CN113964493A - Low-frequency mechanical antenna based on hybrid model source - Google Patents
Low-frequency mechanical antenna based on hybrid model source Download PDFInfo
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- CN113964493A CN113964493A CN202111121221.0A CN202111121221A CN113964493A CN 113964493 A CN113964493 A CN 113964493A CN 202111121221 A CN202111121221 A CN 202111121221A CN 113964493 A CN113964493 A CN 113964493A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
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Abstract
The invention discloses a low-frequency mechanical antenna based on a hybrid model source, which comprises a permanent magnet, a magnetostrictive module, a first electrode, a piezoelectric module and a second electrode which are sequentially connected from top to bottom. The ends of the first electrode and the second electrode are respectively and electrically connected to two ends of an excitation power supply, when the excitation power supply is electrified, the first electrode and the second electrode excite the piezoelectric module to generate a piezoelectric effect to generate vibration, and the magnetostrictive module is driven to vibrate to generate magnetic field radiation. When the piezoelectric module generates piezoelectric effect to generate vibration, the piezoelectric module is also used as a vibration source to drive the permanent magnet to oscillate up and down to generate magnetic field radiation; the magnetostrictive module and the magnetic field radiation generated by the permanent magnet are mixed to form a final antenna electromagnetic field. The low-frequency mechanical antenna based on the hybrid model source can generate better radiation field intensity through the combined action of the piezoelectric module and the magnetostrictive module and the piezoelectric module and the permanent magnet, and can better meet the magnetic field requirement of low-frequency communication.
Description
Technical Field
The invention relates to the technical field of low-frequency communication, in particular to a low-frequency mechanical antenna based on a hybrid model source.
Background
The Low Frequency (LF) refers to radio waves with a frequency band from 300Hz to 30kHz, can penetrate deep seawater and rock formations, and is stably propagated in the earth-ionosphere waveguide, low in loss and basically free from nuclear explosion. The method has irreplaceable effects in the application occasions of long-distance submarine communication, underwater communication, through-the-earth communication, minimum communication and the like.
Traditional ground-based low-frequency transmission systems are bulky, the size of the established systems is in the order of tens of kilometers, and the targets are obvious and easy to hit. Due to the requirement of a grounding network, the transmitting system has extremely high requirement on the field, the required power consumption of the system is extremely high, the power consumption is in megawatt level, the power supply capacity is also greatly required, and the radiation efficiency of the system is low.
In order to solve the problems of the land-based low-frequency transmitting system, a persistent mobile low-frequency transmitting system becomes a research hotspot. On one hand, the system can undertake the low-frequency communication task after the ground-based low-frequency transmission system fails; on the other hand, the mobility of the submarine-based low-frequency communication system enables the submarine-based low-frequency communication system to be used as a relay station between land and a submarine, receive land high-frequency signals and carry out high-efficiency low-frequency communication at a position close to the submarine. The existing persistent maneuvering low-frequency transmitting system mainly comprises vehicle-mounted, ship-based, airborne, satellite-based and other schemes.
However, even though various mobile low-frequency transmitting systems exist at present, the objective requirement that the low-frequency antenna needs a larger volume cannot be changed. All there is obvious external antenna in various schemes, still has the risk of suffering the strike, and the obstinate mobile scheme can't be used for a long time, and the maintenance cost is high.
Aiming at the problems of the existing low-frequency communication system, in 2017, a mechanical antenna project which lasts for 45 months is developed by the U.S. DARPA (national defense advanced research program administration), and the aim is to research a small-sized, light-weighted and low-power-consumption low-frequency transmitting system. The project aims to drive an electret or permanent magnet material to generate a radio frequency signal for transmission through a mechanical device, the volume and the energy consumption of a transmitting antenna of the low-frequency navigation communication system can be greatly reduced in the mode, and great revolution and subversive innovation of a radio transmitting system are realized. Since then, mechanical antennas have become an important direction and trend for research in the field of low frequency communications. At present, more than twenty teams are dedicated to the research in the field of mechanical antennas at home and abroad.
