A Multilayered Magnetoelectric Transmitter with Suppressed Nonlinearity for Portable VLF Communication
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
Affiliations
Zhaoqiang Chu
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Zhineng Mao
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Kaixin Song
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Shizhan Jiang
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Shugang Min
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Wei Dan
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Chenyuan Yu
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Meiyu Wu
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Yinghui Ren
Qingdao Innovation and Development Base, Harbin Engineering University, Qingdao 266071, China.
Zhichao Lu
Songshan Lake Materials Laboratory, Dongguan, Guangdong 523808 China.
Jie Jiao
Shanghai Institute of Ceramics, Chinese Academy of Sciences, Shanghai 201800, China.
Tianxiang Nan
School of Integrated Circuits and Beijing National Research Center for Information Science and Technology (BNRist), Tsinghua University, Beijing 100084, China.
Shuxiang Dong
College of Engineering, Peking University, Beijing 100871, China.
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 Vpp 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.
