CN115425421A - Low RCS array antenna based on lossy electromagnetic super surface - Google Patents
Low RCS array antenna based on lossy electromagnetic super surface Download PDFInfo
- Publication number
- CN115425421A CN115425421A CN202210831977.2A CN202210831977A CN115425421A CN 115425421 A CN115425421 A CN 115425421A CN 202210831977 A CN202210831977 A CN 202210831977A CN 115425421 A CN115425421 A CN 115425421A
- Authority
- CN
- China
- Prior art keywords
- super
- electromagnetic
- array
- lossy
- array antenna
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000005855 radiation Effects 0.000 claims abstract description 48
- 230000010287 polarization Effects 0.000 claims abstract description 14
- 239000002184 metal Substances 0.000 claims description 39
- 239000000758 substrate Substances 0.000 claims description 33
- 230000005684 electric field Effects 0.000 claims description 13
- 239000004020 conductor Substances 0.000 claims description 12
- 238000010586 diagram Methods 0.000 description 8
- 238000000034 method Methods 0.000 description 5
- 230000005540 biological transmission Effects 0.000 description 4
- 238000003780 insertion Methods 0.000 description 4
- 230000037431 insertion Effects 0.000 description 4
- 230000000737 periodic effect Effects 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000005764 inhibitory process Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000011160 research Methods 0.000 description 1
Images
Classifications
-
- 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
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
-
- 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
- H01Q15/24—Polarising devices; Polarisation filters
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q21/00—Antenna arrays or systems
Landscapes
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a low RCS array antenna based on a lossy electromagnetic super surface, and belongs to the technical field of microwave antennas. The low RCS array antenna comprises a radiation array, an anisotropic lossy electromagnetic super surface and a feed structure; the anisotropic electromagnetic wave consumption super surface is in the same direction with the polarization direction of the array antenna, when the plane electromagnetic wave is incident to the radiation array, the incident electromagnetic wave outside the working frequency band is absorbed by the electromagnetic wave consumption super surface, and the electromagnetic wave near the working frequency band is absorbed by the radiation array, so that the in-band low RCS is realized; the anisotropic electromagnetic super surface is in the direction orthogonal to the polarization direction of the array antenna, when the plane electromagnetic wave is incident to the radiation array, the incident electromagnetic wave near the working frequency band is absorbed by the anisotropic electromagnetic super surface, and the broadband low RCS is realized.
Description
Technical Field
The invention belongs to the technical field of microwave antennas, and particularly relates to a low RCS array antenna based on a lossy electromagnetic super surface.
Background
With the continuous development of military electronic technology, the phased array antenna needs to have both low RCS characteristics and high-efficiency radiation characteristics. Generally, an array antenna with low RCS characteristics can be obtained by technical means such as conformal technology and wave-absorbing materials. However, conformal techniques are not suitable for in-band stealth designs, and applying absorbing materials near the wavefront can reduce the radiation efficiency of the array.
The prior art "An Ultra-Wideband polarized Array Co-Designed With Low Scattering Characteristics" discloses An Ultra-Wideband Tightly Coupled Array, which can absorb electromagnetic waves in a broadband under the condition of load matching, however, for An Array With a narrower operating band, the matching in a broadband range can increase the receiving noise. The prior art "Microstrip phase-Array In-Band RCS Reduction With a Random Element Rotation Technique" discloses an Array antenna, which uses a Random Element Rotation mode to reduce the In-Band RCS of the Array, but the low RCS bandwidth is narrow and is more suitable for circularly polarized antennas. The prior art 'RCS Reduction of ridge Waveguide slit Antenna Using EBG radio interfering Material' discloses an Array Antenna, wherein RCS Reduction is realized by Using an electromagnetic band gap structure with lumped resistance elements, the electromagnetic band gap structure with resistors absorbs part of radiation energy, and the normal radiation gain insertion loss of the electromagnetic band gap structure is more than 0.9dB.
How to obtain an array with good radiation performance and broadband low-RCS characteristics without increasing the aperture is undoubtedly a great challenge for antenna designers, and especially an array antenna with a radiation frequency band covered by a low-RCS frequency band has great application and research values.
Disclosure of Invention
The present invention is directed to overcoming the above-mentioned deficiencies of the prior art and providing a low RCS array antenna based on a lossy electromagnetic super-surface.
The technical problem proposed by the invention is solved as follows:
a low RCS array antenna based on a lossy electromagnetic super surface comprises a radiation array, an anisotropic lossy electromagnetic super surface and a feed structure;
the radiation array consists of microstrip rectangular patch radiation units which are arranged in an M multiplied by N tight mode, the period is less than or equal to half wavelength corresponding to the working center frequency, and M and N are positive integers; the microstrip rectangular patch radiating unit is a linear polarization antenna and comprises a rectangular patch 3, a first square dielectric substrate 2 and a metal floor 1; the rectangular patch 3 is positioned in the center of the upper surface of the first square dielectric substrate 2, and the edge of the rectangular patch 3 is parallel to the edge of the first square dielectric substrate 2; the metal floor 1 fully covers the lower surface of the first square dielectric substrate 2;
the feeding structure adopts 50 omega coaxial feeding, is positioned at the bottom of the first square dielectric substrate 2 and comprises an outer conductor, a dielectric layer and an inner conductor; the outer conductor is connected with the metal floor 1, and the inner conductor penetrates through the first square dielectric substrate 2 to be connected with the rectangular patch 3;
the anisotropic lossy electromagnetic super surface is positioned above the radiation array, and a space is reserved between the anisotropic lossy electromagnetic super surface and the radiation array; the anisotropic lossy electromagnetic super surface is composed of super surface units which are closely arranged in a 2 Mx 2N mode, and the period is half of that of the radiation array.
