Journal of Electrical Engineering and Technology

  • 제11권6호
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  • Pages.1777-1782
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  • 2016
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  • 1975-0102(pISSN)
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  • 2093-7423(eISSN)
대한전기학회 (The Korean Institute of Electrical Engineers)
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Considerable Size Reduction of Dipole Antenna with a Compact and Broadband Balun

  • Han, Heeje (Dept. of Electrical Engineering, Kyungpook National University) ;
  • Kim, Hyungpyo (Dept. of Electrical Engineering, Kyungpook National University) ;
  • Kim, Hongjoon (Dept. of Electrical Engineering, Kyungpook National University)
  • 투고 : 2015.12.16
  • 심사 : 2016.07.06
  • 발행 : 2016.11.01
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초록

A compact and broadband balun is designed using a conventional right-handed transmission line (RHTL) and a left-handed transmission line (LHTL) with lumped elements only. The proposed balun maintains a phase difference of $180^{\circ}{\pm}12^{\circ}$ at the output ports for the frequency range of 1.27 GHz-2.69 GHz. Nevertheless, the circuit size is merely $9.5mm{\times}12.7mm$. To verify the performance of the proposed balun, we attached it to a dipole-type antenna and observed that the return loss is greater than 10 dB for the frequency range between 1.86 GHz and GHz. The radiation pattern and peak gain are similar to those of the dipole antenna with a conventional balun.

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참고문헌

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