CN205303676U - Super material structure , antenna house and antenna system - Google Patents
Super material structure , antenna house and antenna system Download PDFInfo
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- CN205303676U CN205303676U CN201521140791.4U CN201521140791U CN205303676U CN 205303676 U CN205303676 U CN 205303676U CN 201521140791 U CN201521140791 U CN 201521140791U CN 205303676 U CN205303676 U CN 205303676U
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Abstract
A antenna house and antenna system that the super material structure of and contain super material structure is disclosed. Super material structure includes: first medium base plate, and lie in a plurality of electrically conductive geometry on the first medium base plate, wherein, every electrically conductive geometry is central symmetry distribution pattern to adjacent electrically conductive geometry separates each other. Electrically conductive geometry's the shape and the change of size lead to electromagnetic wave response characteristic's change. Electromagnetic that this antenna house not only can improve working frequency band pass through the wave property can, can pierce through as the electromagnetic that the wave filter restraines non - working frequency band moreover to can improve the SNR of antenna work.
Description
Technical field
This utility model relates to antenna house, more particularly, it relates to metamaterial structure and comprise antenna house and the antenna system of metamaterial structure.
Background technology
Antenna system generally includes antenna house. The purpose of antenna house is to protect an antenna from the impact of wind and rain, ice and snow, sand and dust and solar radiation etc., makes antenna system service behaviour more stable, reliable. Meanwhile, antenna house can alleviate the abrasion of antenna system, corrosion and aging, increases the service life. But antenna house is the barrier before antenna, can produce aerial radiation ripple to absorb and reflection, change the free space Energy distribution of antenna, affect the electric property of antenna to a certain extent.
Antenna house should have certain mechanical strength on the one hand, and to protect the antenna of inside, the electromagnetic wave shoulding also allow for working frequency range on the other hand efficiently penetrates, to arrive the antenna of inside. Existing antenna house is substantially pure material antenna house, the main effect to protection antenna. Electromagnetic efficiently penetrate to improve, it is possible to adopt half-wavelength theory to carry out material thickness design. When material thickness is working frequency range electromagnetic wavelength the 1/2 of antenna house, electromagnetic wave penetrance is best. Therefore, the electromagnetic wavelength of working frequency range is depended in the thickness design of pure material antenna house. Along with the electromagnetic wavelength of working frequency range increases, then the thickness of antenna house should also be as increasing. The weight of antenna house is likely to increase to the degree being difficult to apply. On the other hand, the wave transparent Performance comparision of common material is homogeneous, wave transparent in working frequency range, and its successive bands wave transmission effect is also excellent, the normal operation of the easy potato masher antenna of wave transparent outside working frequency range.
Prepare material many employings dielectric constant of antenna house and loss angle tangent is low, mechanical strength is high material at present, such as fiberglass, epoxy resin, high molecular polymer etc. The structure of antenna house mostly is uniform single walled structure, sandwich and spatial skeleton structure etc. Need to take into account the factors such as operation wavelength, antenna house size and dimension, environmental condition, material therefor performance in electric and structure due to the design of radome wall thickness, therefore wave transparent performance is likely to poor, and working frequency range is narrower. For different frequency ranges, it is necessary to change antenna house, cause the waste of resource and the raising of equipment cost.
Utility model content
The purpose of this utility model is in that to provide a kind of broadband transparent structure that can improve wave transparent performance.
The technical problems to be solved in the utility model is in that, for the defect that the above-mentioned wave transparent poor-performing of prior art, working frequency range are narrower, it is provided that metamaterial structure and comprise antenna house and the antenna system of metamaterial structure.
According to one side of the present utility model, it is provided that a kind of metamaterial structure, including: first medium substrate; And it is positioned at the multiple conduction geometries on first medium substrate, and wherein, symmetrical distribution pattern centered by each conduction geometry, and adjacent conduction geometry is spaced apart.
Preferably, described centrosymmetry distribution patterns is at least one pattern in square shape, I-shaped, snowflake shape and matrix pattern.
Preferably, described conduction geometry is matrix pattern pattern, including: the square shape housing being made up of four sides, housing has the first length, the first width and the first live width; Connecting the first lines of one group relative two side, the first lines have the second live width; And connecting another the second lines organizing two relative sides, the second lines have the 3rd live width; Wherein, the shape and size of described conduction geometry are set to obtain desired electromagnetic response characteristic.
