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A Bionic Flapping Magnetic‐Dipole Resonator for ELF Cross‐Medium Communication

Authors :
Zhi Cheng
Jing Zhou
Bin Wang
Qiong Wu
Liang Ma
Zhi Qin
Jie Shen
Wen Chen
Wei Peng
Jianglei Chang
Penghong Ci
Shuxiang Dong
Source :
Advanced Science, Vol 11, Iss 30, Pp n/a-n/a (2024)
Publication Year :
2024
Publisher :
Wiley, 2024.

Abstract

Abstract Extremely low‐frequency (ELF) electromagnetic (EM) waves adeptly propagate in harsh cross‐medium environments, overcoming rapid decay that hinders high‐frequency counterparts. Traditional antennas, however, encounter challenges concerning size, efficiency, and power. Here, drawing inspiration from nature, we present a groundbreaking piezo‐actuated, bionic flapping‐wing magnetic‐dipole resonator (BFW‐MDR), operating in the electro‐mechano‐magnetic coupling mechanism, designed for efficient ELF EM wave transmission. The unique rigid‐flexible hybrid flapping‐wing structure magnifies rotation angles of anti‐phase magnetic dipoles by tenfold, leading to constructive superposition of emitted magnetic fields. Consequently, the BFW‐MDR exhibits a remarkable quality factor of 288 and an enhanced magnetic field emission of 514 fT at 100 meters with only 6.9 mW power consumption, surpassing traditional coil antennas by three orders of magnitude. The communication rate is doubled by the ASK+PSK modulation method. Its robust performance in cross‐medium communication, even amidst various interferences, underscores its potential as a highly efficient antenna for underwater and underground applications.

Details

Language :
English
ISSN :
21983844
Volume :
11
Issue :
30
Database :
Directory of Open Access Journals
Journal :
Advanced Science
Publication Type :
Academic Journal
Accession number :
edsdoj.84ee4b33dc054ca3b836e3dbe19b0e8b
Document Type :
article
Full Text :
https://doi.org/10.1002/advs.202403746