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A frequency reconfigurable dipole antenna with solid-state plasma in silicon.

Da-Jin Kim1, Eon-Seok Jo2, Young-Kyun Cho3

  • 1School of Electrical Engineering, Korea Advanced Institute of Science and Technology, (KAIST) 291 Daehak-ro, Yuseong-gu, Daejeon, 34141, Republic of Korea.

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This study introduces a novel frequency reconfigurable dipole antenna using a silicon radiator activated by solid-state plasma. This innovative plasma antenna technology enables dynamic frequency tuning for advanced communication systems.

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Area of Science:

  • Electrical Engineering
  • Materials Science
  • Antenna Theory

Background:

  • Frequency reconfigurable antennas are crucial for dynamic communication environments.
  • Traditional reconfigurable antennas often face limitations in bandwidth and material properties.
  • Silicon has been underexplored as a tunable material for antenna applications.

Purpose of the Study:

  • To present a novel frequency reconfigurable dipole antenna utilizing a silicon radiator.
  • To demonstrate the feasibility of using solid-state plasma for antenna reconfiguration.
  • To provide design guidelines and fabrication insights for this plasma-based antenna.

Main Methods:

  • Fabrication of a dipole antenna incorporating a silicon radiator.
  • Activation of the silicon radiator using highly dense solid-state plasma via carrier injection into p-i-n diodes.
  • Characterization of antenna performance through measurements and simulations.

Main Results:

  • The plasma radiator effectively alters the dipole arm length, enabling frequency reconfiguration.
  • Achieved a tunable frequency range from 6.3 GHz to 4.9 GHz when plasma channels are activated.
  • Measured a tunable bandwidth of approximately 31%, comparable to conventional reconfigurable antennas.
  • Simulation results validate the experimental findings.

Conclusions:

  • Silicon, when integrated with plasma technology, emerges as a promising tunable material for frequency reconfigurable antennas.
  • The plasma-based reconfigurable antenna offers significant potential for dynamic communication applications.
  • This approach presents a viable alternative to traditional metal-based antennas.