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Microstrip-Fed 3D-Printed H-Sectorial Horn Phased Array.

Ivan Zhou1, Lluís Pradell1, José Maria Villegas2

  • 1School of Telecommunication Engineering, Universitat Politècnica de Catalunya, 08034 Barcelona, Spain.

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|July 27, 2022
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Summary
This summary is machine-generated.

This study presents a 3D-printed phased array antenna with a novel waveguide-to-microstrip transition. The antenna operates across the LMDS and K bands, demonstrating efficient performance for wireless communication applications.

Keywords:
3D antennas5G millimeter-wave antennashornslow-loss antennasprinted antennas

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Area of Science:

  • Electromagnetics and Antenna Engineering
  • Microwave and Millimeter-Wave Technology
  • 3D Printing and Additive Manufacturing

Background:

  • The demand for high-performance antennas in wireless communication systems, particularly for broadband applications, necessitates innovative designs.
  • Existing antenna solutions often face limitations in bandwidth, efficiency, and manufacturing complexity.
  • The integration of 3D printing offers a pathway to creating complex antenna structures with enhanced performance characteristics.

Purpose of the Study:

  • To design, fabricate, and characterize a 3D-printed phased array antenna.
  • To develop and integrate an ultra-wideband rectangular-waveguide-to-microstrip-line transition.
  • To evaluate the antenna's performance across the LMDS and K bands, including gain, efficiency, and beam scanning capabilities.

Main Methods:

  • A phased array antenna was designed and 3D-printed, incorporating four H-Sectorial horn antennas.
  • An ultra-wideband transition utilizing three overlapped transversal patches was developed to connect the waveguide to the microstrip line.
  • Antenna performance was measured, including insertion loss, fractional bandwidth, gain, and efficiency at various scanning angles.

Main Results:

  • The phased array achieved very low insertion losses (0.30 dB to 0.67 dB) over the 23.5-30.4 GHz operational band.
  • A measured fractional bandwidth of 20.8% (24.75-30.3 GHz) was achieved for the phased array including the transition.
  • Maximum gain of 15.2 dB and efficiency of 78.5% were recorded at the broadside direction (0°), with performance varying for different scanning angles.

Conclusions:

  • The developed 3D-printed phased array antenna with its integrated transition demonstrates excellent performance over the LMDS and K bands.
  • The novel waveguide-to-microstrip transition enables ultra-wideband operation with minimal signal loss.
  • This technology holds significant potential for advanced wireless communication systems requiring high gain and beam agility.