Unlike conventional antennas, mechanical antennas do not rely on electronic circuits to oscillate currents to produce radiation, but rather use mechanical energy to drive the movement of electric charges or magnetic dipoles, which in turn are converted into electromagnetic energy to produce a radiation field. According to different implementations, mechanical antennas can be roughly classified into three categories: electret, permanent magnet, and piezoelectric resonance. The novel radiation principle makes it possible to break the physical size constraints imposed by the conventional antenna wavelength, thereby enabling low frequency communication in a smaller size.
Disclosure of Invention
The invention aims to: aiming at the defects of the traditional antenna low-frequency communication technology, the low-frequency mechanical antenna based on the hybrid model source is provided, and the magnetic field requirement of low-frequency communication can be well met.
The technical scheme of the invention is as follows:
the low-frequency mechanical antenna based on the hybrid model source comprises a permanent magnet, a magnetostrictive module, a first electrode, a piezoelectric module and a second electrode which are sequentially connected from top to bottom.
Preferably, the ends of the first electrode and the second electrode are respectively electrically connected to two ends of an excitation power supply, and when the excitation power supply is powered on, the first electrode and the second electrode excite the piezoelectric module to generate a piezoelectric effect to generate vibration, so as to drive the magnetostrictive module to vibrate and generate magnetic field radiation.
Preferably, when the piezoelectric module generates the vibration by the piezoelectric effect, the piezoelectric module is also used as a vibration source to drive the permanent magnet to oscillate up and down to generate magnetic field radiation; the magnetostrictive module and the magnetic field radiation generated by the permanent magnet are mixed to form a final antenna electromagnetic field.
Preferably, the permanent magnet, the magnetostrictive module and the piezoelectric module are sequentially connected in an adhesive manner; the first electrode and the second electrode sandwich the piezoelectric module.
Preferably, the frequency of the electromagnetic field of the antenna is 300Hz-30 kHz.
The invention has the advantages that:
the low-frequency mechanical antenna based on the hybrid model source can generate better radiation field intensity through the combined action of the piezoelectric module and the magnetostrictive module and the piezoelectric module and the permanent magnet, and can better meet the magnetic field requirement of low-frequency communication.
Drawings
The invention is further described with reference to the following figures and examples:
fig. 1 is a schematic structural diagram of a hybrid model source based low frequency mechanical antenna of the present invention.
Wherein: 1. a permanent magnet; 2. A magnetostrictive module; 3. a first electrode; 4. a piezoelectric module; 5. a second electrode; 6. an excitation power supply; 10. a low frequency mechanical antenna.
Detailed Description
As shown in fig. 1, the low-frequency mechanical antenna based on the hybrid model source provided by the invention comprises a permanent magnet 1, a magnetostrictive module 2, a first electrode 3, a piezoelectric module 5 and a second electrode 4 which are sequentially connected from top to bottom. The permanent magnet 1, the magnetostrictive module 2 and the piezoelectric module 5 are sequentially connected in an adhesive manner; the first electrode 3 and the second electrode 4 sandwich the piezoelectric module 5.
The ends of the first electrode 3 and the second electrode 4 are respectively and electrically connected to two ends of an excitation power supply 6, and when the excitation power supply 6 is powered on, the first electrode 3 and the second electrode 4 excite the piezoelectric module 5 to generate a piezoelectric effect to generate vibration, so that the magnetostrictive module 2 is driven to vibrate to generate magnetic field radiation. When the piezoelectric module 5 generates the piezoelectric effect to generate vibration, the piezoelectric module also serves as a vibration source to drive the permanent magnet 1 to oscillate up and down to generate magnetic field radiation; the magnetostrictive module 2 is mixed with the magnetic field radiation generated by the permanent magnet 1 to form a final antenna electromagnetic field. The frequency of the electromagnetic field of the antenna is 300Hz-30 kHz. The low-frequency mechanical antenna can generate better radiation field intensity through the combined action of the piezoelectric module and the magnetostrictive module as well as the piezoelectric module and the permanent magnet, and better meets the magnetic field requirement of low-frequency communication.
The above embodiments are merely illustrative of the technical ideas and features of the present invention, and the purpose of the embodiments is to enable those skilled in the art to understand the contents of the present invention and implement the present invention, and not to limit the protection scope of the present invention. All modifications made according to the spirit of the main technical scheme of the invention are covered in the protection scope of the invention.
Claims (5)
1. The low-frequency mechanical antenna based on the hybrid model source is characterized by comprising a permanent magnet (1), a magnetostrictive module (2), a first electrode (3), a piezoelectric module (5) and a second electrode (4) which are sequentially connected from top to bottom.