Preferably, one group of midpoint relative to two sides described in described first line and curve connection.
Preferably, the midpoint of two sides that another group described in described second line and curve connection is relative.
Preferably, the first length is unequal with the first width, to mate the polarised direction of antenna.
Preferably, the second live width is unequal with the 3rd live width, to mate the polarised direction of antenna.
Preferably, the first live width and the second live width, the 3rd live width are unequal, to regulate the steep of the cut-off waveform of electromagnetic response curve.
Preferably, the physical form of conduction geometry is chosen from the one in solid, liquid, stream-like body and powder.
Preferably, conduction geometry is made up of the conductive material of liquid, and is contained in one of cavity, pipeline and capsule to limit its shape.
Preferably, first medium substrate by relative dielectric constant more than 2, the loss angle tangent material less than 0.1 forms.
According to another aspect of the present utility model, it is provided that a kind of antenna house, including: above-mentioned metamaterial structure; And it is positioned at the second medium substrate on first medium substrate, wherein, the plurality of conduction geometry is clipped between first medium substrate and second medium substrate.
Preferably, first medium substrate and second medium substrate are tabular.
Preferably, first medium substrate and second medium substrate are curved, and the plurality of construction unit is conformally formed on the first surface of first medium substrate.
Preferably, according to wave transparent performance and filtering performance at least one arrange in the zones of different of described antenna house the shape and size of construction unit at least one.
According to another aspect of the present utility model, it is provided that a kind of antenna system, it is characterised in that including antenna and above-mentioned antenna house, described antenna house covers on antenna.
Antenna house according to embodiment of the present utility model is in the working frequency range of 0-1.5GHz, and electromagnetic transmitance is high. Antenna house can until the effect of solid air, and electromagnetic wave is outside through the antenna within antenna house arrival from antenna house. Outside working frequency range, electromagnetic reflection or decay are obvious, thus being difficult to from antenna house outside through the antenna within antenna house arrival. This antenna house is possible not only to play the effect of wave transparent, and can play the effect of wave filter, thus improving the signal to noise ratio of Antenna Operation. By regulating the conduction shape of geometry, size, it is also possible to the polarization of coupling antenna, such that it is able to allow the transmission of the incident electromagnetic wave of selected polarised direction to greatest extent, thus improving the signal to noise ratio of antenna further.
Antenna house according to embodiment of the present utility model can realize the impedance matching with air, to increase the transmission of incident electromagnetic wave to greatest extent, decreases the restriction to material thickness and dielectric constant when traditional antenna cover designs.Antenna system according to embodiment of the present utility model is at antenna plus after antenna house, and the radianting capacity of antenna obtains reinforcement, is effectively increased gain.
Accompanying drawing explanation
By referring to the accompanying drawing description to this utility model embodiment, of the present utility model above-mentioned and other objects, features and advantages will be apparent from, in the accompanying drawings:
Fig. 1 illustrates the schematic diagram of the construction unit of the metamaterial structure according to embodiment of the present utility model;
Fig. 2 illustrates the structural representation of the antenna house according to embodiment of the present utility model;
Fig. 3 illustrates the S parameter emulation schematic diagram of the antenna house according to embodiment of the present utility model.
Detailed description of the invention
It is more fully described this utility model hereinafter with reference to accompanying drawing. In various figures, identical element adopts similar accompanying drawing labelling to represent. For the sake of clarity, the various piece in accompanying drawing is not necessarily to scale. Furthermore, it is possible to some known part not shown.
It is to be understood that, when describing certain structure, when one layer, one region is called be positioned at another layer, another region " above " or when " top ", can refer to be located immediately at above another layer, another region, or itself and another layer, also comprise other layer or region between another region. Further, if this structure overturn, this layer, one region will be located in another layer, another region " below " or " lower section ". If being located immediately at another layer, another region above scenario to describe, the form of presentation of " A is directly on B " or " A is on B and adjoins with it " will be adopted herein.
This utility model can present in a variety of manners, some of them example explained below.
