CN117410695A - Magnetoelectric antenna based on magnetoelectric composite material - Google Patents
Magnetoelectric antenna based on magnetoelectric composite material Download PDFInfo
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- CN117410695A CN117410695A CN202311216810.6A CN202311216810A CN117410695A CN 117410695 A CN117410695 A CN 117410695A CN 202311216810 A CN202311216810 A CN 202311216810A CN 117410695 A CN117410695 A CN 117410695A
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- layer
- magnetoelectric
- permanent magnet
- antenna
- magnetostrictive
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- 239000002131 composite material Substances 0.000 title claims abstract description 28
- 239000000463 material Substances 0.000 claims description 28
- 238000000034 method Methods 0.000 claims description 16
- 229910045601 alloy Inorganic materials 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 7
- 230000005415 magnetization Effects 0.000 claims description 5
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- 238000001755 magnetron sputter deposition Methods 0.000 claims description 4
- 238000006722 reduction reaction Methods 0.000 claims description 4
- 229910001329 Terfenol-D Inorganic materials 0.000 claims description 3
- QJVKUMXDEUEQLH-UHFFFAOYSA-N [B].[Fe].[Nd] Chemical compound [B].[Fe].[Nd] QJVKUMXDEUEQLH-UHFFFAOYSA-N 0.000 claims description 3
- WBWJXRJARNTNBL-UHFFFAOYSA-N [Fe].[Cr].[Co] Chemical compound [Fe].[Cr].[Co] WBWJXRJARNTNBL-UHFFFAOYSA-N 0.000 claims description 3
- 229910002113 barium titanate Inorganic materials 0.000 claims description 3
- JRPBQTZRNDNNOP-UHFFFAOYSA-N barium titanate Chemical compound [Ba+2].[Ba+2].[O-][Ti]([O-])([O-])[O-] JRPBQTZRNDNNOP-UHFFFAOYSA-N 0.000 claims description 3
- 229910052451 lead zirconate titanate Inorganic materials 0.000 claims description 3
- HFGPZNIAWCZYJU-UHFFFAOYSA-N lead zirconate titanate Chemical compound [O-2].[O-2].[O-2].[O-2].[O-2].[Ti+4].[Zr+4].[Pb+2] HFGPZNIAWCZYJU-UHFFFAOYSA-N 0.000 claims description 3
- 229910000697 metglas Inorganic materials 0.000 claims description 3
- 229910001172 neodymium magnet Inorganic materials 0.000 claims description 3
- ZBSCCQXBYNSKPV-UHFFFAOYSA-N oxolead;oxomagnesium;2,4,5-trioxa-1$l^{5},3$l^{5}-diniobabicyclo[1.1.1]pentane 1,3-dioxide Chemical compound [Mg]=O.[Pb]=O.[Pb]=O.[Pb]=O.O1[Nb]2(=O)O[Nb]1(=O)O2 ZBSCCQXBYNSKPV-UHFFFAOYSA-N 0.000 claims description 3
- BITYAPCSNKJESK-UHFFFAOYSA-N potassiosodium Chemical compound [Na].[K] BITYAPCSNKJESK-UHFFFAOYSA-N 0.000 claims description 3
- 238000001556 precipitation Methods 0.000 claims description 3
- 229910052761 rare earth metal Inorganic materials 0.000 claims description 3
- 150000002910 rare earth metals Chemical class 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 claims description 2
- 229910000828 alnico Inorganic materials 0.000 claims 1
- 229920006335 epoxy glue Polymers 0.000 claims 1
- 239000007888 film coating Substances 0.000 claims 1
- 238000009501 film coating Methods 0.000 claims 1
- 230000009286 beneficial effect Effects 0.000 abstract description 5
- 239000003822 epoxy resin Substances 0.000 abstract description 4
- 229920000647 polyepoxide Polymers 0.000 abstract description 4
- 230000010354 integration Effects 0.000 abstract description 3
- 239000000853 adhesive Substances 0.000 abstract description 2
- 230000001070 adhesive effect Effects 0.000 abstract description 2
- 230000005855 radiation Effects 0.000 description 5
- 238000010586 diagram Methods 0.000 description 4
- 238000004891 communication Methods 0.000 description 3
- 238000004519 manufacturing process Methods 0.000 description 3
- -1 aluminum nickel cobalt Chemical compound 0.000 description 2
- 230000005672 electromagnetic field Effects 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 230000005284 excitation Effects 0.000 description 2
- 230000010355 oscillation Effects 0.000 description 2
- 238000000018 DNA microarray Methods 0.000 description 1
- 238000004026 adhesive bonding Methods 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000000151 deposition Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000005670 electromagnetic radiation Effects 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000004065 semiconductor Substances 0.000 description 1
- 230000035945 sensitivity Effects 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 230000026683 transduction Effects 0.000 description 1
