Abstract
In this paper, compact on-body antipodal Vivaldi antennas (AVAs) are proposed for body area network (BAN), which work at the lower ultra-wide-band (UWB). The antennas are modified by employing the tapered slot edge (TSE) to lower the resonance frequency and improve the radiation characteristics. In order to increase the gain of antenna further so that improve the transimission efficiency from in-body to on-body, two compact on-body AVA arrays are designed operating at the lower UWB. The polarization of the two antenna arrays are linear and mutually perpendicular with each other. In addition, each of antenna arrays are composed of four single elements which are fed by optimized 1x4 Wilkinson power divider. The performance of S11 and far field patterns show that the operating band of the antenna arrays covers the lower UWB band, which signifies that the benefits of introducing TSE to lower the resonance frequency is obvious. Furthermore, the influence of the human body on antenna array is discussed and the results satisfies the requirement of in-body to on-body communication.
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References
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Acknowledgements
This research is supported by “WiBEC” (Wireless In-Body Environment) project which has received funding from the European Union’s Horizon 2020 research and innovation programme under grant agreement No. 675353.
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Fang, X., Ramzan, M., Wang, Q., Plettemeier, D. (2019). Compact Antipodal Vivaldi Antennas for Body Area Communication. In: Fortino, G., Wang, Z. (eds) Advances in Body Area Networks I. Internet of Things. Springer, Cham. https://doi.org/10.1007/978-3-030-02819-0_27
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DOI: https://doi.org/10.1007/978-3-030-02819-0_27
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