Mechanical antenna(MA),which depends on the mechanical motion of charge or magnetic charge to generate electromagnetic radiation,has become a research hotspot in communication,anten-na,materials,machinery,and other fields because of its wide application prospects in resource explo-ration,submarine communication,underwater communication,and navigation and positioning.The unique mechanical-electromagnetic coupling excitation method was expected to render MA capable of breaking through the physical size limitations of traditional antennas,solve the problems of large vo-lume and low radiation efficiency of the existing long-wave antenna system,and improve the flexibility and economy of low-frequency wireless communication.Firstly,the mechanical-electromagnetic cou-pling mechanism of MA was introduced,and its classification,characteristics,research methods and dynamics were detailed.And then,based on the current situation of low-frequency wireless communi-cation,the key problems and challenges that call for urgent solution for realizing the application of MA were discussed.Finally,the key technological advances in enhancing the flexibility and radiation capability of magnetoelectric antenna were introduced.
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