Working Paper Communication Version 1 This version is not peer-reviewed

Communication Mechanism and Experimental Research of Super-Low Frequency Mechanicanl Antenna Based on Rotating Permanent Magnet

Version 1 : Received: 19 June 2020 / Approved: 21 June 2020 / Online: 21 June 2020 (11:46:50 CEST)

How to cite: Wang, X.; Zhang, W.; Zhou, X.; Cao, Z.; Quan, X. Communication Mechanism and Experimental Research of Super-Low Frequency Mechanicanl Antenna Based on Rotating Permanent Magnet. Preprints 2020, 2020060266 Wang, X.; Zhang, W.; Zhou, X.; Cao, Z.; Quan, X. Communication Mechanism and Experimental Research of Super-Low Frequency Mechanicanl Antenna Based on Rotating Permanent Magnet. Preprints 2020, 2020060266

Abstract

Super-low frequency communication technology has a broad application prospect in submarine, mine emergency, earthquake prediction and military and other fields. Super-low frequency mechanical antenna excites electromagnetic wave through the mechanical movement of permanent magnet, converts mechanical energy into electromagnetic energy, and realizes wireless communication. Based on the theory of ampere-current, the analytical model of radiation field of a constant rotating permanent magnet is established by introducing the parameters of the permanent magnet and the measured distance. The relationship between the influencing factors and the radiation field of rotating permanent magnet was studied experimentally. The propagation characteristics in air, soil and sea water were studied by simulation, and communication experiments were carried out by using 2FSK signal modulation. The results of simulation and experiment show that the radiation intensity of axial rotating permanent magnet is higher than that of radial rotating permanent magnet. Propagation losses increase in air, soil, and sea water. The radiation intensity of a rotating permanent magnet is proportional to its volume. Through the real-time control of the speed, the signal is transformed in time-frequency domain to realize super-low frequency communication. The model can be used for size evaluation and optimization of super-low frequency antenna.

Subject Areas

Antenna measurements; Antenna radiation patterns; Antenna theory; Communication system reliability; Magnetic field measurement

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