Qianshi Zhang, Xiayu Zhang, Boyu Xin, Zishuo Fan, Jie Jiao, Yi Liu, Anran Gao, Chungang Duan
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引用次数: 0
Abstract
Low-frequency electromagnetic (EM) waves are essential in underwater, deep-earth, and other communication environments due to their minimal attenuation. The magnetoelectric (ME) antenna, a novel mechanical antenna, provides a promising solution for low-frequency EM wave communication, overcoming the limitations of conventional designs in terms of size and efficiency. To address the low transmission rate in low-frequency EM wave communication, this paper proposes a multi-key tunable antenna array based on an ME cantilever beam design. Each antenna array element consists of Metglas/0.7Pb(Mg1/3Nb2/3)O3–0.3PbTiO3 (PMN-PT) ME composite. Simulations identified a structure that significantly lowers the resonant frequency, allowing the ME antenna array to operate within the ultra-low frequency (ULF, 300 Hz-3000 Hz) band. Furthermore, the resonant frequency can be tuned over a range of 500 Hz, enabling multi-frequency-shift keying (MFSK) communication. Using quaternary FSK (4FSK) modulation, a 40 baud color image transmission is successfully demonstrated in a 5 S m−1 saline environment. Compared to binary FSK (2FSK) at the same baud rate, the transmission speed is increased by 100%. This approach achieves both low attenuation and high transmission rates, offering a promising new direction for ocean communications.
期刊介绍:
Advanced Electronic Materials is an interdisciplinary forum for peer-reviewed, high-quality, high-impact research in the fields of materials science, physics, and engineering of electronic and magnetic materials. It includes research on physics and physical properties of electronic and magnetic materials, spintronics, electronics, device physics and engineering, micro- and nano-electromechanical systems, and organic electronics, in addition to fundamental research.