CN108767488B - Frequency selective surface, frequency selective surface structure and antenna housing - Google Patents
Frequency selective surface, frequency selective surface structure and antenna housing Download PDFInfo
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- CN108767488B CN108767488B CN201810815115.4A CN201810815115A CN108767488B CN 108767488 B CN108767488 B CN 108767488B CN 201810815115 A CN201810815115 A CN 201810815115A CN 108767488 B CN108767488 B CN 108767488B
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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
- H01Q15/0013—Devices acting selectively as reflecting surface, as diffracting or as refracting device, e.g. frequency filtering or angular spatial filtering devices said selective devices working as frequency-selective reflecting surfaces, e.g. FSS, dichroic plates, surfaces being partly transmissive and reflective
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
- H01Q1/422—Housings not intimately mechanically associated with radiating elements, e.g. radome comprising two or more layers of dielectric material
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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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Abstract
本发明提供了一种频率选择表面、频率选择表面结构及天线罩，频率选择表面由周期排列的缝隙型单元组成，任意缝隙型单元由正多边形环与位于正多边形环内部的正多边形贴片复合而成，且两者共中心且具有相同的边数，正多边形环的任意环边内侧均设置有相同的网纹结构，任意网纹结构包括多个“V”字图案并间隔设置在环边内侧，其开口方向还不朝向环边设置；“V”字图案与其相邻的“V”字图案的臂均不相交；靠近两条环边的交点设置的两条环边内侧的“V”字图案的其中一条臂相交于一点，且两条环边内侧的“V”字图案的相交的臂与两条环边围成的结构为实心金属结构。本发明的方案能够在X、Ku、K、Ka、U波段的宽频带范围内实现连续透波特性。
The invention provides a frequency selection surface, a frequency selection surface structure and a radome. The frequency selection surface is composed of periodically arranged slot-type units, and any slot-type unit is composed of a regular polygon ring and a regular polygon patch located inside the regular polygon ring. and the two are concentric and have the same number of sides, the inner side of any ring side of the regular polygon ring is provided with the same reticulated structure, and the arbitrary reticulated structure includes a plurality of "V" patterns and is arranged on the ring side at intervals The inner side, its opening direction is not set toward the ring edge; the arms of the "V" pattern and its adjacent "V" pattern do not intersect; the "V" inside the two ring edges set near the intersection of the two ring edges One of the arms of the character pattern intersects at a point, and the structure enclosed by the intersecting arms of the "V"-shaped pattern inside the two ring sides and the two ring sides is a solid metal structure. The scheme of the present invention can realize continuous wave transmission characteristics in the wide frequency range of X, Ku, K, Ka, and U bands.
Description
Technical Field
The invention provides a frequency selective surface, a frequency selective surface structure and an antenna housing, and belongs to the technical field of electromagnetic fields and microwaves.
Background
The metamaterial is an artificial composite structure or composite material with extraordinary physical properties which are not possessed by materials in the nature. The common realization mode of the metamaterial with the wave-transmitting characteristic is that a designed metal microstructure is embedded in resin or ceramic material according to a given arrangement, namely a frequency selection surface, so that the metamaterial has the functions of modulating electromagnetic waves and changing the propagation mode of the electromagnetic waves to achieve the purpose of wave-transmitting. Frequency selective surface unit structures can be divided into two types: patch type cell structures and slot type cell structures, the two types are complementary in pattern, and the frequency response characteristics of the two are opposite. The patch type unit structure is formed by arranging and sticking some unconnected metal patterns on a dielectric plate according to a certain period, and the gap type unit structure is formed by arranging some gap patterns on a complete metal layer according to a certain period.
At present, relevant research is carried out on X, Ku waveband broadband wave transmission by using a frequency selective surface structure, but because the ultra-wide band from an X waveband to a U waveband is as long as 52GHz, no frequency selective surface structure capable of realizing ultra-wide band continuous wave transmission from the X waveband to the U waveband is available at present. Therefore, the frequency selective surface structure that realizes the wave-transparent characteristic in such a wide frequency band is a difficult point of research in the metamaterial wave-transparent technology, and is a problem to be solved in the field.