- 238000010361 transduction Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/36—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith
- H01Q1/38—Structural form of radiating elements, e.g. cone, spiral, umbrella; Particular materials used therewith formed by a conductive layer on an insulating support
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- Details Of Aerials (AREA)
Abstract
The invention provides a magnetoelectric antenna based on a magnetoelectric composite material, which is of a multilayer composite structure and comprises a piezoelectric layer, a magnetostrictive layer, an electrode and a permanent magnetic film layer, wherein the magnetostrictive layer comprises a first magnetostrictive layer and a second magnetostrictive layer which are respectively arranged on the upper side and the lower side of the piezoelectric layer; the electrodes are distributed between the piezoelectric layer and the magnetostrictive layer and are divided into two electrodes at the upper side and the lower side, and the piezoelectric layer and the magnetostrictive layer are adhered through epoxy resin adhesive to form a composite structure. One side of the single-side or double-side magnetostrictive layer is provided with a permanent magnet film layer to realize loading of a bias magnetic field, and the permanent magnet film layer is tightly connected with the magnetostrictive layer. The permanent magnet film loading mode realizes the bias magnetic field, thereby not only reducing the volume and the weight of the magnetoelectric antenna and being beneficial to miniaturized integration, but also improving the uniformity of the bias magnetic field and effectively improving the performance of the magnetoelectric antenna.
Description
Technical Field
The invention relates to the technical field of wireless communication, in particular to a magnetoelectric antenna based on a magnetoelectric composite material.
Background
Very Low Frequency (VLF) communication has great application potential in the fields of submarine, underwater and underground communication, navigation, positioning and the like, whereas very low frequency antennas based on traditional electromagnetic theory are thousands or even tens of kilometers in length. The novel antenna scheme based on the magnetoelectric composite material is characterized in that the magnetoelectric composite material is used as a transduction device, an electric signal is converted into mechanical energy through a piezoelectric material, the mechanical energy is converted into a changed magnetic field through a magnetostrictive material, so that the radiation of an electromagnetic field is realized, and the novel antenna scheme is different from the electromagnetic radiation scheme of the traditional antenna, because the wavelength of a mechanical sound wave is far smaller than that of a same-frequency electromagnetic wave, the electromagnetic wave excitation process by the mechanical wave is not limited by the current oscillation space size, an impedance matching circuit is not needed, and the efficient and miniaturized low-frequency radiation is hopeful to be realized.
In addition, the working frequency of the magnetoelectric antenna based on the magnetoelectric composite material can reach the microwave frequency range by utilizing the MEMS process or the semiconductor process, and compared with the most advanced small magnetoelectric antenna, the size of the magnetoelectric antenna can be reduced by 2 orders of magnitude. The antenna is particularly suitable for chip integrated antenna technology due to the characteristics of small size and high gain. Can be applied to the fields of IoT (internet of things), implantable biochips, RFID and the like, and is expected to become an important development direction of future miniaturized magneto-electric antennas.
At present, two separated permanent magnet blocks with the same magnetization direction are adopted by the magnetoelectric antenna and are respectively placed at two ends of the magnetoelectric antenna to be used as bias magnetic fields. On the one hand, the size and the weight of the magnetoelectric antenna are greatly increased, miniaturization and integration are not facilitated, and in addition, the bias field uniformity applied by the arrangement is poor, so that the performance of the magnetoelectric antenna is seriously affected.