Fig. 1 illustrates the schematic diagram of the construction unit of the metamaterial structure according to embodiment of the present utility model. Figure 1 illustrates a construction unit 100, including a conduction geometry 110. The length and width of construction unit 100 is expressed as A and B. Conduction geometry 110 is positioned at construction unit 100, and is distributed relative to the centrosymmetry of construction unit 100, forms centrosymmetry distribution patterns. This centrosymmetry distribution patterns is a kind of pattern in square shape, I-shaped, snowflake shape and matrix pattern. In an example, the pattern of conduction geometry 110 is matrix pattern, including housing the 111, first lines 112 and second lines 113 of square shape. First lines 112 connect the midpoint of relative two sides of housing 111, one-tenth cross intersected with each other respectively with the second lines 113. The length and width of housing 111 is expressed as a and b, parallel with the length and width direction of construction unit 100 respectively, and size is slightly smaller. The live width of housing 111 is W1, and the live width of the first lines 112 is W2, and the live width of the second lines 113 is W3.
In construction unit 100, according to the different demands to light or electromagnetic adjustment effect, can the length A of change structure unit 100, width B, and at least one in the live width W3 of the live width W2 of the length a of housing 111, width b, the live width W1 of housing, the first lines 112 and the second lines 113. If change the length-width ratio a/b of housing 111, or the live width of change the first lines 112 and the second lines 113 is than W2/W3, then can regulate the polarization characteristic of antenna house, to meet the requirement of antenna difference polarised direction. If changing the live width of housing 111 and the first lines 112 and the second lines 113 than W1/W2 or W1/W3, then can regulate the high frequency response characteristic of antenna house, for instance change the steep of cut-off.If the size of change structure unit 100, then can change the size of cut-off frequency. Such as, the size of construction unit 100 is more big, then cut-off frequency is more low.
Conduction geometry 110 can be made up of arbitrary conductive material. Here conductive material, it can be the metal material that the electric conductivity such as gold, silver, copper is good, or the alloy material of one or both being mainly composed of in gold, silver, copper, it is also possible to be the electrically conductive nonmetallic materials such as CNT, Al-Doped ZnO, indium tin oxide. In this utility model, the conduction preferred copper of material of geometry 110 or silver. Conduction geometry 110 can be arbitrary substance form. Here physical form, it is possible to be chosen from the one in solid, liquid, stream-like body and powder, as long as it can maintain specific shape. The conductive material of such as liquid can be contained among cavity, pipeline, capsule and limit its shape.
Although being not shown, but conduction geometry 110 can be formed on medium substrate. The material manufacturing medium substrate has multiple choices, such as pottery, FR4, F4B (politef), HDPE (high density polyethylene (HDPE), HighDensityPolyethylene), ABS (AcrylonitrileButadieneStyrene) etc. Such as, the relative dielectric constant of medium substrate more than 2, loss angle tangent is less than 0.1. Conduction geometry 110 can be attached on medium substrate by modes such as printing, plating, bonding, hot pressing.
In an example, conduction geometry 110 is the patterned metal layer on medium substrate. Conduction geometry 110 by etching, plating, the multiple methods such as quarter, photoetching, electronics quarter or ion quarter of boring be attached on medium substrate. Wherein, etching is preferably manufacturing process, its step is after the plane pattern designing suitable man-made microstructure, first a tinsel is integrally attached on medium substrate, then pass through etching machines, the chemical reaction utilizing solvent and metal gets rid of the foil parts beyond man-made microstructure predetermined pattern, remaining can obtain man-made microstructure. In another example, conduction geometry 110 can be formed on medium substrate by electrically conductive ink printing.
Fig. 2 illustrates the structural representation of the antenna house according to embodiment of the present utility model. Multiple construction units 100, between first medium substrate 200 and second medium substrate 300, form sandwich. In multiple construction units 100, the conduction geometry of adjacent construction unit 100 is spaced apart, that is, the matrix pattern pattern of construction unit 100 is spaced apart without contacting with each other.
This antenna house is not limited to tabular, but can be arranged to any suitable shape according to the requirement of the shape of antenna and application. Such as, when antenna house is applied to aircraft, antenna house be shaped as curved surface. Correspondingly, first medium substrate 200 and second medium substrate 300 should also be as having curved. The plurality of construction unit 100 is conformally formed on the surface of first medium substrate 200.
