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Multi-scale bullseye antennas.

G J Chaplain1, I R Hooper1, T A Starkey1

  • 1Electromagnetic and Acoustic Materials Group, Department of Physics and Astronomy, University of Exeter, Exeter EX4 4QL, UK.

Philosophical Transactions. Series A, Mathematical, Physical, and Engineering Sciences
|July 20, 2022
PubMed
Summary
This summary is machine-generated.

Researchers developed a multi-scale bullseye antenna to control microwaves. This novel antenna enables broadband beam-forming and near-field energy concentration using tailored diffraction techniques.

Keywords:
beam-formingdiffractionwaveguiding

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Area of Science:

  • Electromagnetics
  • Metamaterials
  • Antenna Engineering

Background:

  • Microwave manipulation requires advanced antenna designs.
  • Multi-scale structures offer unique wave interaction properties.

Purpose of the Study:

  • To design, simulate, and experimentally validate a multi-scale bullseye antenna.
  • To achieve broadband manipulation of microwaves.
  • To enable both far-field beam-forming and near-field energy concentration.

Main Methods:

  • Utilized multi-scale bullseye geometry.
  • Employed tailored diffraction at interfaces.
  • Simulated and experimentally characterized antenna performance.
  • Investigated microwave beam-forming and energy concentration.

Main Results:

  • Demonstrated broadband microwave manipulation.
  • Achieved far-field beam-forming through diffraction.
  • Enabled near-field energy concentration via overlapping diffracted beams.

Conclusions:

  • The multi-scale bullseye antenna effectively controls microwave propagation.
  • The design offers a novel approach for wave manipulation in complex media.