CN114142240A - Small-sized low-voltage metamaterial slow-wave structure and construction method thereof - Google Patents
Small-sized low-voltage metamaterial slow-wave structure and construction method thereof Download PDFInfo
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- CN114142240A CN114142240A CN202111434243.2A CN202111434243A CN114142240A CN 114142240 A CN114142240 A CN 114142240A CN 202111434243 A CN202111434243 A CN 202111434243A CN 114142240 A CN114142240 A CN 114142240A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/0006—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices
- H01Q15/0086—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices having materials with a synthesized negative refractive index, e.g. metamaterials or left-handed materials
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01P—WAVEGUIDES; RESONATORS, LINES, OR OTHER DEVICES OF THE WAVEGUIDE TYPE
- H01P3/00—Waveguides; Transmission lines of the waveguide type
- H01P3/12—Hollow waveguides
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
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- Y02D—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN INFORMATION AND COMMUNICATION TECHNOLOGIES [ICT], I.E. INFORMATION AND COMMUNICATION TECHNOLOGIES AIMING AT THE REDUCTION OF THEIR OWN ENERGY USE
- Y02D30/00—Reducing energy consumption in communication networks
- Y02D30/70—Reducing energy consumption in communication networks in wireless communication networks
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Abstract
The invention discloses a miniaturized low-voltage metamaterial slow-wave structure and a construction method thereof.A hollow waveguide and a one-dimensional periodic sequence formed by a comb-tooth-shaped complementary electric resonance unit are arranged in the center of the inside of the hollow waveguide, so that the metamaterial slow-wave structure is formed; the resonance length of the resonance unit is increased by increasing the number of comb teeth in the comb-tooth-shaped complementary electric resonance unit, so that the resonance frequency under the same hollow waveguide size and the working voltage of the metamaterial radiation source are reduced, and a miniaturized low-voltage metamaterial slow-wave structure is obtained; the invention further solves the technical problems that the size of a slow wave structure of the microwave source of the prior metamaterial is difficult to further reduce and the working voltage is high.
Description
Technical Field
The invention relates to the field of metamaterials, in particular to a miniaturized low-voltage metamaterial slow-wave structure and a construction method thereof.
Background
Along with the rapid development of artificial intelligence, a novel operation mode, namely unmanned aerial vehicle bee colony operation, is increasingly concerned about. There are three main common approaches to intercept unmanned aerial vehicles: firstly, a missile, an antiaircraft gun and the like are used for interception; secondly, detecting interference by utilizing electronic countermeasure; and thirdly, the laser and high-power microwave are utilized to carry out damage. The high-power microwave weapon has the characteristics of high combat speed, wide attack range and the like, and is paid more and more attention. The metamaterial high-power microwave source can be used as a source of a high-power microwave weapon, and along with the development of miniaturization and integration, the metamaterial high-power microwave source is beneficial to reducing the overall weight and volume of the high-power microwave weapon, so that the metamaterial high-power microwave source can more flexibly cope with increasingly complex war situations and the like in the future.
In recent years, with the development of technology, the sub-wavelength characteristic of the metamaterial enables the metamaterial to have the characteristic of miniaturization; the high coupling impedance characteristic of the metamaterial enables the metamaterial to have the advantage of high power. The main problems of the prior metamaterial radiation sources (microwave source, millimeter wave source, etc.) are that:
1) although the metamaterial slow-wave structure of the core component has miniaturization characteristics, the transverse size of the metamaterial slow-wave structure is mostly near lambda/7 at present, wherein lambda is free space wavelength corresponding to a working frequency point, and the size is further reduced by lacking an effective method;
2) the working voltage is higher, generally hundreds of kilovolts and above, which results in the bulkiness of the electron source.
Disclosure of Invention
Aiming at the defects in the prior art, the invention provides a miniaturized low-voltage metamaterial slow-wave structure and a construction method thereof, and aims to solve the technical problems that the size of the slow-wave structure of the existing metamaterial microwave source is difficult to further reduce, and the working voltage is high.
In order to achieve the purpose of the invention, the invention adopts the technical scheme that:
in one aspect, a miniaturized low-voltage metamaterial slow-wave structure, comprising: the hollow waveguide and a one-dimensional periodic sequence formed by the comb-tooth-shaped complementary electric resonance units; the one-dimensional periodic sequence is arranged in the center of the hollow waveguide.
Preferably, the one-dimensional periodic sequence includes not less than one comb-teeth-shaped complementary electrical resonance unit.
Preferably, the comb-teeth-shaped complementary electrical resonance unit is specifically:
comprises two E-shaped minimum comb-tooth complementary electric resonance units which are symmetrically arranged.
