Switchable Printed Yagi-Uda Antenna with Pattern Reconfiguration

  • Baik, Jung-Woo (Research Institute for Information and Communication Technology, Korea University) ;
  • Pyo, Seong-Min (Department of Radio Communications Engineering, Korea University) ;
  • Lee, Tae-Hak (Department of Radio Communications Engineering, Korea University) ;
  • Kim, Young-Sik (Department of Radio Communications Engineering, Korea University)
  • Received : 2009.01.06
  • Accepted : 2009.03.11
  • Published : 2009.06.30

Abstract

A switchable Yagi-Uda antenna prototype with radiation pattern reconfiguration is presented in this letter. The proposed reconfigurable antenna is based on the concept of switching between the reflector and director of a Yagi-Uda antenna using a radio frequency PIN diode. As a result, the minimum/maximum radiation can be steered towards desired signals or away from interfering signals in opposite directions. The measured 10 dB impedance bandwidth and gain are 210 MHz (7%) and 8.02 dBi at 3 GHz, respectively. Details of the antenna design and its performance are described and empirically analyzed.

Keywords

References

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