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Millimeter-Wave Imaging System Based on Direct-Conversion Focal-Plane Array Receiver.

Sergey Korolyov1, Aleksandr Goryunov1, Ivan Illarionov2

  • 1Institute for Physics of Microstructures of the Russian Academy of Sciences, 603950 Nizhny Novgorod, Russia.

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Summary
This summary is machine-generated.

This study introduces an advanced millimeter-wave imaging technique using direct-conversion receivers for enhanced range and object detection. The new focal-plane array (FPA) system achieves up to 100m imaging range, improving upon traditional methods.

Keywords:
direct-conversion receiverfocal-plane array (FPA)frequency-modulated continuous-wave (FMCW) radarlow-barrier diodemillimeter-wave imaging

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Area of Science:

  • Engineering
  • Physics
  • Imaging Technology

Background:

  • Traditional focal-plane array (FPA) millimeter-wave imaging relies on direct-detection receivers.
  • Direct-detection receivers have limitations in sensitivity and range, restricting imaging capabilities.

Purpose of the Study:

  • To develop and experimentally validate a novel millimeter-wave imaging approach.
  • To enhance the maximum imaging range and introduce range-finding capabilities.
  • To demonstrate a practical direct-conversion FPA imaging system.

Main Methods:

  • Employed a direct-conversion array receiver with frequency-modulated continuous-wave (FMCW) radar.
  • Utilized novel, sensitive, low-barrier Mott diode-based receiving elements.
  • Developed and tested a 94 GHz 8x8 imaging system.

Main Results:

  • Achieved a maximum imaging range of up to 100 meters, significantly exceeding direct-detection systems.
  • Demonstrated the capability to obtain range information to objects.
  • Characterized angular and range resolution of the new imaging method.

Conclusions:

  • The direct-conversion FPA imaging technique offers superior sensitivity and extended range compared to direct-detection methods.
  • The developed system shows promise for long-range millimeter-wave cameras.
  • This technology is particularly suitable for robotic systems operating in adverse environmental conditions.