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Broadband Flexible Microstrip Antenna Array with Conformal Load-Bearing Structure.

Can Tang1,2, Hongxing Zheng1,2, Ziwei Li1,2

  • 1State Key Laboratory of Reliability and Intelligence of Electrical Equipment, Hebei University of Technology, Tianjin 300132, China.

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Summary
This summary is machine-generated.

This study introduces a novel conformal antenna array that integrates load-bearing capabilities with broadband electromagnetic performance. The innovative design maintains excellent performance across various bending states, outperforming traditional structures.

Keywords:
broadbandconformal load-bearing structuremechanical testmicrostrip antenna array

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Area of Science:

  • Electromagnetics and Antenna Engineering
  • Materials Science and Structural Engineering

Background:

  • Conformal antennas require robust mechanical properties for practical applications.
  • Existing load-bearing antenna structures often compromise electromagnetic performance.
  • Broadband operation is crucial for many advanced communication systems.

Purpose of the Study:

  • To develop a conformal antenna array with enhanced load-bearing capacity and broadband electromagnetic characteristics.
  • To integrate antenna functionality with structural integrity using a novel layered design.
  • To improve the accuracy and efficiency of simulation models for conformal antennas.

Main Methods:

  • A broadband microstrip antenna array was designed using flexible substrate and honeycomb core layers.
  • An equivalent model for the honeycomb core layer was established to improve simulation accuracy.
  • The antenna array was fabricated and tested in flat and various bent configurations (30°, 60°, 90°).

Main Results:

  • The proposed antenna array achieved a relative bandwidth of 20.68% in the flat state (11.67-13.76 GHz and 14.33-14.83 GHz).
  • Under bending conditions, bandwidths of 24.16% (30°), 23.82% (60°), and 23.12% (90°) were maintained.
  • The integrated structure demonstrated superior mechanical load-bearing performance compared to traditional designs.

Conclusions:

  • The novel conformal antenna array successfully combines load-bearing capability with broadband electromagnetic performance.
  • The established equivalent model enhances simulation efficiency and accuracy for conformal antenna design.
  • The proposed structure offers a promising solution for applications requiring robust and versatile conformal antennas.