A matched Bow-tie antenna at 433MHz for use in underwater wireless sensor networks

7th Sensors & their Applications

Abdou, A.A.^1 ; Shaw, A.^1 ; Mason, A.^1 ; Al-Shamma'A, A.^1 ; Cullen, J.^1 ; Wylie, S.^1 ; Diallo, M.^1

BEST Research Institute, School of the Built Environment, Liverpool John Moores University, Liverpool, L3 2ET, United Kingdom^1

关键词: Airborne transmission;    Bow-tie antennas;    High frequency HF;    Industrial , scientific and medical bands;    Narrow-band antennas;    Underwater application;    Underwater wireless sensor networks;    Wireless transceiver;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/450/1/012048/pdf
DOI  :  10.1088/1742-6596/450/1/012048

来源: IOP

【 摘 要 】

Electromagnetic (EM) wave propagation underwater is been disregarded because of attenuation at high frequencies, however the theory predicts that propagation is possible at some useful distance in the lower Industrial, Scientific and Medical (ISM) band. Common transceivers rely on narrowband antennas and matching circuit. The aim of this paper is to design a broadband 433MHz bow-tie antenna and experiment it in air and water without a matching circuit. This antenna could be attached to wireless transceivers and form a Wireless Sensor Network for deployment in various underwater applications. The bow-tie antennas were designed, simulated and constructed in laboratory. Experiments were setup carefully by using a completely isolated transmitter from electronics to avoid airborne transmission. The 433MHz. bow-tie proved its suitability for use in Underwater.