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MOM/GA-Based Virtual Array for Radar Systems.

Kamel Sultan1,2, Haythem Abdullah1, Esmat Abdallah1

  • 1Electronics Research Institute, El-Nozha Elgededa, Cairo 12622, Egypt.

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|February 5, 2020
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Summary
This summary is machine-generated.

This study presents a novel virtual antenna array (VAA) for automotive radar, enabling simultaneous medium and long-range detection. This innovative antenna array offers improved efficiency and gain with a simplified design for 24 GHz applications.

Keywords:
automotive radarflat shoulder shapelong range radarmedium range radarplanar antenna arraypower dividervirtual antenna array

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Antenna Theory

Background:

  • Automotive radar systems require advanced antenna arrays for enhanced detection capabilities.
  • Existing planar antenna arrays (PAA) face challenges including large size, low isolation, and limited coverage.
  • The need for efficient and high-gain antenna solutions for dual-range radar applications is critical.

Purpose of the Study:

  • To introduce a novel virtual antenna array (VAA) synthesis for radar systems.
  • To enable simultaneous support for medium-range radar (MRR) and long-range radar (LRR) with distinct beam widths.
  • To address limitations of traditional antenna arrays in automotive radar applications.

Main Methods:

  • Application of the virtual antenna array (VAA) concept to scanning and fixed radiation pattern arrays.
  • Utilizing the method of moments/genetic algorithm (MoM/GA) for antenna array synthesis.
  • Analytical and experimental verification of the proposed VAA concept.

Main Results:

  • Designed two orthogonal 16-element VAAs operating from 23.55 to 24.7 GHz.
  • Achieved a flat-shoulder shape (FSS) radiation pattern suitable for MRR/LRR.
  • Demonstrated good agreement between simulated and experimentally measured results.
  • The VAA offers minimum elements, simple feeding, high efficiency, and gain, albeit with a larger aperture size.

Conclusions:

  • The proposed virtual antenna array (VAA) effectively addresses key challenges in automotive radar antenna design.
  • The VAA provides a viable solution for achieving dual-range detection with improved performance characteristics.
  • This novel antenna array is well-suited for 24 GHz automotive radar applications, enhancing resolution and coverage range.