A Multilayered Magnetoelectric Transmitter with Suppressed Nonlinearity for Portable VLF Communication  

作　　者：Zhaoqiang Chu Zhineng Mao Kaixin Song Shizhan Jiang Shugang Min Wei Dan Chenyuan Yu Meiyu Wu Yinghui Ren Zhichao Lu Jie Jiao Tianxiang Nan Shuxiang Dong 

机构地区：[1]Qingdao Innovation and Development Base,Harbin Engineering University,Qingdao 266071,China [2]College of Underwater Acoustics Engineering,Harbin Engineering University,Harbin 150001,China [3]Songshan Lake Materials Laboratory,Dongguan,Guangdong 523808 China [4]Shanghai Institute of Ceramics,Chinese Academy of Sciences,Shanghai 201800,China [5]School of Integrated Circuits and Beijing National Research Center for Information Science and Technology(BNRist),Tsinghua University,Beijing 100084,China [6]College of Engineering,Peking University,Beijing 100871,China

出　　处：《Research》2024年第2期553-563,共11页研究（英文）

基　　金：supported by the National Natural Science Foundation of China(grant nos.52102127 and U22A2019);the Natural Science Foundation of Shandong Province,China(grant no.ZR2021QF021);the Stable Supporting Fund of Acoustic Science and Technology Laboratory(no.JCKYS2021604SSJS005).

摘　　要：Acoustically actuated magnetoelectric(ME)antenna based on the efficient oscillation of magnetic dipoles has recently been considered as a promising solution for portable very-low-frequency communications.However,the severe nonlinear dynamic behavior in the case of strong-field excitation results in insufficient radiation capability and poor communication performance for a conventional ME antenna.In this work,we propose to suppress the nonlinearity of an ME antenna by neutralizing the spring-hardening effect in amorphous Metglas and the spring-softening effect in piezoelectric ceramics through an ME multilayered transmitter(ME-MLTx)design.With a driving voltage of 50 V_(pp)at the resonance frequency of 21.2 kHz,a magnetic flux density as high as 108 fT at a distance of 100 m is produced from a single ME-MLTx.In addition,ME-MLTx performs a decreased mechanical quality factor(Q_(m))less than 40.65,and,thus,a broadened bandwidth of 500 Hz is generated.Finally,a communication link transmitting binary American Standard Code for Information Interchange-coded message is built,which allows for an error-free communication with a distance of 18 m and a data rate of 300 bit/s in the presence of heavy environment noise.The communication distance can be further estimated over 100 m when using a femtotesla-class-inductive magnetic field receiver.The obtained results are believed to bring ME antennas one step closer to being applicable in very-low-frequency communications.

关 键 词：CLOSER NONLINEARITY INDUCTIVE 

分 类 号：O17[理学—数学]