Disclosure of Invention
The following presents a simplified summary of the invention in order to provide a basic understanding of some aspects of the invention. It should be understood that this summary is not an exhaustive overview of the invention. It is not intended to determine the key or critical elements of the present invention, nor is it intended to limit the scope of the present invention. Its sole purpose is to present some concepts in a simplified form as a prelude to the more detailed description that is discussed later.
The invention aims to provide a frequency selective surface, a frequency selective surface structure and an antenna housing, which can realize continuous wave-transmitting characteristics in a wide frequency band range of X, Ku, K, Ka and U wave bands (namely from the X wave band to the U wave band).
The technical solution of the invention is as follows:
according to one aspect of the invention, a frequency selective surface is provided, which is composed of periodically arranged slit type units, wherein any slit type unit is formed by compounding a regular polygon ring and a regular polygon patch positioned inside the regular polygon ring, the regular polygon ring and the regular polygon patch share the same center and have the same number of sides, the inner side of any ring side of the regular polygon ring is provided with the same reticulate pattern structure, the random reticulate pattern structure comprises a plurality of V-shaped patterns, the V-shaped patterns are arranged at the inner side of the ring side at intervals and form included angles with the ring side, the opening direction of the V-shaped patterns is not arranged towards the ring side, and for any V-shaped pattern on the inner side of the same ring side, the V-shaped patterns are not intersected with the arms of the adjacent V-shaped patterns; for any two adjacent ring edges, one arm of the V-shaped patterns on the inner sides of the two ring edges, which is arranged close to the intersection point of the two ring edges, is intersected at one point, and the structure formed by the intersected arm of the V-shaped patterns on the inner sides of the two ring edges and the two ring edges is a solid metal structure.
Furthermore, the V-shaped patterns on the inner side of the annular edge are perpendicular to the annular edge.
Further, the regular polygonal ring is a regular hexagonal ring and the regular polygonal patches are regular hexagonal patches.
Furthermore, the slot type units are arranged periodically by adopting honeycomb type grids, and the period sizes are equal.
Furthermore, the regular polygon ring, the regular polygon patch and the plurality of V-shaped patterns are all made of metal materials.
Further, the length of each ring edge of the regular polygonal ring is c, and the width of each ring edge of the regular polygonal ring is d, wherein c satisfies that c is 1.9-2.3 mm, and d satisfies that
The side length of the regular polygon patch is e, and e satisfies
Furthermore, the length of the edge of the annular edge between any adjacent V-shaped patterns on the inner side of the same annular edge is a, and a meets the requirement of
The acute angle formed by any one arm of any V-shaped pattern on the inner side of the annular edge and the annular edge is theta, and theta is more than or equal to 45 degrees and less than or equal to 75 degrees.
Furthermore, the width of any arm of any V-shaped pattern is f, the length is b, and f satisfies
b satisfies
According to another aspect of the present invention there is provided a frequency selective surface structure comprising one or two dielectric layers and a frequency selective surface as defined above disposed on one or both sides of said one dielectric layer or between said two dielectric layers.
According to still another aspect of the present invention, there is provided a radome having the above-described frequency selective surface structure.
Through the technical scheme, for any frequency selection surface unit of the invention: the method is characterized in that a reticulate pattern structure is designed on the inner side of each ring edge of the regular polygon ring structure, so that a regular polygon ring structure with a reticulate pattern boundary is formed, the low-frequency wave-transmitting characteristic is realized through the design of the reticulate pattern structure and the specific position relation of the reticulate pattern structure and the regular polygon ring edge, in addition, a regular polygon patch structure is designed inside the regular polygon ring structure on the designed reticulate pattern boundary, the high-frequency wave-transmitting characteristic is realized through the special design, and the wave-transmitting characteristic is expanded in the low-frequency and high-frequency directions, namely, the ultra-wide band continuous wave-transmitting characteristic from an X wave band to a U wave band is realized through the frequency selection surface unit designed by the invention, so that the problem that the continuous wave-transmitting in the ultra-wide band range of the existing frequency selection surface structure is solved, and the research difficulty of the ultra.
