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Related Concept Videos

Transmission Line Design Considerations01:23

Transmission Line Design Considerations

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Aluminum has become the material of choice for overhead transmission lines, surpassing copper due to its abundance and cost-effectiveness. The most prevalent type is the aluminum conductor, steel-reinforced (ACSR), which combines aluminum strands around a steel core. Other variants include all-aluminum conductors (AAC), all-aluminum alloy conductors (AAAC), aluminum conductor alloy-reinforced (ACAR), and aluminum-clad steel conductors. Advanced designs, such as aluminum conductors with steel...
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Using Microwave and Macroscopic Samples of Dielectric Solids to Study the Photonic Properties of Disordered Photonic Bandgap Materials
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A 26.2:1 Bandwidth Ultra-Wideband Low-Profile Tightly Coupled Dipole Array with Integrated Feed Network.

Bailin Deng1,2, Yu Yang1, Xiuyuan Xu1,2

  • 1Institute of Applied Electronics, China Academy of Engineering Physics, Mianyang 621907, China.

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|September 19, 2025
PubMed
Summary

A novel tightly coupled dipole array (TCDA) antenna achieves a 26.2:1 bandwidth from 0.20-5.23 GHz. This wideband antenna design simplifies feeding and reduces profile height for improved performance.

Keywords:
dipole antennasfrequency selective surfaces (FSS)ultra-wideband antennas

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Area of Science:

  • Electrical Engineering
  • Antenna Theory and Design

Background:

  • Traditional antennas often struggle with achieving wide bandwidths and low profiles simultaneously.
  • Short-circuiting effects from antenna floors can limit operational frequency ranges.

Purpose of the Study:

  • To present a novel tightly coupled dipole array (TCDA) antenna with significantly enhanced bandwidth.
  • To reduce the complexity and profile height of the TCDA antenna.
  • To demonstrate improved directivity and beam scanning capabilities.

Main Methods:

  • Integration of a dual-stopband resistive frequency selective surface (RFSS) to mitigate short-circuiting.
  • Application of a specially integrated feed network to reduce complexity and height.
  • Utilizing simulation and experimental validation to verify performance.

Main Results:

  • Achieved a 26.2:1 bandwidth (VSWR < 3) covering 0.20-5.23 GHz.
  • Eliminated short-circuit points at critical frequencies using the RFSS.
  • Reduced antenna profile height to 0.05 λlow.
  • Demonstrated good directivity and beam scanning potential.

Conclusions:

  • The novel TCDA with RFSS offers an extremely wide bandwidth, surpassing previous designs.
  • The integrated feed network simplifies the antenna structure and reduces its profile.
  • The designed antenna shows significant improvements in gain, bandwidth, and height reduction.