What is it about?

Regular antennas for transmitting low-frequency electromagnetic waves are usually very large, making them impractical for use in underground spaces. However, a new type of antenna called Rotating-magnet Based Mechanical Antennas has emerged, promising to shrink the size of low-frequency antennas and open up new possibilities for underground communication and detection. This paper describes how these antennas work and presents research findings that demonstrate their effectiveness. By using a combination of mathematical modeling and experimental testing, the researchers show that these miniature antennas can transmit signals through the ground and detect electromagnetic fields with impressive accuracy. This breakthrough lays the groundwork for future advancements in underground communication and detection technologies.

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Why is it important?

Miniaturizing antennas for underground use breaks barriers in communication and detection. This advancement opens up possibilities for efficient communication in mining, disaster response, and military operations, while also enhancing ground penetration detection in archaeology and environmental monitoring. The findings establish a foundation for further innovations, promising significant strides in underground exploration and societal benefits.


Current research on permanent magnet mechanical antennas is still in the theoretical research stage and rarely involves through-ground communications. This paper focuses on the electromagnetic field propagation characteristics of rotating permanent magnets across the space-earth medium, laying the foundation for the application of mechanical antennas in through-earth communications.

Wenwei Zhang

Read the Original

This page is a summary of: Research on electromagnetic field characteristics of rotating-magnet based mechanical antenna through the earth, International Journal of Applied Electromagnetics and Mechanics, February 2024, IOS Press,
DOI: 10.3233/jae-230080.
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