Acoustic actuator antenna system based on magnetoelectric laminated composites

In this work, we establish a magnetoelectric antenna system. The receiver is an in-plane series sensor composed of Mn-PMNT crystal fibers and Metglas. It has excellent magnetic field detection ability, reaching 3.1 pT/Hz1/2 under 1 Hz. We fabricated an asymmetric ME antenna based on PZT-5 H and Metglas at the transmitting end. The transmitter has two resonance peaks at a very low frequency (VLF), and its radiation ability can reach 73 nT at 14 kHz and 6.3 nT at 5.63 kHz. Furthermore, a nonlinear magnetostrictive model is constructed, and the ME effects are discussed through finite element mode. This model indicates that the near-field radiation capability of the device is strongly influenced by the frequency and magnetic bias, with the maximum performance achieved when the ME composite operates at the resonant frequency and the optimal piezomagnetic coefficient. [Display omitted] •The nonlinear near-field acoustic excitation antenna model can predict the resonant frequency of ME composites.•The PZT/Metglas magnetoelectric antenna fabricated in this work has two resonant frequencies in the very low-frequency band. The transmission capacity reaches 73 nT at 14 kHz and 6.3 nT at 5.63 kHz. Under limited external environmental interference, the signal can be recognized at 12.4 m and 5.2 m, respectively.•The receiver is made of Mn-PMNT fiber single crystals and Metglas and has an equivalent noise magnetic field of 3.1 pT/Hz1/2 whose detection sensitivity is better than multi-push-pull (MPP) magnetoelectric sensor (5.3 pT/Hz1/2).