A 77-GHz FMCW MIMO Radar Employing a Non-Uniform 2D Antenna Array and Substrate Integrated Waveguides

Simon P. Hehenberger, Alexander Yarovoy, Andreas Stelzer

Research output: Chapter in Book/Conference proceedings/Edited volumeConference contributionScientificpeer-review

Abstract

In state-of-the-art frequency-modulated continuous-wave (FMCW) multiple-input multiple-output (MIMO) radar systems, antennas are usually designed based on microstrip technology. They are arranged in uniform arrays such that the synthesized virtual array maximizes the angular resolution. This paper presents the design of a 77-GHz FMCW MIMO radar frontend with antennas and feed structures based on substrate integrated waveguides (SIW) and non-uniform planar arrays optimized for sidelobe suppression. A design procedure for MIMO arrays with particular emphasis on sidelobe level suppression based on convex optimization is presented, and a novel transition from differential microstrip line to SIW is utilized to feed the transmit antennas. Measurements show the successful SIW and antenna design, as well as a sidelobe level of 40 dB within the field of view (FOV) of the radar system.

Original languageEnglish
Title of host publication2020 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility (ICMIM)
Place of PublicationPiscataway
PublisherIEEE
Number of pages4
ISBN (Electronic)978-1-7281-6755-8
ISBN (Print)978-1-7281-6756-5
DOIs
Publication statusPublished - 2020
Event2020 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, ICMIM 2020 - Linz, Austria
Duration: 23 Nov 202023 Nov 2020

Conference

Conference2020 IEEE MTT-S International Conference on Microwaves for Intelligent Mobility, ICMIM 2020
CountryAustria
CityLinz
Period23/11/2023/11/20

Keywords

  • antenna design
  • Array processing
  • FMCW radar
  • MIMO radar
  • radar system
  • slot array antenna
  • substrate integrated waveguide (SIW)
  • waveguide transitions

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