2. The low-frequency mechanical antenna based on the hybrid model source as claimed in claim 1, wherein the ends of the first electrode (3) and the second electrode (4) are respectively electrically connected to two ends of an excitation power source (6), and when the excitation power source (6) is powered on, the first electrode (3) and the second electrode (4) excite the piezoelectric module (5) to generate piezoelectric effect, so as to generate vibration, drive the magnetostrictive module (2) to vibrate, and generate magnetic field radiation.
3. Low frequency mechanical antenna based on hybrid phantom source according to claim 2,
when the piezoelectric module (5) generates vibration due to piezoelectric effect, the piezoelectric module is also used as a vibration source to drive the permanent magnet (1) to oscillate up and down to generate magnetic field radiation; the magnetostrictive module (2) and the magnetic field radiation generated by the permanent magnet (1) are mixed to form a final antenna electromagnetic field.
4. The low-frequency mechanical antenna based on a hybrid model source as claimed in claim 2, characterized in that the permanent magnet (1), the magnetostrictive module (2) and the piezoelectric module (5) are connected in sequence by bonding; the first electrode (3) and the second electrode (4) sandwich the piezoelectric module (5).
5. The hybrid phantom source based low frequency mechanical antenna of claim 3 wherein the frequency of the antenna electromagnetic field is 300Hz-30 kHz.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202111121221.0A CN113964493A (en) | 2021-09-24 | 2021-09-24 | Low-frequency mechanical antenna based on hybrid model source |
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| CN202111121221.0A CN113964493A (en) | 2021-09-24 | 2021-09-24 | Low-frequency mechanical antenna based on hybrid model source |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116315618A (en) * | 2023-05-08 | 2023-06-23 | 安徽大学 | Miniaturized multi-beam low-frequency/5G/6G continuous frequency adjustable antenna |
| CN116365212A (en) * | 2023-03-23 | 2023-06-30 | 中国人民解放军海军工程大学 | Magnetoelectric composite mechanical antenna architecture, architecture analysis method and architecture test method |
| CN118017223A (en) * | 2024-04-03 | 2024-05-10 | 西北工业大学 | Micro-clamping type double-frequency magneto-electric antenna and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615151A (en) * | 2020-12-17 | 2021-04-06 | 武汉理工大学 | Low-frequency mechanical antenna based on piezoelectric-piezomagnetic composite material and manufacturing method thereof |
| CN113422198A (en) * | 2021-06-22 | 2021-09-21 | 上海科技大学 | Magneto-electric mechanical resonant antenna integrated with permanent magnet |
-
2021
- 2021-09-24 CN CN202111121221.0A patent/CN113964493A/en active Pending
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112615151A (en) * | 2020-12-17 | 2021-04-06 | 武汉理工大学 | Low-frequency mechanical antenna based on piezoelectric-piezomagnetic composite material and manufacturing method thereof |
| CN113422198A (en) * | 2021-06-22 | 2021-09-21 | 上海科技大学 | Magneto-electric mechanical resonant antenna integrated with permanent magnet |
Non-Patent Citations (1)
| Title |
|---|
| 周强等: "机械式低频天线机理及其关键技术研究", 《中国科学：技术科学》, pages 75 - 78 * |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116365212A (en) * | 2023-03-23 | 2023-06-30 | 中国人民解放军海军工程大学 | Magnetoelectric composite mechanical antenna architecture, architecture analysis method and architecture test method |
| CN116365212B (en) * | 2023-03-23 | 2024-04-02 | 中国人民解放军海军工程大学 | Magnetoelectric composite mechanical antenna architecture, architecture analysis method and architecture test method |
| CN116315618A (en) * | 2023-05-08 | 2023-06-23 | 安徽大学 | Miniaturized multi-beam low-frequency/5G/6G continuous frequency adjustable antenna |
| CN116315618B (en) * | 2023-05-08 | 2023-10-31 | 安徽大学 | Miniaturized multi-beam low-frequency/5G/6G continuous frequency adjustable antenna |
| CN118017223A (en) * | 2024-04-03 | 2024-05-10 | 西北工业大学 | Micro-clamping type double-frequency magneto-electric antenna and preparation method and application thereof |
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