Research on ASK Modulation Method for Rotating Magnet Based Mechanical Antenna Array System

Mechanical antenna(MA) is a new type of low frequency electromagnetic signal transmission technology, which has the characteristics of miniaturization and low power consumption. In order to reduce the control difficulty of the large inertia rotating magnet based mechanical antenna (RMBMA) and expand the form of signal modulation, RMBMA array system and its ASK modulation method are proposed in this paper. By controlling the speed and position difference of permanent magnet synchronous motors (PMSMs), the motion control of the rotating magnetic sources and the loading of the ASK modulation signal are realized. The feasibility of the proposed modulation method is verified by the electromagnetic simulation of magnetic sources, the control simulation of PMSMs and the near-field experiment.