Preferably, the E-shaped minimum comb-tooth-shaped complementary electric resonance unit is provided with no less than one comb tooth.
Preferably, the one-dimensional periodic sequence is formed by comb-tooth-shaped complementary electric resonance units which are arranged along any direction in a coordinate system in a gapless and non-overlapping mode.
Preferably, the comb-teeth-shaped complementary electric resonance unit is made of metal.
On the other hand, the construction method of the miniaturized low-voltage metamaterial slow-wave structure specifically comprises the following steps:
s1, under the same air waveguide size, obtaining the resonance frequency of the symmetrical comb-tooth complementary electric resonance unit, wherein the calculation formula of the resonance frequency is as follows:
wherein f isresThe resonance frequency of the symmetrical comb-tooth-shaped complementary electric resonance unit; lresThe resonance length of the symmetrical comb-tooth-shaped complementary electric resonance unit; c is the speed of light in vacuum;
s2, calculating the number of comb teeth according to the resonance frequency of the symmetrical comb-tooth-shaped complementary electric resonance unit;
and S3, combining the number of the comb teeth by machining to obtain the miniaturized low-voltage metamaterial slow-wave structure.
The invention has the following beneficial effects:
the metamaterial slow wave structure is formed by arranging a one-dimensional periodic sequence formed by a hollow waveguide and a comb-tooth-shaped complementary electric resonance unit in the center of the inside of the hollow waveguide; the resonance length of the resonance unit is increased by increasing the number of the comb teeth in the comb-tooth-shaped complementary electric resonance unit, so that the resonance frequency under the same size of the hollow waveguide and the working voltage of the metamaterial radiation source are reduced, a miniaturized low-voltage metamaterial slow-wave structure is obtained, and the technical problems that the size of the slow-wave structure of the current metamaterial microwave source is difficult to further reduce and the working voltage is high are solved.
Drawings
FIG. 1 is a small-sized low-voltage metamaterial slow-wave structure provided by the present invention;
FIG. 2 is a schematic structural diagram of a metamaterial slow-wave structure A according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a metamaterial slow-wave structure B according to an embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a metamaterial slow-wave structure C according to an embodiment of the present invention;
FIG. 5 is a graph comparing dispersion curves of a metamaterial slow-wave structure A, a metamaterial slow-wave structure B and a metamaterial slow-wave structure C in an embodiment of the present invention;
fig. 6 is a comparison graph of working voltage curves of the metamaterial slow-wave structure a, the metamaterial slow-wave structure B, and the metamaterial slow-wave structure C in the embodiment of the invention.
Wherein: 1-a miniaturized low-voltage metamaterial slow-wave structure formed by periodically arranging symmetrical comb-tooth-shaped complementary electric resonance units along the Z-axis direction; 2-a hollow core waveguide; a-the outer side length of the symmetrical comb-tooth complementary electric resonance unit; b-the inner edge length of the symmetrical comb-tooth complementary electric resonance unit; lb-total comb length; wb-total width of comb teeth; lg-comb length; sA, sB and sC-are respectively the comb tooth widths of the metamaterial slow wave structure A, B, C; gA. gB and gC-are respectively the width of the central comb teeth of the metamaterial slow-wave structure A, B, C; d-comb pitch; d 0-width of central slot of symmetrical comb-teeth complementary electric resonance unit.
Detailed Description
The following description of the embodiments of the present invention is provided to facilitate the understanding of the present invention by those skilled in the art, but it should be understood that the present invention is not limited to the scope of the embodiments, and it will be apparent to those skilled in the art that various changes may be made without departing from the spirit and scope of the invention as defined and defined in the appended claims, and all matters produced by the invention using the inventive concept are protected.
The invention provides a miniaturized low-voltage metamaterial slow-wave structure and a construction method thereof,
in one aspect, as shown in fig. 1, a miniaturized low-voltage metamaterial slow-wave structure includes: the hollow waveguide and a one-dimensional periodic sequence formed by the comb-tooth-shaped complementary electric resonance units; and the one-dimensional periodic sequence is arranged in the center of the inside of the hollow waveguide.
Preferably, the one-dimensional periodic sequence includes not less than one comb-teeth-shaped complementary electrical resonance unit.
Preferably, the comb-teeth-shaped complementary electrical resonance unit is specifically:
comprises two E-shaped minimum comb-tooth complementary electric resonance units which are symmetrically arranged.
Preferably, the E-shaped minimum comb-tooth-shaped complementary electric resonance unit is provided with no less than one comb tooth.
