Reconfigurable and Scalable Slot-Ring Antenna Arrays

Technology #33753

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Xun Gong, Ph.D.
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Mahmoud Shirazi, Ph.D.
Tianjiao Li, Ph.D.
Patent Protection
US Patent US10283871B2
A Switchable-Frequency Slot-Ring Antenna Element for Designing a Reconfigurable Array
IEEE Antennas and Wireless Propagation Letters, vol. 17, no. 2, pp. 229-233, Feb. 2018, DOI: 10.1109/LAWP.2017.2781463

Key points

  • Can cover a wide frequency band range (at least 1:6) and is switchable between bands
  • Enables an antenna array without grating lobes
  • Exhibits polarization diversity and single-side radiation capability


Researchers at the University of Central Florida have developed a reconfigurable modular antenna array that can be programmed to operate over several different frequency bands while still using a common antenna aperture. The antenna and transmitter design work as a mix-and-match antenna array that is easily configurable and scalable to specific applications. This simplicity allows for an easily manufactured design that is capable of polarization diversity and single-side radiation over several bands. Thus, the technology can cover a wide frequency range without having to redesign the antenna system.

Technical Details

The invention comprises a reconfigurable antenna array and methods for reconfiguring the array. By using a slot-ring design and RF switches, the technology provides frequency reconfigurability and polarization diversity without grating lobes. It can operate in S band (2-4 GHz), C band (4-8 GHz), and X band (8-12 GHz) and is switchable in between the bands. With varactors, the antenna array can cover the frequency range by continuously tuning the center frequency with a relatively narrow instantaneous bandwidth. Alternatively, a fractal shape enables the antenna array to realize a full-band instantaneous bandwidth. Each frequency band has its own feeding lines.

Partnering Opportunity

The research team is looking for partners and potential licensees to develop the technology further for commercialization.

Stage of Development

Prototype available.


  • Realizes continuous frequency coverage from band to band with the same antenna aperture
  • Reduces the cost and size of new communication systems
  • Adaptable to different areas of communication, such as radar and electronic warfare systems

Market Application

  • Communication systems
  • Radars
  • Phased array antenna systems