Disclosure of Invention
The technical solution of the invention is as follows: the invention provides the magnetoelectric antenna based on the magnetoelectric composite material, which overcomes the defects of the prior art, greatly reduces the size and the weight of the magnetoelectric antenna and is also beneficial to the consistency of antenna processing. In addition, uniform magnetic field loading is beneficial to the operation of the magnetoelectric antenna in a better resonance state. The magnetoelectric antenna loaded by the permanent magnetic film layer is also beneficial to designing and manufacturing the magnetoelectric antenna in the microwave frequency range, and can be used for designing a chip integrated antenna.
The technical scheme of the invention is as follows: the magnetoelectric antenna is of a multilayer composite structure and comprises a piezoelectric layer, a magnetostrictive layer, an electrode and a permanent magnetic film layer; the magnetostrictive layers comprise a first magnetostrictive layer and a second magnetostrictive layer which are respectively arranged on the upper side and the lower side of the piezoelectric layer; the first electrode is arranged between the piezoelectric layer and the first magnetostriction layer, and the second electrode is arranged between the piezoelectric layer and the second magnetostriction layer; the permanent magnet film layer is arranged on the side face of the single-side or double-side magnetostriction layer to realize loading of the bias magnetic field, and the permanent magnet film layer is connected with the magnetostriction layer by adopting a film plating method.
Furthermore, the piezoelectric layer and the magnetostrictive layer are bonded through epoxy resin glue to form a composite structure.
Furthermore, the magnetoelectric antenna adopts a permanent magnet film layer to realize the setting of the magnetoelectric antenna bias magnetic field, and the strength of the bias magnetic field is controlled by the thickness of the permanent magnet film layer or doping other materials.
Furthermore, one end of the magnetoelectric antenna in the length direction is connected with the fixing piece to realize fixation.
Further, the electrode is an interdigital electrode or a single electrode.
Further, the piezoelectric material of the piezoelectric layer is one or any combination of a lead zirconate titanate-based piezoelectric material, a lead magnesium niobate-based piezoelectric material, a barium titanate-based piezoelectric material or a potassium sodium niobate-based piezoelectric material.
Further, the magnetostrictive layer is made of Metglas, terfenol-D, feGa or FeCoB.
Furthermore, the permanent magnet film layer material is an aluminum nickel cobalt permanent magnet alloy, an iron chromium cobalt permanent magnet alloy, neodymium iron boron or rare earth permanent magnet.
Further, the magnetization direction of the permanent magnetic film layer is the length direction of the magnetoelectric antenna.
Furthermore, the magneto-electric antenna realizes the preparation of the permanent magnet film layer by adopting a chemical reduction method, a magnetron sputtering method or a pulse laser precipitation method on the magnetostrictive layer.
Compared with the prior art, the invention has the beneficial effects that:
(1) The magnetoelectric antenna based on the magnetoelectric composite material provided by the invention realizes the bias magnetic field in a permanent magnet film loading mode, thereby reducing the volume and the weight of the magnetoelectric antenna, facilitating miniaturization integration, improving the uniformity of the bias magnetic field and effectively improving the performance of the magnetoelectric antenna.
(2) The invention is suitable for designing and manufacturing the low-frequency magnetoelectric antenna and is also suitable for designing and manufacturing the magnetoelectric antenna of the microwave frequency band.
(3) The invention is suitable for chip integrated antennas.
Drawings
FIG. 1 is a block diagram of a magneto-electric antenna of the present invention;
FIG. 2 is a graph comparing radiation intensities of a magneto-electric antenna according to an embodiment of the present invention with those of the prior art;
fig. 3 is a schematic diagram illustrating the operation of the magnetoelectric antenna according to an embodiment of the present invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings.
A magneto-electric antenna based on magneto-electric composite material is prepared from permanent-magnet material through preparing permanent-magnet film on three-layer magneto-electric composite material by chemical reduction method, magnetron sputtering method, pulse laser deposition method, and directional magnetizing.
