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Polar Coordinates: Problem Solving01:27

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Smart optical cross dipole nanoantenna with multibeam pattern.

Seyyed Mohammad Mehdi Moshiri1, Najmeh Nozhat2

  • 1Department of Electrical Engineering, Shiraz University of Technology, 7155713876, Shiraz, Iran.

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This study introduces a novel optical multibeam nano-antenna using graphene for dynamic beam control. The proposed design achieves tunable radiation patterns and directivity, enabling smart wireless links.

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Area of Science:

  • Photonics and Nanotechnology
  • Metamaterials and Plasmonics

Background:

  • Traditional antennas face limitations in beam steering and pattern control.
  • Graphene's tunable optical properties offer potential for advanced antenna designs.

Purpose of the Study:

  • To propose and analyze an optical smart multibeam cross dipole nano-antenna.
  • To demonstrate dynamic control over radiation patterns using graphene.
  • To achieve high directivity for unidirectional and multidirectional radiation.

Main Methods:

  • Designing a cross dipole nano-antenna with V-shaped coupled elements.
  • Incorporating graphene's tunable absorption characteristics.
  • Utilizing different arrangements of circular sectors as directors.
  • Simulating antenna performance at a wavelength of 1550 nm.

Main Results:

  • Achieved maximum directivity of 8.79 dBi for a unidirectional pattern.
  • Obtained bi- and quad-directional patterns with directivities of 8.63 and 8.42 dBi.
  • Demonstrated dynamic beam shifting (±13°) using graphene's chemical potential.
  • Modified patterns to uni- and bi-directional with directivities of 10.1 and 9.54 dBi.

Conclusions:

  • The proposed graphene-based nano-antenna offers dynamic, tunable control over radiation patterns.
  • This technology enables the creation of smart multipath wireless links with controlled receiver accessibility.
  • Graphene's unique properties are crucial for achieving reconfigurable antenna functionalities.