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Waveguide Manufacturing Technologies for Next-Generation Millimeter-Wave Antennas.

Lucas Polo-López1,2, Pablo Sanchez-Olivares1,3, Eduardo García-Marín1

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Summary

This study presents novel waveguide antennas for next-generation millimeter-wave communication systems. Prototypes manufactured using advanced techniques demonstrate competitive performance up to 40 GHz.

Keywords:
millimeter-wave deviceswaveguide manufacturing by direct metal laser sinteringwaveguide manufacturing by stereolithographywaveguide manufacturing by subtractive machining

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Area of Science:

  • Electrical Engineering
  • Antenna Theory
  • Microwave Engineering

Background:

  • Next-generation communication systems require advanced antenna solutions for the millimeter-wave (mmWave) band.
  • High-precision manufacturing is critical for achieving desired performance at mmWave frequencies due to tight tolerances.

Purpose of the Study:

  • To present novel waveguide-based antenna designs for millimeter-wave communication.
  • To explore the application of state-of-the-art subtractive and additive manufacturing techniques for antenna fabrication.
  • To demonstrate competitive performance of manufactured prototypes up to 40 GHz.

Main Methods:

  • Design and fabrication of diverse waveguide antenna prototypes, including monopulse antennas, tunable phase shifters for reconfigurable arrays, and conformal array antennas.
  • Utilization of advanced manufacturing techniques such as high-precision milling, electrical discharge machining, direct metal laser sintering, and stereolithography with spray metallization.
  • Validation of antenna performance at millimeter-wave frequencies.

Main Results:

  • Successful manufacturing of waveguide antenna prototypes using a combination of subtractive and additive techniques.
  • Demonstration of competitive performance for the presented antenna designs in the millimeter-wave band, extending up to 40 GHz.
  • Integration of key components like comparator networks, mode converters, and phase shifters for advanced functionalities.

Conclusions:

  • State-of-the-art manufacturing techniques enable the realization of complex waveguide antennas for mmWave applications.
  • The presented waveguide antenna designs offer promising solutions for future communication systems.
  • Achieved performance validates the design approaches and manufacturing processes for millimeter-wave frequencies.