FIG. 1 is a structural diagram of a magneto-electric antenna according to an embodiment of the present invention, as shown in FIG. 1, the magneto-electric antenna includes a permanent magnet film layer, a magnetostrictive layer, an electrode layer, and a piezoelectric layer 1; when the antenna is used as a transmitting antenna, an input electric signal is loaded on electrodes on two sides of the piezoelectric layer 1, the piezoelectric layer 1 is driven by the voltage signal, displacement oscillation is generated on the piezoelectric layer 1 to form elastic waves, the elastic waves are transmitted into a magnetostrictive material, and the change of the magnetization state of the magnetostrictive material is caused, so that the radiation of an electromagnetic field is realized.
The magnetostrictive layers comprise a first magnetostrictive layer 2 and a second magnetostrictive layer 3 which are respectively arranged on the upper side and the lower side of the piezoelectric layer 1; the electrodes are distributed between the piezoelectric layer and the magnetostrictive layer and are divided into two electrodes (namely a first electrode 4 and a second electrode 5) at the upper side and the lower side, and the piezoelectric layer and the magnetostrictive layer form a composite structure through epoxy resin adhesive bonding. The permanent magnet film layer 6 is arranged on the outer side of the single-side or double-side magnetostrictive layer to realize loading of the bias magnetic field, and can be tightly connected with or separated from the magnetostrictive layer.
The magnetoelectric antenna adopts the permanent magnet film layer 6 to realize the setting of the magnetoelectric antenna bias magnetic field, and the strength of the bias magnetic field can be designed and controlled through the film layer thickness or doping other materials.
Electrodes are arranged on the upper surface and the lower surface of the piezoelectric layer 1 and used for excitation, and the electrodes are interdigital electrodes or single electrodes.
The piezoelectric material of the piezoelectric layer 1 is one or any combination of piezoelectric single crystal materials or piezoelectric ceramic materials such as lead zirconate titanate-based piezoelectric materials, lead magnesium niobate-based piezoelectric materials, barium titanate-based piezoelectric materials or potassium sodium niobate-based piezoelectric materials.
The magnetostrictive layer is made of Metglas, terfenol-D, feGa or FeCoB.
The permanent magnet film layer material is aluminum nickel cobalt permanent magnet alloy, iron chromium cobalt permanent magnet alloy, neodymium iron boron, rare earth permanent magnet and the like.
The magneto-electric antenna can be used for a chip integrated antenna.
The magneto-electric antenna may be used as a magnetic field measurement.
The magneto-electric antenna can be used for an underwater low-frequency receiving antenna.
Preferably, the magnetostrictive material is a FeGa alloy;
preferably, the magnetization direction of the permanent magnetic film layer is the length direction of the magneto-electric antenna;
preferably, when the magneto-electric antenna is a receiving antenna, the thickness of the magnetostrictive layer only needs to be in a micron size in order to ensure the receiving sensitivity;
preferably, the magneto-electric antenna is in an L-T mode (the piezoelectric layer stretches in the thickness direction, and the magnetostrictive layer stretches in the length direction).
According to the embodiment of the invention, one end of the magnetoelectric antenna in the length direction is fixedly connected with the fixing piece, so that the whole antenna forms a cantilever structure.
The magnetoelectric antenna in the embodiment of the invention can be provided with the supporting structure at the standing wave point of the elastic wave of the piezoelectric layer.
The permanent magnet film layer and the magnetostriction layer in the embodiment of the invention are tightly bonded through the epoxy resin adhesive.
The permanent magnet film layer in the embodiment of the invention is prepared by adopting a plurality of coating methods such as a chemical reduction method, a magnetron sputtering method, a pulse laser precipitation method and the like on the magnetostriction layer.
The electrode layer in the embodiment of the invention is connected with the receiving/transmitting device through an SMA connector or a TNC connector.
The electrode layer in the embodiment of the invention is an interdigital electrode or an electrode which completely covers the whole piezoelectric layer.