Drawings
The accompanying drawings, which are included to provide a further understanding of the embodiments of the invention and are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description serve to explain the principles of the invention. It is obvious that the drawings in the following description are only some embodiments of the invention, and that for a person skilled in the art, other drawings can be derived from them without inventive effort.
Fig. 1 is a schematic structural diagram of a slot-type cell of a frequency selective surface provided according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a ring edge of a regular polygonal ring according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of a frequency selective surface according to an embodiment of the present invention;
FIG. 4 is a side view of a frequency selective surface structure provided in accordance with an embodiment of the present invention;
fig. 5 is a simulation result of wave-transparent characteristics of the frequency selective surface radome provided in the embodiment of the invention.
In the above drawings:
1. a first dielectric layer; 2. a frequency selective surface structure; 3. a second dielectric layer; 21. a regular polygon patch; 22. and (4) a reticulate pattern structure.
Detailed Description
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict. The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present application. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless specifically stated otherwise. Meanwhile, it should be understood that the sizes of the respective portions shown in the drawings are not drawn in an actual proportional relationship for the convenience of description. Techniques, methods, and apparatus known to those of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate. In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values. It should be noted that: like reference numbers and letters refer to like items in the following figures, and thus, once an item is defined in one figure, further discussion thereof is not required in subsequent figures.
As shown in fig. 1 to 3, there is provided a frequency selective surface according to an embodiment of the present invention, which is composed of slot-type cells periodically arranged, wherein:
as shown in fig. 1 and 2, for any slot type unit, the unit is formed by compounding a regular polygon ring and a regular polygon patch 21 positioned inside the regular polygon ring, wherein the regular polygon ring and the regular polygon patch 21 have the same number of sides and are also concentrically arranged, the inner side of any ring side of the regular polygon ring is provided with the same reticulate pattern 22, any reticulate pattern 22 comprises a plurality of V-shaped patterns, the V-shaped patterns are arranged at intervals on the inner side of the ring side and form an included angle with the ring side, the opening direction of the V-shaped pattern is not arranged towards the ring side, and for any V-shaped pattern on the inner side of the same ring side, the V-shaped pattern is not intersected with the arm of the adjacent V-shaped pattern; for any two adjacent ring edges, one arm of the V-shaped patterns on the inner sides of the two ring edges, which is arranged close to the intersection point of the two ring edges, is intersected at one point, and the structure formed by the intersected arm of the V-shaped patterns on the inner sides of the two ring edges and the two ring edges is a solid metal structure.
Through the frequency surface structure provided by the embodiment of the invention, for the design of any gap type unit: the reticulate pattern structure 22 is designed on the inner side of each ring edge of the regular polygon ring structure, so that the regular polygon ring structure with the reticulate pattern boundary is formed, the low-frequency wave-transmitting characteristic is realized through the design of the reticulate pattern structure 22 and the specific position relation of the reticulate pattern structure and the regular polygon ring edge, in addition, a regular polygon patch 21 structure is designed inside the regular polygon ring structure with the designed reticulate pattern boundary, the high-frequency wave-transmitting characteristic is realized through the special design, and the wave band expansion of the wave-transmitting characteristic in the low-frequency and high-frequency directions is realized, namely, the ultra-wide band continuous wave-transmitting characteristic from an X wave band to a U wave band is realized through the frequency selection surface unit designed by the invention, so that the problem that the continuous wave-transmitting cannot be realized in the ultra-wide band range of the existing frequency selection surface structure is solved, and the research difficulty of.
In the invention, the arrangement of a plurality of "V" shaped patterns at intervals inside the ring edge and forming an included angle with the ring edge, and the arrangement of the opening direction of the "V" shaped patterns not facing the ring edge specifically means that: for a plurality of V-shaped patterns on the inner side of the same annular edge, the symmetrical axis of the V-shaped patterns and the annular edge form an included angle, and the intersected end of two arms of the V-shaped patterns is arranged on the inner side of the annular edge.
Preferably, in order to facilitate simulation calculation and achieve a better wave-transmitting effect, the opening direction of each "V" pattern inside the same annular edge is oriented in the same direction (the direction is not oriented to the annular edge, i.e., faces away from the annular edge), in other words, the plurality of "V" patterns may be inclined in the same direction, or may be perpendicular to the annular edge.
