetre wave receivers; reflector antennas; road vehicle radar; slot antenna arrays; voltage-controlled oscillators; waveguide couplers; 77 GHz; E-plane couplers; FM/CW radar front-end; Gunn voltage-controlled oscillator; antenna beam scanning; finline mixer; focusing; folded reflector-type antenna; low-loss antenna; low-profile printed antenna; planar substrate; polarisation twisting; printed slot array; waveguide circuitry; Circuits; Couplers; Finline; Frequency; Gunn devices; Radar antennas; Reflector antennas; Slot antennas; Transmitters; Voltage-controlled oscillators;

fLanguage

English

Journal_Title

Microwave Theory and Techniques, IEEE Transactions on

Publisher

ieee

ISSN

0018-9480

Type

jour

DOI

10.1109/22.808965

Filename

808965