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A high-performance sub-THz planar antenna array for THz sensing and imaging applications.

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Researchers developed a cost-effective terahertz (THz) antenna using printed circuit board technology and machine learning. This antenna design achieves high gain and bandwidth, paving the way for terabits per second wireless communication.

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Area of Science:

  • Electrical Engineering
  • Electromagnetics
  • Wireless Communication

Background:

  • The terahertz (THz) spectral region (0.1-3 THz) offers significant potential for next-generation wireless technologies due to its high channel capacities.
  • Design and fabrication complexities of THz devices, particularly antennas, present major challenges for realizing this potential.

Purpose of the Study:

  • To introduce a cost-effective, easily fabricated, and reproducible sub-terahertz (sub-THz) antenna design.
  • To address the physical layer bottlenecks in THz communication systems.

Main Methods:

  • Utilized single-layer planar printed circuit board technology for antenna fabrication.
  • Incorporated quasi-cross slots and employed machine learning-assisted global optimization techniques.
  • Validated antenna performance through numerical simulations and experimental THz framework (100-110 GHz).

Main Results:

  • Achieved a peak gain of 13.90 dBi.
  • Demonstrated less than 1 dB gain variation across the 100-110 GHz band.
  • Proposed antenna design is cost-effective and reproducible.

Conclusions:

  • The developed sub-THz antenna design overcomes fabrication challenges.
  • The antenna shows potential for enabling terabits per second data rates.
  • The design is suitable for futuristic high-resolution short-range THz imaging applications.