Preferably, for the V-shaped pattern of the plurality of ring sides of the regular polygon ring, the opening direction thereof is clockwise or counterclockwise sequentially.
More preferably, in order to facilitate simulation calculation and realize better wave-transparent effect, the V-shaped pattern on the inner side of the annular edge is arranged perpendicular to the annular edge.
In the invention, in order to adjust parameters in the slot type unit in a simulation test and realize better ultra-wideband continuous wave-transmitting characteristic, the regular polygon ring is designed into a regular hexagon ring and the regular polygon patch 21 is designed into a regular hexagon patch.
As an embodiment of the present invention, as shown in fig. 1, the slot-type cells are all arranged periodically using honeycomb-type cells and have equal period sizes.
As an embodiment of the invention, as shown in fig. 2, six sides of a regular hexagonal ring are l1, l2, l3, l4, l5 and l6 in sequence, wherein l1 is parallel to l4, l2 is parallel to l5, l3 is parallel to l6, and a regular hexagonal patch is arranged in the regular hexagonal ring; in addition, the inner sides of the ring edges l1, l2, l3, l4, l5 and l6 of the regular hexagonal ring are all provided with the same reticulate pattern 22, taking one ring edge l4 as an example, the reticulate structure 22 on the inner side of the ring edge comprises a plurality of 'V' -shaped patterns, the 'V' -shaped patterns are symmetrical patterns, the plurality of 'V' -shaped patterns are arranged on the inner side of the ring edge at equal intervals and are vertical to the ring edge, the opening direction of the 'V' -shaped patterns is also arranged back to the ring edge, namely, one end of the 'V' -shaped pattern, where two arms intersect, is arranged on the inner side of the ring edge, and in addition, for any 'V' -shaped pattern on the inner side of the ring edge, the 'V' -shaped pattern does not intersect with the arm of the 'V' -shaped pattern adjacent to the 'V' -shaped pattern; for any two adjacent ring edges, such as ring edges l4 and l3, a "V" pattern on the inner side of ring edge l4 and a "V" pattern on the inner side of ring edge l3, which are arranged near the intersection point of ring edges l4 and l3, one arm of the two "V" patterns intersects at one point, and the structure enclosed by the intersected arm of the two "V" patterns and the two ring edges l4 and l3 is a solid metal structure.
In the invention, in order to realize wave permeability, the regular polygon ring, the regular polygon patch and the plurality of V-shaped patterns are all made of metal materials. Preferably, for convenience of operation and cost saving, the regular polygon ring, the regular polygon patch, the plurality of "V" patterns and the solid metal structure are processed on the same metal plate, that is, the regular polygon ring, the regular polygon patch and the plurality of "V" patterns are made of the same material as the solid metal structure, and the thickness of the solid metal structure, the thickness of the regular polygon ring side and the thickness of the "V" pattern are kept the same, and the thickness is the thickness of the metal plate.
In the invention, in order to better realize the ultra-wide band continuous wave-transmitting characteristic from an X wave band to a U wave band, for the unit which is vertically arranged by the V-shaped pattern and the ring edge, the gap type structural unit also has the following specific parameter proportion relation:
each ring edge of the regular polygonal ring has the length of c and the width ofD, wherein c is 1.9-2.3 mm, d is
Taking the length as c as a reference, wherein the side length of the regular polygon patch 21 is e, and e satisfies
The length of the ring edge between any adjacent V-shaped patterns on the inner side of the same ring edge is a, and a satisfies
An acute angle formed by any one arm of any V-shaped pattern on the inner side of the annular edge and the annular edge is theta, and theta is more than or equal to 45 degrees and less than or equal to 75 degrees;
the width of any arm of any V-shaped pattern is f, the length is b, and f satisfies
b satisfies
Furthermore, it will be understood by those skilled in the art that the specific values of the various parameters described above, e.g., a, θ, f, b, etc., may be adjusted within the value range according to simulations to achieve optimal results.