Preferably, the one-dimensional periodic array is formed by arranging comb-tooth-shaped complementary electric resonance units along any direction in a coordinate system in a gapless and non-overlapping mode among the units.
Optionally, the one-dimensional periodic array is formed by comb-tooth-shaped complementary electric resonance units which are arranged along the Z direction in the coordinate system in a gapless and non-overlapping manner.
Preferably, the comb-teeth-shaped complementary electric resonance unit is made of metal.
Optionally, the comb-tooth-shaped complementary electrical resonance unit is made of all metals, theoretically, conventional metals are only needed, but in order to reduce loss, the higher the electrical conductivity of the metals is, the better the electrical conductivity of the metals is, and materials such as copper and aluminum are preferred; in the construction process, mechanical processing can be directly adopted, etching is not needed, and the metal material is adopted, so that the functional loss of the small-sized low-voltage metamaterial slow-wave structure is further reduced.
On the other hand, the construction method of the miniaturized low-voltage metamaterial slow-wave structure specifically comprises the following steps:
s1, under the same air waveguide size, obtaining the resonance frequency of the symmetrical comb-tooth complementary electric resonance unit, wherein the calculation formula of the resonance frequency is as follows:
wherein f isresIs symmetrical comb-shaped complementationA resonant frequency of the electrical resonant unit; lresThe resonance length of the symmetrical comb-tooth-shaped complementary electric resonance unit; c is the speed of light in vacuum;
s2, calculating the number of comb teeth according to the resonance frequency of the symmetrical comb-tooth-shaped complementary electric resonance unit;
and S3, combining the number of the comb teeth by machining to obtain the miniaturized low-voltage metamaterial slow-wave structure.
Optionally, the invention is based on a comb-tooth structure, and the resonance length of the resonance unit is increased by increasing the number of the comb teeth, so that the resonance frequency is reduced under the same size of the hollow waveguide;
the filtering frequency is reduced, and the corresponding free space wavelength lambda is lengthened, so that the transverse electrical size of the metamaterial slow-wave structure is reduced, and the miniaturization of the metamaterial slow-wave structure is realized; and meanwhile, the corresponding dispersion curve moves downwards, namely the working voltage point of the metamaterial slow-wave structure moves downwards, so that the working voltage of the metamaterial radiation source is reduced.
The invention provides three embodiments for carrying out effect verification on the miniaturized low-voltage metamaterial slow-wave structure provided by the invention;
as shown in fig. 2, 3, and 4, in the embodiment of the present invention, a metamaterial slow-wave structure a, a metamaterial slow-wave structure B, and a metamaterial slow-wave structure C are provided; the metamaterial slow-wave structure A, the metamaterial slow-wave structure B and the metamaterial slow-wave structure C are respectively and periodically arranged along the Z-axis direction, and the units in each periodic structure are arranged in a gapless non-overlapping and close manner (in order to enable a single comb-shaped complementary electric resonance unit in the figure to be capable of visually showing the specific shape and structure, the units are not drawn to be close to each other); wherein, the specific parameters of each symmetrical comb-tooth complementary electric resonance unit are as follows: the length a of the outer edge of the symmetrical comb-tooth-shaped complementary electric resonance unit is 14.5; the length b of the inner side of the symmetrical comb-tooth-shaped complementary electric resonance unit is 14; the total length lb of the comb teeth is 13; the total width wb of the comb teeth is 13; the length lg of the comb teeth is 5; the comb tooth widths sA, sB and sC of the metamaterial slow-wave structure A, B, C are 5.25, 1.4 and 0.7 respectively; the widths gA, gB and gC of the central comb teeth of the metamaterial slow-wave structure A, B, C are 1.5, 1.6 and 1 respectively; the comb tooth spacing d is 1; the width d0 of the central slot of the symmetrical comb-tooth complementary electric resonance unit is 0.5;
as shown in fig. 5, the resonant frequencies corresponding to the three structures of the metamaterial slow-wave structure A, B, C are 3.31GHz, 2.90GHz, and 2.60GHz with the frequency corresponding to the zero-degree phase, and the frequencies corresponding to the 100-degree phase are: 2.93GHz, 2.52GHz and 2.26 GHz; it can be known that as the number of the comb teeth of the resonant unit increases, the resonant frequency thereof gradually decreases, and further the transverse electrical dimensions of the metamaterial slow-wave structure corresponding to the three structures A, B, C of the metamaterial slow-wave structure are respectively 0.14 λ, 0.12 λ and 0.11 λ corresponding to the free space wavelength λ of the working frequency point; the resonance frequency of the resonance unit is gradually reduced along with the increase of the number of the comb teeth of the resonance unit, and the side length of the corresponding free space wavelength is obtained, so that the transverse electric size of the metamaterial slow-wave structure is relatively reduced, and the miniaturization of the metamaterial slow-wave structure is realized;
as shown in fig. 6, the working voltages corresponding to the phases of 100 degrees of the three structures of the metamaterial slow wave structure A, B, C are: 4kV, 58kV and 45 kV; therefore, as the number of the comb teeth of the resonant unit is increased, the working voltage of the resonant unit is gradually reduced, the dispersion curve is reduced, and the reduction of the working voltage of the radiation source of the metamaterial slow-wave structure is realized.