In each embodiment of the present utility model, the conduction geometry in different structure unit 100 is matrix pattern, and multiple construction units 100 become array by row-column arrangement, and the centrosymmetry pattern of each construction unit 100 is identical. Requirement according to antenna type and application, in the zones of different of antenna house, the arrangement mode of multiple construction units, the conduction shape of geometry, size can be identical or different. Such as, in order to adapt to the polarised direction of antenna, in the zones of different of antenna house, the length-width ratio a/b of the housing of conduction geometry is different, and/or the live width of the first lines and the second lines is more different than W2/W3.In order to improve the wave transparent characteristic of antenna house, for instance obtain wideband wave transparent, in the zones of different of antenna house, the size of the housing of conduction geometry can be different.
Therefore, in alternate embodiments, multiple construction units 100 become array by row-column arrangement, and the centrosymmetry pattern of multiple construction units 100 of adjacent lines can be different from each other. In another alternative embodiment, multiple construction units 100 can be arranged in multiple concentric ring, and the centrosymmetry pattern of each construction unit 100 is identical. In another alternative embodiment, in the plurality of concentric ring, the centrosymmetry pattern of multiple construction units 100 of adjacent ring can be different from each other. It is different that described different centrosymmetry pattern includes at least one in pattern form, pattern dimension and live width.
The method forming this sandwich includes being formed multiple construction unit 100 on a surface of first medium substrate 200, then second medium substrate 300 is adhesively fixed on first medium substrate 200, to cover the multiple construction units 100 on first medium substrate 200 and surface thereof.
Fig. 3 illustrates the S parameter emulation schematic diagram of the antenna house according to embodiment of the present utility model. In S parameter emulates, it is assumed that first medium substrate 200 and second medium substrate 300 are made up of the material of relative dielectric constant 3.15, loss angle tangent 0.008. First medium substrate 200 and second medium substrate 300 are tabular, thickness respectively 1.1 millimeters. At the regional of antenna house, construction unit equivalently-sized, and conduct electricity geometry and be made up of the identical square housing of live width, the first lines and the second lines. Specifically, the length A of construction unit and width B are 6 millimeters, and the length a and width b of the housing of conduction geometry are 5.4 millimeters, and the live width W1 of housing, the live width W2 of the first lines and the live width W3 of the second lines are 0.3 millimeter. The material of conduction geometry is Ag, and thickness is 0.018 millimeter.
For the antenna house of above-mentioned parameter carry out emulating it is shown that antenna house in the frequency range of 0-1.5GHz, S21 wave transmission rate is close to 0dB, transmitance is high, such that it is able to meet the application requirement of antenna house as transparent structure. In the frequency range of 6.5GHz-12GHz, S21 wave transmission rate is less than-10dB, and correspondingly reflectance is high, such that it is able to effect radar invisible structure meets the application requirement of stealth structure material. In antenna house application aspect, wavelength selectivity characteristic shown in Fig. 3 is advantageous for, in the working frequency range of 0-1.5GHz, electromagnetic transmitance is high, can be outside through the antenna within antenna house arrival from antenna house, outside working frequency range, electromagnetic reflection or decay are obvious, thus being difficult to from antenna house outside through the antenna within antenna house arrival. This antenna house is possible not only to play the effect of wave transparent, and can play the effect of wave filter, thus improving the signal to noise ratio of Antenna Operation.
As it has been described above, the material according to medium substrate is different, and the difference of the size of conduction geometry, light or electromagnetic wave are played adjustment effect by conduction geometry. At different working frequency range, above-mentioned comprise conduction geometry sandwich can electromagnetic wave absorption, thus using as transparent structure, or make electromagnetic wave propagation direction occur deviation even reflect, such that it is able to use as stealth structure.
This utility model, by designing different conduction geometries on substrate, changes the dielectric constant of each spatial point by the electromagnetic response feature of relevant metallization layer, makes substrate that the electromagnetic response feature of working frequency range is close with air. Thus decreasing microwave system do not mate caused decay owing to introducing characteristic impedance after traditional sucrose, thus reducing reflection, raising efficiency of transmission.
This metamaterial structure can also adopt multilager base plate, such as includes 3 laminar substrates, is equipped with the conduction geometry of above-mentioned arrangement between adjacent substrate.It is equally reached high wave transmission effect. This performance is usable in the electromagnetic logical application scenario having particular/special requirement with resistance.