As an embodiment of the invention, through simulation, for any unit, 9V-shaped patterns are arranged on the inner sides of the annular edges of the regular hexagonal rings, the length c of the annular edges is 2.1mm, the width d of the annular edges is 0.06mm, and the side length e of the regular hexagonal patches arranged inside the regular hexagonal rings is 0.1 mm. In the texture 22, the side length of the loop between any adjacent "V" patterns on the inner side of the same loop is 0.16mm, the angle θ is 60 °, the width f of the arm of the "V" pattern is 0.03mm, and the length b is 0.19 mm.
As shown in fig. 4, there is also provided a frequency selective surface structure according to an embodiment of the present invention, where the frequency selective surface structure includes one or two dielectric layers, and the frequency selective surface is disposed on one side or both sides of the one dielectric layer or between the two dielectric layers.
As an embodiment of the present invention, the frequency selective surface structure is a flat plate structure, and includes a first dielectric layer 1, a frequency selective surface 2, and a second dielectric layer 3, which are sequentially disposed, where the frequency selective surface 2 is the frequency selective surface described in the above embodiment, and is disposed between the first dielectric layer 1 and the second dielectric layer 3 by being bonded to each other to form the frequency selective surface structure.
Further, according to an embodiment of the present invention, there is also provided a radome having the above frequency selective surface structure.
The radome may have a single-layer structure or a sandwich structure, such as an a sandwich, a B sandwich or a C sandwich, and specifically, the incident surface of the electromagnetic wave of the radome is formed by the frequency selective surface structure.
As an embodiment of the present invention, the first dielectric layer 1 and the second dielectric layer 3 are both non-metallic dielectric layers, preferably, the non-metallic dielectric layers are polyimide or FR-4, and further, the thickness of the first dielectric layer is set to 0-2.5mm, the thickness of the second dielectric layer 3 is set to 0-2.5mm, and when the dielectric layers are single layers, one of the thicknesses is 0 mm.
As shown in fig. 5, fig. 5 shows a simulation result of the wave-transparent characteristic of the frequency selective surface radome provided in the embodiment of the invention, and it can be seen from a wave-transparent rate curve that the wave-transparent rate of the radome is greater than or equal to 75% in an ultra-wide frequency band of 9.8GHz-56.7 GHz.
Compared with the prior art, the invention has the following advantages:
firstly, the reticulate pattern structure is designed in each side of the regular polygon ring structure by the frequency selection surface structure, so that the regular polygon ring structure with reticulate pattern boundaries is formed, and excellent low-frequency wave transmission is realized through the position design and the specific proportional relation of the reticulate pattern structure and the side length of the regular polygon; the regular polygon patch structure is designed in the regular polygon ring structure of the reticulate pattern boundary, excellent high-frequency wave transmission is realized by designing the patch and a specific proportional relation between the side length of the patch and the side length of the hexagon structure with the reticulate pattern boundary, and because the wave transmission characteristic is expanded in the low-frequency and high-frequency wave bands, the ultra-wide band continuous wave transmission characteristic from an X wave band to a U wave band is realized, the problem that the continuous wave transmission of a frequency selection surface structure in the ultra-wide band range can not be realized is solved, and the research difficulty of the ultra-material ultra-wide band wave transmission technology is broken through;
secondly, the antenna housing provided by the invention has the ultra-wide band wave-transmitting characteristic from the X wave band to the U wave band, so that the X, Ku, K, Ka and U wave band antennas can be used by adopting the antenna housing with the frequency selection surface, and the application range is greatly improved;
thirdly, the frequency selective surface structure provided by the invention can be applied to high-tech fields such as communication, navigation, radar and guidance, so as to meet wave-transparent requirements of different fields and realize application in engineering.
Spatially relative terms, such as "above … …," "above … …," "above … …," "above," and the like, may be used herein for ease of description to describe one device or feature's spatial relationship to another device or feature as illustrated in the figures. It will be understood that the spatially relative terms are intended to encompass different orientations of the device in use or operation in addition to the orientation depicted in the figures. For example, if a device in the figures is turned over, devices described as "above" or "on" other devices or configurations would then be oriented "below" or "under" the other devices or configurations. Thus, the exemplary term "above … …" can include both an orientation of "above … …" and "below … …". The device may be otherwise variously oriented (rotated 90 degrees or at other orientations) and the spatially relative descriptors used herein interpreted accordingly.
