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Analysis of UUV Whip Antenna Radiated Power and Optimal Working Frequency in Seawater Environment

By Menglei Xiu, Lihua Li, Shimin Feng, Wenda Hou, and Longfei Wang
Progress In Electromagnetics Research C, Vol. 118, 61-70, 2022


In order to analyze the working status of the underwater unmanned vehicle not fully surfaced, the optimal working frequency when the whip antenna radiates the maximum power is given. The input impedance of the antenna on the water is theoretically calculated. It is regarded as the load of the underwater part of the antenna, and the total input impedance of the whip antenna is obtained. The relationship between the antenna radiated power to the external field and the input power is analyzed, and the optimal operating frequency corresponding to the maximum radiated power is determined. Using simulation experiments and actual measurements, the radiated power of the 1 m whip antenna when being immersed in seawater at 0.25 m, 0.5 m, 0.75 m is obtained, and the corresponding optimal working frequency is calculated, which are in good agreement with the theoretical deduction results. The results show that as the depth of the antenna immersed in seawater increases, the power radiated from the antenna to the external field decreases, and the optimal working frequency increases accordingly.


Menglei Xiu, Lihua Li, Shimin Feng, Wenda Hou, and Longfei Wang, "Analysis of UUV Whip Antenna Radiated Power and Optimal Working Frequency in Seawater Environment," Progress In Electromagnetics Research C, Vol. 118, 61-70, 2022.


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