Therefore, this utility model also provides for a kind of antenna house, and this antenna house electromagnetic wave transparent material by mentioned earlier is made; for covering at antenna, while antenna is played a protective role, additionally it is possible to ensure that antenna is at working frequency range normal operation; mask uncorrelated frequency range, exclusive PCR.
It should be noted that, the shape of antenna house can be the tabular identical with the electromagnetic wave transparent material shape in accompanying drawing, the shape of designing antenna cover can also be carried out according to the actual requirements, such as it is designed to spherical shape or the shape (conformal antenna house) etc. mated with antenna pattern, also being not excluded for the shape using multiple plate-like structure to be spliced into needs, this is not limited as by this utility model.
This utility model also provides for a kind of antenna system, including antenna, and antenna house as described above, antenna house covers on antenna. Antenna includes radiation source, feed element etc., and concrete composition see correlation technique data, and this is not limited as by this utility model. Antenna body can be such as but not limited to plate aerial, microwave antenna, radar antenna etc.
Conduction geometry of the present utility model and comprise the conduction antenna house of geometry and antenna system and antenna system wave transmission efficiency in working frequency range is significantly high, and other frequency ranges can be shielded, thus exclusive PCR, it is ensured that the works fine environment of antenna. Antenna is plus after antenna house, and the radianting capacity of antenna obtains reinforcement, is effectively increased gain. When practical application, by regulating the conduction shape of geometry, size, thus it is possible to vary the relative dielectric constant of material, refractive index and impedance, thus passband moves to high frequency or low frequency, or change bandwidth.
In the above description, known structural element and step are not described in detail. It should be appreciated to those skilled in the art that by various technological means, corresponding structural element and step can be realized. It addition, in order to form identical structural element, those skilled in the art can be devised by method not identical with process as described above. Although it addition, respectively describing each embodiment above, but it is not intended that the measure in each embodiment can not be advantageously combined use.
Above embodiment of the present utility model is described. But, the purpose that these embodiments are merely to illustrate that, and be not intended to limit scope of the present utility model. Scope of the present utility model is limited by claims and equivalent thereof. Without departing from scope of the present utility model, those skilled in the art can make multiple replacement and amendment, and these substitute and amendment all should drop within scope of the present utility model.
Claims (16)
1. a metamaterial structure, it is characterised in that including:
First medium substrate; And
It is positioned at the multiple conduction geometries on first medium substrate,
Wherein, symmetrical distribution pattern centered by each conduction geometry, and adjacent conduction geometry is spaced apart.
2. metamaterial structure according to claim 1, it is characterised in that described centrosymmetry distribution patterns is at least one pattern in square shape, I-shaped, snowflake shape and matrix pattern.
3. metamaterial structure according to claim 2, it is characterised in that described conduction geometry is matrix pattern pattern, including:
The square shape housing being made up of four sides, housing has the first length, the first width and the first live width;
Connecting the first lines of one group relative two side, the first lines have the second live width; And
Connecting the second lines of two relative sides of another group, the second lines have the 3rd live width;
Wherein, the shape and size of described conduction geometry are set to obtain desired electromagnetic response characteristic.
4. metamaterial structure according to claim 3, it is characterised in that one group of midpoint relative to two sides described in described first line and curve connection.
5. metamaterial structure according to claim 3, it is characterised in that the midpoint of two sides that another group described in described second line and curve connection is relative.
6. metamaterial structure according to claim 3, it is characterised in that the first length is unequal with the first width, to mate the polarised direction of antenna.
7. metamaterial structure according to claim 3, it is characterised in that the second live width is unequal with the 3rd live width, to mate the polarised direction of antenna.
8. metamaterial structure according to claim 3, it is characterised in that the first live width and the second live width, the 3rd live width are unequal, to regulate the steep of the cut-off waveform of electromagnetic response curve.
9. metamaterial structure according to claim 1, it is characterised in that the physical form of conduction geometry is chosen from the one in solid, liquid, stream-like body and powder.
10. metamaterial structure according to claim 9, it is characterised in that conduction geometry is made up of the conductive material of liquid, and is contained in one of cavity, pipeline and capsule to limit its shape.