It should be noted that the terms "first", "second", and the like are used to define the components, and are only used for convenience of distinguishing the corresponding components, and the terms have no special meanings unless otherwise stated, and therefore, the scope of the present invention should not be construed as being limited.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
The invention has not been described in detail and is in part known to those of skill in the art.
Claims (10)
1. A frequency selective surface comprised of a periodic array of slot-type elements, characterized by: any of the slit-type units is formed by compounding a regular polygon ring and a regular polygon patch positioned inside the regular polygon ring, wherein the regular polygon ring and the regular polygon patch are concentric and have the same number of sides, the inner side of any ring side of the regular polygon ring is provided with the same reticulate pattern, any reticulate pattern comprises a plurality of V-shaped patterns, the V-shaped patterns are arranged at intervals on the inner side of the ring side and form included angles with the ring side, the opening direction of the V-shaped patterns is not arranged towards the ring side, and,
for any V-shaped pattern on the inner side of the same annular edge, the V-shaped pattern is not intersected with the arm of the adjacent V-shaped pattern; for any two adjacent ring edges, one arm of the V-shaped patterns on the inner sides of the two ring edges, which is arranged close to the intersection point of the two ring edges, is intersected at one point, and the structure formed by the intersected arm of the V-shaped patterns on the inner sides of the two ring edges and the two ring edges is a solid metal structure.
2. A frequency selective surface as claimed in claim 1, wherein: the V-shaped patterns on the inner side of the annular edge are perpendicular to the annular edge.
3. A frequency selective surface according to claim 1 or 2, wherein: the regular polygonal ring is a regular hexagonal ring and the regular polygonal patches are regular hexagonal patches.
4. A frequency selective surface according to claim 3, wherein: the gap type units are arranged periodically by adopting honeycomb type grids, and the period sizes are equal.
5. A frequency selective surface as claimed in claim 1, wherein: the regular polygon ring, the regular polygon patch and the plurality of V-shaped patterns are all made of metal materials.
6. A frequency selective surface as claimed in claim 2, wherein: the length of each ring edge of the regular polygonal ring is c, and the width of each ring edge of the regular polygonal ring is d, wherein c satisfies that c is 1.9-2.3 mm, and d satisfies that
The side length of the regular polygon patch is e, and e satisfies
7. A frequency selective surface according to claim 6, wherein: the length of the ring edge between any adjacent V-shaped patterns on the inner side of the same ring edge is a, wherein a satisfies
An acute angle formed by any one arm of any V-shaped pattern on the inner side of the annular edge and the annular edge is theta, and theta is more than or equal to 45 degrees and less than or equal to 75 degrees.
8. A frequency selective surface according to claim 6, wherein: the width of any arm of any V-shaped pattern is f, the length of any arm of the V-shaped pattern is b, and f satisfies
B satisfies
9. A frequency selective surface structure, characterized by: the frequency selective surface comprising one or two dielectric layers and the frequency selective surface according to any one of claims 1-8 disposed on one or both sides of the one dielectric layer or between the two dielectric layers.
10. A frequency selective surface radome, comprising: the radome has the frequency selective surface structure of claim 9.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810815115.4A CN108767488B (en) | 2018-07-24 | 2018-07-24 | Frequency selective surface, frequency selective surface structure and antenna housing |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810815115.4A CN108767488B (en) | 2018-07-24 | 2018-07-24 | Frequency selective surface, frequency selective surface structure and antenna housing |
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| Publication Number | Publication Date |
|---|---|
| CN108767488A CN108767488A (en) | 2018-11-06 |
| CN108767488B true CN108767488B (en) | 2021-03-09 |
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| CN111370863A (en) * | 2020-03-19 | 2020-07-03 | 北京环境特性研究所 | Structure for Ku and Ka dual-band wave transmission |
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| "大型分块介质天线罩电性能提升技术";唐守柱等;《复合材料学报》;20160630(第6期);第1305-1310页 * |
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