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Low-frequency mechanical antenna based on electromechanical coupling and signal processing method

An electromechanical coupling and low-frequency technology, which is applied in communication modulation, low-frequency mechanical antenna and its signal processing, and ULF/SLF frequency band communication, can solve problems such as difficulty in project implementation, low modulation efficiency, and poor stability, so as to improve fit, Effect of improving modulation efficiency and bit rate and ensuring concentricity

Active Publication Date: 2020-07-31
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 based on electromechanical coupling and signal processing method
  • Low-frequency mechanical antenna based on electromechanical coupling and signal processing method
  • Low-frequency mechanical antenna based on electromechanical coupling and signal processing method

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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, and mainly solves the problems of poor stability and low modulation efficiency of a traditional mechanical antenna system in the prior art. According to the technical scheme, the method comprises the following steps: the spherical permanent magnet is fixed by the cylindrical fixing sleeve sleeved with the motor spindle in the same diameter through the high-speed bearing, so that the operation stability is ensured; a high-speed servo motor is used for driving a spherical permanent magnet to rotate and radiating same-frequency electromagnetic waves outwards; the spherical permanent magnet is arranged in a magnetic shielding case of a signal loader, amplitude modulation information on a low-frequency magnetic field is loaded by changing the magnetic conductivity of a shielding case, a modulation signal is filtered and amplified by the signal collector, and then synchronization and demodulation are realized in the signal processor. According to the invention, the stability of a mechanical antenna rotation system is improved, a coding and modulation method adapting to a mechanical antenna modulation signal is provided, the signal processing efficiency of the antenna is effectively improved, engineering realization in information transmission application is facilitated, and the method can be used for a low-frequency wireless communication system.

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 Applications(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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