Rotated Stacked Yagi Antenna with Circular Polarization for IoT Applications

Authors

  • Ji-Hong Kim Defense Agency for Technology and Quality (DTaQ), Jinju 52851, Republic of Korea
  • Chang-Hyun Jeong Department of Electronic Engineering/Engineering Research Institute (ERI) Gyeongsang National University (GNU), 501, Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea
  • Wang-Sang Lee Department of Electronic Engineering/Engineering Research Institute (ERI) Gyeongsang National University (GNU), 501, Jinju-daero, Jinju, Gyeongnam, 52828, Republic of Korea

Keywords:

Array, circular polarization, dipole antennas, IoT, rotated stacked, Yagi antenna

Abstract

This letter proposes a rotated stacked Yagi antenna with high directivity and circular polarization. The proposed antenna consists of three elements with a rotation angle and different lengths: a director, a reflector, and a driven element connected to the coaxial feeder. The coaxial feeding is connected to the driven element of the proposed antenna via a LC-balun, and the others are coupled with the driven element. Each stacked element with different lengths is equally rotated at an angle of 60° with respect to the lower element so that the dipole array antenna forms a high directive circular polarization. The size of the proposed antenna is 0.49λ0, × 0.49λ0, × 0.17λ0, at 2.45 GHz and achieved a 10 dB impedance bandwidth of 6.3%, a 3 dB axial ratio bandwidth of 8%, and a peak gain of 4.3 dBic.

References

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Published

2019-08-01

How to Cite

Ji-Hong Kim, Chang-Hyun Jeong, & Wang-Sang Lee. (2019). Rotated Stacked Yagi Antenna with Circular Polarization for IoT Applications. The Applied Computational Electromagnetics Society Journal (ACES), 34(08), 1246–1249. Retrieved from https://journals.riverpublishers.com/index.php/ACES/article/view/8307

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Articles