The radiation intensity pairs of the magnetoelectric antenna according to the embodiment of the present invention and the prior art are shown in fig. 2. As can be seen from FIG. 2, the intensity of the radiated magnetic field of the magneto-electric antenna adopting the scheme of the invention is improved by 34.4% compared with the prior art adopting the separation magnet.
Fig. 3 is a schematic working diagram of a magneto-electric antenna according to an embodiment of the present invention, where the magneto-electric antenna in fig. 3 may be used as a transmitting antenna or a receiving antenna.
What is not described in detail in the present specification is a well known technology to those skilled in the art.
Claims (10)
1. The magnetoelectric antenna based on the magnetoelectric composite material is characterized by being of a multilayer composite structure and comprising a piezoelectric layer (1), a magnetostrictive layer, an electrode and a permanent magnet film layer (6); the magnetostrictive layers comprise a first magnetostrictive layer (2) and a second magnetostrictive layer (3) which are respectively arranged on the upper side and the lower side of the piezoelectric layer (1); the first electrode (4) is arranged between the piezoelectric layer (1) and the first magnetostriction layer (2), and the second electrode (5) is arranged between the piezoelectric layer (1) and the second magnetostriction layer (3); the permanent magnet film layer (6) is arranged on the side face of the single-side or double-side magnetostriction layer to realize loading of a bias magnetic field, and the permanent magnet film layer (6) is connected with the magnetostriction layer by adopting a film coating method.
2. Magneto-electric antenna based on magneto-electric composite material according to claim 1, characterized in that the piezoelectric layer (1) and magnetostrictive layer are bonded by epoxy glue to form a composite structure.
3. The magnetoelectric antenna based on the magnetoelectric composite material according to claim 1, wherein the magnetoelectric antenna adopts a permanent magnet film layer to realize the setting of the magnetoelectric antenna bias magnetic field, and the strength of the bias magnetic field is controlled by the thickness of the permanent magnet film layer or doping other materials.
4. The magnetoelectric antenna based on the magnetoelectric composite material according to claim 1, wherein one end of the magnetoelectric antenna in the length direction is connected with a fixing member to achieve fixation.
5. The magnetoelectric antenna based on the magnetoelectric composite material according to claim 1, wherein said electrode is an interdigital electrode or a single electrode.
6. A magnetoelectric antenna based on a magnetoelectric composite material according to claim 1, characterized in that the piezoelectric material of said piezoelectric layer (1) is one or any combination of a lead zirconate titanate based piezoelectric material, a lead magnesium niobate based piezoelectric material, a barium titanate based piezoelectric material or a potassium sodium niobate based piezoelectric material.
7. The magnetoelectric antenna based on the magnetoelectric composite material according to claim 1, characterized in that the magnetostrictive layer is made of Metglas, terfenol-D, feGa or FeCoB.
8. The magnetoelectric antenna based on the magnetoelectric composite material according to claim 1, wherein the permanent magnet film material is an alnico-based permanent magnet alloy, an iron-chromium-cobalt-based permanent magnet alloy, neodymium-iron-boron or rare earth permanent magnet.
9. The magnetoelectric antenna based on the magnetoelectric composite material according to claim 1, wherein the magnetization direction of the permanent magnetic film layer is the length direction of the magnetoelectric antenna.
10. The magnetoelectric antenna based on the magnetoelectric composite material according to claim 1, wherein the magnetoelectric antenna realizes the preparation of the permanent magnet film layer by adopting a chemical reduction method, a magnetron sputtering method or a pulse laser precipitation method on the magnetostrictive layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311216810.6A CN117410695A (en) | 2023-09-19 | 2023-09-19 | Magnetoelectric antenna based on magnetoelectric composite material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311216810.6A CN117410695A (en) | 2023-09-19 | 2023-09-19 | Magnetoelectric antenna based on magnetoelectric composite material |
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| Publication Number | Publication Date |
|---|---|
| CN117410695A true CN117410695A (en) | 2024-01-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311216810.6A Pending CN117410695A (en) | 2023-09-19 | 2023-09-19 | Magnetoelectric antenna based on magnetoelectric composite material |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
-
2023
- 2023-09-19 CN CN202311216810.6A patent/CN117410695A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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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