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Keywords:

  • dielectric loaded antenna;
  • dielectric resonator antenna;
  • hybrid antennas;
  • wideband

Abstract

A method to further broaden the bandwidth of compact dielectric-resonator-on-patch antennas, using an E-shaped patch is presented. Without enlarging the volume or area of the antenna, the experimental antenna demonstrates a 10 dB return loss bandwidth of 4.38–7.96 GHz (58%), wider than the formally obtained 4.7–7 GHz (39.3%). The wideband mechanism is explored by investigating the behavior of the currents on the patch and the electric field distributed in the near field. To show the validity of the design concept, a prototype is fabricated and tested. © 2011 Wiley Periodicals, Inc. Microwave Opt Technol Lett 54:66–71, 2012; View this article online at wileyonlinelibrary.com. DOI 10.1002/mop.26481