The present invention is described with reference to flowchart illustrations and/or block diagrams of methods, apparatus (systems), and computer program products according to embodiments of the invention. It will be understood that each flow and/or block of the flow diagrams and/or block diagrams, and combinations of flows and/or blocks in the flow diagrams and/or block diagrams, can be implemented by computer program instructions. These computer program instructions may be provided to a processor of a general purpose computer, special purpose computer, embedded processor, or other programmable data processing apparatus to produce a machine, such that the instructions, which execute via the processor of the computer or other programmable data processing apparatus, create means for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be stored in a computer-readable memory that can direct a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory produce an article of manufacture including instruction means which implement the function specified in the flowchart flow or flows and/or block diagram block or blocks.
These computer program instructions may also be loaded onto a computer or other programmable data processing apparatus to cause a series of operational steps to be performed on the computer or other programmable apparatus to produce a computer implemented process such that the instructions which execute on the computer or other programmable apparatus provide steps for implementing the functions specified in the flowchart flow or flows and/or block diagram block or blocks.
The principle and the implementation mode of the invention are explained by applying specific embodiments in the invention, and the description of the embodiments is only used for helping to understand the method and the core idea of the invention; meanwhile, for a person skilled in the art, according to the idea of the present invention, there may be variations in the specific embodiments and the application scope, and in summary, the content of the present specification should not be construed as a limitation to the present invention.
It will be appreciated by those of ordinary skill in the art that the embodiments described herein are intended to assist the reader in understanding the principles of the invention and are to be construed as being without limitation to such specifically recited embodiments and examples. Those skilled in the art can make various other specific changes and combinations based on the teachings of the present invention without departing from the spirit of the invention, and these changes and combinations are within the scope of the invention.
Claims (7)
1. A miniaturized low-voltage metamaterial slow-wave structure, comprising: the hollow waveguide and a one-dimensional periodic sequence formed by the comb-tooth-shaped complementary electric resonance units; the one-dimensional periodic sequence is arranged in the center of the hollow waveguide.
2. The miniaturized low-voltage metamaterial slow-wave structure of claim 1, wherein the one-dimensional periodic sequence includes not less than one comb-shaped complementary electrical resonance unit.
3. The miniaturized low-voltage metamaterial slow-wave structure as claimed in claim 2, wherein the comb-shaped complementary electrical resonance units are specifically:
comprises two E-shaped minimum comb-tooth complementary electric resonance units which are symmetrically arranged.
4. The miniaturized low-voltage metamaterial slow-wave structure of claim 3, wherein there is not less than one comb in the E-shaped minimum comb-shaped complementary electrical resonance unit.
5. The structure of claim 1, wherein the one-dimensional periodic sequence is formed by comb-shaped complementary electrical resonance units arranged along any direction of a coordinate system without gaps and overlaps between the units.
6. The small-sized low-voltage metamaterial slow-wave structure as claimed in claim 1, wherein the comb-shaped complementary electrical resonance units are made of metal.
7. A construction method of a miniaturized low-voltage metamaterial slow-wave structure is applied to the miniaturized low-voltage metamaterial slow-wave structure as claimed in any one of claims 1 to 6, and is characterized by comprising the following steps:
s1, under the same air waveguide size, obtaining the resonance frequency of the symmetrical comb-tooth complementary electric resonance unit, wherein the calculation formula of the resonance frequency is as follows:
wherein f isresThe resonance frequency of the symmetrical comb-tooth-shaped complementary electric resonance unit; lresThe resonance length of the symmetrical comb-tooth-shaped complementary electric resonance unit; c is in vacuumThe speed of light of (c);
s2, calculating the number of comb teeth according to the resonance frequency of the symmetrical comb-tooth-shaped complementary electric resonance unit;
and S3, combining the number of the comb teeth by machining to obtain the miniaturized low-voltage metamaterial slow-wave structure.
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