Miniaturized Split Ring Resonator Planar Antenna

Tech ID: 22259 / UC Case 2011-697-0


UCLA researchers in the Department of Electrical Engineering have developed a miniaturized split ring resonator antenna that has good radiation efficiency, wide bandwidth and an omni-directional radiation pattern making it ideal for integration on small handset components in wireless communication systems.


Antenna radiation efficiency and bandwidth are directly related to the quality factor of the resonator, which is usually inversely proportional to the antenna size. It is difficult to design a small antenna with high radiation efficiency and wide bandwidth performance, thus most designs do not provide good enough performance for practical applications.


  Researchers at UCLA have developed a novel antenna structure based on a vertical split ring resonator configuration that allows for miniaturization while maintaining its small size, good radiation efficiency and high bandwidth performance.


  • Bluetooth communication in cell phones and notebook computers
  • Integration on small handset components for wireless communication systems


  • Miniaturized
  • Good radiation efficiency
  • Wide bandwidth
  • Omni-directional radiation patterns
  • Small footprint size
  • Internal matching network

State Of Development

Device has been modeled and experimental tested in the lab.

Patent Status

Country Type Number Dated Case
China Issued Patent ZL201280029067.7 02/15/2017 2011-697
United States Of America Issued Patent 9,502,761 11/22/2016 2011-697


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  • Itoh, Tatsuo

Other Information


antenna, split ring resonator, metamaterial, wireless

Categorized As