Isolation Improvement between Closely-Spaced Antennas Using EBG
Keywords:
EBG structure, MIMO, mutual coupling, PIFAAbstract
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.
Downloads
References
A. H. Radhi, R. Nilavalan, Y. Wang, H. S. Al-Raweshidy, A. A. Eltokhy, and N. Ab-Aziz, “Mutual coupling reduction with a novel fractal electromagnetic band gap structure,” IET Microw., Antennas Propag., vol. 13, no. 2, pp. 134-141, 2019.
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.
M. Karaboikis, V. Papamichael, G. Tsachtsiris, C. Soras, and V. Makios, “Integrating compact printed antennas onto small diversity/MIMO terminals,” IEEE Trans. Antennas Propag., 56, no. 7, pp. 2067-2078, July 2008.
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.
