Characteristic Evaluation and Application of an ESPAR Antenna for Interference Mitigation in the WiFi Ambient Backscatter System 


Vol. 46,  No. 11, pp. 1779-1785, Nov.  2021
10.7840/kics.2021.46.11.1779


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  Abstract

In this paper, we design an ESPAR(Electronically Steerable Parasitic Array Radiator) antenna with beam steering for WiFi Ambient backscatter communication and simulate it assuming a variety of communication environments in the WiFi frequency band, 2.45 GHz. We first design an ESPAR antenna for the 2.45 GHz band and check the basic antenna gain. Thereafter, beamforming or nulling is performed by adjusting the reactance of parasitic elements constituting the antenna to minimize interference and improve communication performance. The antenna gain is lowered by nulling in the direction in which the interference signal is received, and the antenna gain is increased by beamforming in the direction in which the communication signal is received. In this paper, we adjust the reactance of parasitic elements according to three communication environments by setting different situations in which interference signals come in. As a result of the simulation, since the beam can be steered according to various communication environments, it can be less affected by interference with a low antenna gain in the direction of the interference signal, and the performance can be improved with a high antenna gain in the direction of the communication signal.

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  Cite this article

[IEEE Style]

H. M. Kwon and H. Ryu, "Characteristic Evaluation and Application of an ESPAR Antenna for Interference Mitigation in the WiFi Ambient Backscatter System," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 11, pp. 1779-1785, 2021. DOI: 10.7840/kics.2021.46.11.1779.

[ACM Style]

Hyeong Min Kwon and Heung-Gyoon Ryu. 2021. Characteristic Evaluation and Application of an ESPAR Antenna for Interference Mitigation in the WiFi Ambient Backscatter System. The Journal of Korean Institute of Communications and Information Sciences, 46, 11, (2021), 1779-1785. DOI: 10.7840/kics.2021.46.11.1779.

[KICS Style]

Hyeong Min Kwon and Heung-Gyoon Ryu, "Characteristic Evaluation and Application of an ESPAR Antenna for Interference Mitigation in the WiFi Ambient Backscatter System," The Journal of Korean Institute of Communications and Information Sciences, vol. 46, no. 11, pp. 1779-1785, 11. 2021. (https://doi.org/10.7840/kics.2021.46.11.1779)

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pISSN : 1226 - 4717
eISSN : 2287 - 3880