Acoustic actuator antenna system based on magnetoelectric laminated composites
Tingyu Deng, Li Lu, Di Lin, Lili Zhu, Cheng Bai, Ziyi Xia, Wenning Di, Dong Wang, Jie Jiao, Haosu Luo
Abstract
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/Hz 1/2 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.