Isolation Improvement between Closely-Spaced Antennas Using EBG

Authors

  • Ahmad H. Abdelgwad Department of Electrical Engineering University of South Carolina, Columbia, SC USA
  • Mohammod Ali Department of Electrical Engineering University of South Carolina, Columbia, SC USA

Keywords:

EBG structure, MIMO, mutual coupling, PIFA

Abstract

Isolation improvement between two closely spaced antennas using a single column EBG is proposed for compact wireless devices. The proposed design developed for the 2.4 GHz WLAN band achieves more than 17 dB isolation improvement between two planar inverted-F antennas (PIFAs) compared to the no-EBG case. As a result, improved MIMO capacity is also achieved. The proposed design can be scaled up or down in frequency and may be implemented for small devices such as, smart watches, Wi-Fi routers, internet of things (IoT) devices etc.

References

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A. H. Abdelgwad and M. Ali, “Isolation improvement of a two-port PIFA for MIMO using a planar EBG ground,” Microw. Opt. Technol. Lett., pp. 1-6, 2019. https://doi.org/10.1002/mop.32059

F. Yang and Y. Rahmat-Samii, “Microstrip antennas integrated with electromagnetic band-gap (EBG) structures: A low mutual coupling design for array applications,” IEEE Trans. Antennas Propag., vol. 51, no. 10, pp. 2936-2946, Oct. 2003.

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X. Chen, P. Kildal, and J. Carlsson “Simple Calculation of Ergodic Capacity of Lossless Two-port Antenna System using Only S-parameters – Comparison with Common Z-parameter Approach,” IEEE Int. Symp. Antennas Propag., Spokane, USA, 2011.

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Published

2020-11-07

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Section

Articles