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Updated: Jul 5, 2025

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Dual-Polarized Metal Vivaldi Array Using Independent Structural Elements.

Bo Chen1, Wei Wang1, Juan Liu1

  • 1Beijing Institute of Remote Sensing Equipment, Beijing 100854, China.

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Summary
This summary is machine-generated.

A novel dual-polarized Vivaldi phased array antenna (6-18 GHz) offers flexible, arbitrary shapes for enhanced communication systems. This wideband antenna technology demonstrates excellent beam-scanning and high aperture efficiency.

Keywords:
Vivaldidual-polarizedphased array

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Area of Science:

  • Electrical Engineering
  • Antenna Theory
  • Electromagnetics

Background:

  • Wideband antennas are crucial for modern communication systems.
  • Phased array antennas enable beam steering capabilities.
  • Vivaldi antennas offer broad bandwidth but can face challenges in array integration.

Purpose of the Study:

  • To propose a dual-polarized metal Vivaldi phased array antenna with independent structural elements.
  • To enable construction of arrays with arbitrary shapes and scales.
  • To eliminate resonance caused by structural discontinuities for broadband performance.

Main Methods:

  • Design of flexible and complementary Vivaldi elements.
  • Critical study and elimination of resonance from structural discontinuities.
  • Fabrication and testing of an 8x8 dual-polarized array prototype with active transmit/receive (T/R) modules.

Main Results:

  • The array prototype demonstrated excellent beam-scanning characteristics in both E-plane and H-plane without grating lobes.
  • Measured gain ranged from 15.2 to 24.8 dBi across the 6-18 GHz band.
  • Measured aperture efficiencies exceeded 91% over the entire operating band.

Conclusions:

  • The proposed dual-polarized Vivaldi phased array antenna achieves wideband operation with high performance.
  • The flexible element design allows for arbitrary array shapes and scales.
  • This technology can significantly increase communication system capacity.