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Electronics and Telecommunications Research Institute (한국전자통신연구원)
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Controllable Band-Notched Slot Antenna for UWB Communication Systems

  • Kueathaweekun, Weerathep (Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Anantrasirichai, Noppin (Institute for the Promotion of Teaching Science and Technology (IPST)) ;
  • Benjangkaprasert, Chawalit (Faculty of Engineering, King Mongkut's Institute of Technology Ladkrabang) ;
  • Nakasuwan, Jintana (Rajamangala University of Technology Thanyaburi (RMUTT)) ;
  • Wakabayashi, Toshio (Department of Electronic System Engineering, Malaysia-Japan International Institute of Technology (MJIIT), Universiti of Technologi Malaysia (UTM))
  • Received : 2011.10.14
  • Accepted : 2012.06.22
  • Published : 2012.10.31
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Abstract

We propose a slot antenna consisting of a rectangular slot on the ground plane, fed by a microstrip line with a rectangular-ring-shaped tuning stub that can be deployed in ultra-wideband (UWB) communication systems to avoid interference with wireless local area network (WLAN) communication. Our antenna can achieve a single band-notched property from the 5 GHz frequency to the 6 GHz frequency owing to a controllable band notch that uses L- and J-shaped parasitic elements. The antenna characteristics can be modified to tune the band-notched property (4 GHz to 5 GHz or 6 GHz to 7 GHz) and the bandwidth of the band notch (1 GHz to 2 GHz). Furthermore, the shifted notch with enhanced width of the band notch from 1 GHz to 1.5 GHz is described in this paper. The UWB slot antenna and L- and J-shaped parasitic elements also provide the band-rejection function for reference in the WiMAX (3.5 GHz) and WLAN (5 GHz to 6 GHz) regions of the spectrum. Experiment results evidence the return loss performance, radiation patterns, and antenna gains at different operational frequencies.

Keywords

References

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  1. Design of an Ultra-Wideband Antenna Using a Ring Resonator with a Notch Function vol.35, pp.6, 2013, https://doi.org/10.4218/etrij.13.0113.0472
  2. Main Effects Ensured by Symmetric Circular Slots Etched on the Radiating Patch of a Compact Monopole Antenna on the Impedance Bandwidth and Radiation Patterns vol.95, pp.4, 2012, https://doi.org/10.1007/s11277-017-4077-7