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Dual-Band Microstrip Patch Antenna with Switchable Orthogonal Linear Polarizations

  • Kim, Jeongin (Department of Electronic Engineering, Kyonggi University) ;
  • Sung, Youngje (Department of Electronic Engineering, Kyonggi University)
  • Received : 2018.01.18
  • Accepted : 2018.06.19
  • Published : 2018.10.31

Abstract

This study presents a dual-band polarization-reconfigurable antenna that comprises a large square patch with a pair of corner-cut edges and two small square patches with a shorting via. Two PIN diodes are located between the large square patch and two small square patches. Depending on the bias state applied to the two PIN diodes, each small patch may be disconnected or connected to the large square patch. As a result, the proposed antenna can provide polarization reconfigurability between two orthogonal linear polarizations. Further, the proposed antenna operates at 2.51 GHz and 2.71 GHz. From the measured results, the proposed antenna shows a 10 dB bandwidth of 2.39% (2.49-2.55 GHz) and 2.58% (2.68-2.75 GHz). In this work, the frequency ratio can be easily controlled by changing the size of the small patch.

Keywords

Dual-Band Reconfigurable Antenna;Polarization-Reconfigurable Antenna;Switchable Orthogonal Linear Polarizations

Acknowledgement

Supported by : National Research Foundation of Korea

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