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Low Frequency Mechanical Antenna and Signal Processing Method Based on Electromechanical Coupling

An electromechanical coupling, low frequency technology, applied in the field of communication, can solve the problems of difficult project landing, poor stability, low modulation efficiency, etc., to improve the fit, ensure concentricity, and improve the modulation efficiency and bit rate.

Active Publication Date: 2021-10-29
XIDIAN UNIV
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Problems solved by technology

Solve the problems of poor stability of traditional mechanical antenna system, low modulation efficiency, and difficulty in engineering implementation in information transmission applications

Method used

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  • Low Frequency Mechanical Antenna and Signal Processing Method Based on Electromechanical Coupling
  • Low Frequency Mechanical Antenna and Signal Processing Method Based on Electromechanical Coupling
  • Low Frequency Mechanical Antenna and Signal Processing Method Based on Electromechanical Coupling

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Embodiment Construction

[0029] The present invention will be further described below in conjunction with the accompanying drawings.

[0030] Refer to attached figure 1 , the present invention proposes a low-frequency mechanical antenna based on electromechanical coupling, including: a carrier transmitter, a signal loader, a signal receiver, and an antenna base.

[0031] The carrier transmitter includes a high-speed servo motor, a spherical permanent magnet, a cylindrical fixed sleeve and a high-speed bearing. Among them, the high-speed servo motor is fixed on the base of the antenna, which is not only used to control the rotation of the spherical permanent magnet, but also realizes the precise switching of the rotation frequency while completing the basic amplitude modulation. The function of the cylindrical fixed sleeve includes screws, a reinforced cover and a fixed block, and the inner diameter of the fixed block is the same as the diameter of the spherical permanent magnet, and the inner diamete...

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Abstract

The invention discloses a low-frequency mechanical antenna based on electromechanical coupling and a signal processing method, which mainly solves the problems of poor stability and low modulation efficiency of the traditional mechanical antenna system in the prior art. Its technical scheme includes: using a cylindrical fixed sleeve that is connected with the motor shaft through a high-speed bearing to fix the spherical permanent magnet to ensure the stability of operation, using a high-speed servo motor to drive the spherical permanent magnet to rotate and radiate electromagnetic waves of the same frequency outward, and the spherical permanent magnet The magnet is placed in the magnetic shield of the signal loader. By changing the magnetic permeability of the shield, the loading of the amplitude modulation information on the low-frequency magnetic field is realized. The modulated signal is filtered and amplified by the signal collector, and then synchronized and resolved in the signal processor. Tune. The invention increases the stability of the mechanical antenna rotation system, proposes a coding and modulation method adapted to the modulation signal of the mechanical antenna, effectively improves the signal processing efficiency of the antenna, is more conducive to engineering realization in information transmission applications, and can be used in low-frequency wireless communication systems .

Description

technical field [0001] The invention belongs to the technical field of communication, relates to communication modulation technology, and further relates to a low-frequency mechanical antenna based on electromechanical coupling and a signal processing method thereof, which can be used for underground or underwater ULF / SLF frequency band communication. Background technique [0002] Mechanical antennas are mainly used to solve the problems of large antenna size and low radiation efficiency in low-frequency communication of traditional electrical short antennas. Unlike electric short antennas that excite electromagnetic fields through internal oscillating currents, mechanical antennas generate low-frequency electromagnetic signals by driving strong electric bodies or strong magnets to radiate mechanical motion. Its application prospect in ULF / SLF frequency band communication is huge. [0003] The difficulty in designing a mechanical antenna lies in how to achieve efficient sig...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04L27/36H04L27/38
CPCH04L27/36H04L27/38H04L27/3818
Inventor 刘毅毋亚雄秦凡弓树宏关恩强张海林
Owner XIDIAN UNIV
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