Journal of Electrical Engineering and Technology

The Korean Institute of Electrical Engineers (대한전기학회)
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Design, Fabrication and Measurement of a Compact, Frequency Reconfigurable, Modified T-shape Planar Antenna for Portable Applications

  • Iqbal, Amjad (Dept. of Electrical Engineering, CECOS University) ;
  • Ullah, Sadiq (Dept. of Telecommunication Engineering, University of Engineering & Technology) ;
  • Naeem, Umair (Dept. of Electrical Engineering, COMSATS Institute of Information Technology) ;
  • Basir, Abdul (Dept. of Telecommunication Engineering, University of Engineering & Technology) ;
  • Ali, Usman (Dept. of Telecommunication Engineering, University of Engineering & Technology)
  • Received : 2016.08.11
  • Accepted : 2017.04.12
  • Published : 2017.07.01
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Abstract

This paper presents a compact reconfigurable printed monopole antenna, operating in three different frequency bands (2.45 GHz, 3 GHz and 5.2 GHz), depending upon the state of the lumped element switch. The proposed multiband reconfigurable antenna is designed and fabricated on a 1.6 mm thicker FR-4 substrate having a relative permittivity of 4.4. When the switch is turned ON, the antenna operates in a dual band frequency mode, i.e. WiFi at 2.45 GHz (2.06-3.14 GHz) and WLAN at 5.4 GHz (5.11-5.66 GHz). When the switch is turned OFF, it operates only at 3 GHz (2.44-3.66 GHz). The antenna radiates omni-directionally in these bands with an adequate, bandwidth (>10 %), efficiency (>90 %), gain (>1.2 dB), directivity (>1.7 dBi) and VSWR (<2). The fabricated antenna is tested in the laboratory to validate the simulated results. The antenna, due to its reasonably compact size ($39{\times}37mm^2$), can be used in portable devices such as laptops and iPads.

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References

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