11. metamaterial structure according to claim 9, it is characterised in that the relative dielectric constant of first medium substrate more than 2, loss angle tangent is less than 0.1.
12. an antenna house, it is characterised in that including:
Metamaterial structure according to any one of claim 1-11; And
It is positioned at the second medium substrate on first medium substrate,
Wherein, the plurality of conduction geometry is clipped between first medium substrate and second medium substrate.
13. antenna house according to claim 12, it is characterised in that first medium substrate and second medium substrate are tabular.
14. antenna house according to claim 12, it is characterised in that first medium substrate and second medium substrate are curved, and the plurality of construction unit is conformally formed on the first surface of first medium substrate.
15. antenna house according to claim 12, it is characterised in that according to wave transparent performance and filtering performance at least one arrange in the zones of different of described antenna house the shape and size of construction unit at least one.
16. an antenna system, it is characterised in that including antenna and the antenna house according to any one of claim 12 to 15, described antenna house covers on antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521140791.4U CN205303676U (en) | 2015-12-31 | 2015-12-31 | Super material structure , antenna house and antenna system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201521140791.4U CN205303676U (en) | 2015-12-31 | 2015-12-31 | Super material structure , antenna house and antenna system |
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| CN205303676U true CN205303676U (en) | 2016-06-08 |
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| CN201521140791.4U Active CN205303676U (en) | 2015-12-31 | 2015-12-31 | Super material structure , antenna house and antenna system |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017114131A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳光启高等理工研究院 | Metamaterial structure, radome and antenna system |
| CN107634346A (en) * | 2017-08-07 | 2018-01-26 | 西安电子科技大学 | The super surface interlayers of ENZ for the transmission of TE and TM polarized waves multi-angle |
| CN111509394A (en) * | 2020-03-23 | 2020-08-07 | 西安电子科技大学 | Liquid metal-based frequency selection device with reconfigurable heat dissipation frequency |
| WO2021000733A1 (en) * | 2019-06-30 | 2021-01-07 | Oppo广东移动通信有限公司 | Housing assembly, antenna assembly, and electronic device |
| CN112234363A (en) * | 2019-06-30 | 2021-01-15 | Oppo广东移动通信有限公司 | Shell assembly, antenna assembly and electronic equipment |
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2015
- 2015-12-31 CN CN201521140791.4U patent/CN205303676U/en active Active
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2017114131A1 (en) * | 2015-12-31 | 2017-07-06 | 深圳光启高等理工研究院 | Metamaterial structure, radome and antenna system |
| CN107634346A (en) * | 2017-08-07 | 2018-01-26 | 西安电子科技大学 | The super surface interlayers of ENZ for the transmission of TE and TM polarized waves multi-angle |
| CN107634346B (en) * | 2017-08-07 | 2020-07-28 | 西安电子科技大学 | ENZ super-surface interlayer for multi-angle transmission of TE and TM polarized waves |
| WO2021000733A1 (en) * | 2019-06-30 | 2021-01-07 | Oppo广东移动通信有限公司 | Housing assembly, antenna assembly, and electronic device |
| CN112234362A (en) * | 2019-06-30 | 2021-01-15 | Oppo广东移动通信有限公司 | Shell assembly, antenna assembly and electronic equipment |
| CN112234363A (en) * | 2019-06-30 | 2021-01-15 | Oppo广东移动通信有限公司 | Shell assembly, antenna assembly and electronic equipment |
| CN112234362B (en) * | 2019-06-30 | 2022-03-01 | Oppo广东移动通信有限公司 | Shell assembly, antenna assembly and electronic equipment |
| JP2022537212A (en) * | 2019-06-30 | 2022-08-24 | オッポ広東移動通信有限公司 | Housing assemblies, antenna assemblies and electronic devices |
| JP7307207B2 (en) | 2019-06-30 | 2023-07-11 | オッポ広東移動通信有限公司 | Housing assemblies, antenna assemblies and electronic devices |
| CN111509394A (en) * | 2020-03-23 | 2020-08-07 | 西安电子科技大学 | Liquid metal-based frequency selection device with reconfigurable heat dissipation frequency |
| CN111509394B (en) * | 2020-03-23 | 2021-01-19 | 西安电子科技大学 | Liquid metal-based frequency selection device with reconfigurable heat dissipation frequency |
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