Further, the distance between the anisotropic lossy electromagnetic super-surface and the radiation array is 1/6 wavelength.
Furthermore, the super-surface unit is a 180-degree central rotational symmetry structure and comprises an upper super-surface structure 6, a second square medium substrate 5 and a lower super-surface structure 4; the upper super-surface structure 6 is positioned on the upper surface of the second square dielectric substrate, and the lower super-surface structure 4 is positioned on the lower surface of the second square dielectric substrate.
Further, the upper super-surface structure 6 includes two first transverse branches 601, two second transverse branches 602, two rectangular metal rings 603, two first longitudinal branches 604, two second longitudinal branches 605, two third longitudinal branches 606, and two first resistors 607; the first resistor 607 is placed in the lateral direction; the first transverse branch 601 is parallel to the edge of the second square dielectric substrate 5, and the inner side of the central position is connected with a first resistor 607; the other end of the first resistor 607 is connected to the rectangular metal ring 603 through the first longitudinal branch 604 and the second longitudinal branch 605 in sequence, and the connection point is located at the center of the long side of the rectangular metal ring 603; the center position of the other long side of the rectangular metal ring 603 is connected with the center position of the second transverse branch 602 through the third longitudinal branch 606, and the second transverse branch 602 is parallel to the long side of the rectangular metal ring 603.
Further, the lower super-surface structure 4 includes two fourth longitudinal branches 401, two third transverse branches 402, two fourth transverse branches 403, a square metal ring 404, two fifth longitudinal branches 405, and two second resistors 406; the second resistor 406 is placed in the longitudinal direction; the fourth longitudinal branch 401 is parallel to the edge of the second square dielectric substrate 5, and the inner side of the central position is connected with a second resistor 406; the other end of the second resistor 406 is connected to the square metal ring 404 sequentially through the third transverse branch 402 and the fourth transverse branch 403, and the connection point is located at the center of the side of the square metal ring 404; two fifth longitudinal branches 405 extend inwards from the center positions of the other two sides of the square metal ring 404.
Further, the two third longitudinal branches 606 of the upper super-surface structure 6 are respectively connected with the ends of the two fifth longitudinal branches 405 of the lower super-surface structure 4 through metal through holes.
Furthermore, the anisotropic electromagnetic super surface is in the same direction with the electric field direction of the array antenna, and the equivalent circuit of the super surface unit is a series RLC circuit and a parallel LC circuit in series; the anisotropic power consumption electromagnetic super surface is in the direction orthogonal to the electric field direction of the array antenna, the equivalent circuit of the super surface unit is a series RLC circuit, and the resonance point of the parallel LC circuit is at the central frequency point of the antenna working frequency band.
Furthermore, the anisotropic electromagnetic wave consumption super surface is in the same direction with the polarization direction of the array antenna, when the plane electromagnetic wave is incident to the radiation array, the incident electromagnetic wave outside the working frequency band is absorbed by the electromagnetic wave consumption super surface, the electromagnetic wave near the working frequency band is absorbed by the radiation array, and the in-band low RCS is realized; the anisotropic electromagnetic super surface with power consumption is in the direction orthogonal to the polarization direction of the array antenna, when the plane electromagnetic wave is incident to the radiation array, the incident electromagnetic wave near the working frequency band is absorbed by the electromagnetic super surface with power consumption, and the broadband low RCS is realized.
The invention has the beneficial effects that:
the two-dimensional microstrip rectangular antenna and the lossy electromagnetic super surface in the lossy electromagnetic super surface low RCS array antenna adopt PCB processes, so that the processing is simple and the radiation performance is stable;
the gain of the array antenna is less influenced by the power consumption electromagnetic super surface, and the insertion loss of radiation gain is lower;
the array antenna based on the lossy electromagnetic super-surface low RCS can realize RCS inhibition of different polarization modes within a broadband range;
the super-surface low-RCS array antenna based on the lossy electromagnetism has the characteristic of low RCS in a smaller range of the incident angle of the electromagnetic waves;
the antenna based on the electromagnetic super-surface low-RCS array with the lossy structure absorbs incident electromagnetic waves and converts the incident electromagnetic waves into heat energy, so that the antenna has the characteristic of double-station low-RCS.
Drawings
Fig. 1 is a side view of a low RCS array antenna according to the present invention;
fig. 2 is a schematic structural diagram of a radiating element in the array antenna according to the present invention;
FIG. 3 is a structural diagram of an anisotropic lossy electromagnetic super-surface in an array antenna according to the present invention, in which (a) an upper super-surface structure and (b) a lower super-surface structure;
FIG. 4 is an equivalent circuit of the lossy electromagnetic super-surface unit in the array antenna according to the present invention, in which (a) the anisotropic lossy electromagnetic super-surface is in the same direction of the electric field direction of the array antenna, and (b) the anisotropic lossy electromagnetic super-surface is orthogonal to the electric field direction of the array antenna;
FIG. 5 is a schematic illustration of reflectance comparison of a radiating array not loaded/loaded with a lossy electromagnetic super-surface;
FIGS. 6 (a) and 6 (b) are graphs of the magnitude and phase of the reflection and transmission coefficients, respectively, when a plane wave is incident on an anisotropic lossy electromagnetic superconducting surface;
FIG. 7 (a) is a reflection coefficient curve diagram of an array after TE waves are incident to the loaded electromagnetic super surface at different angles on the H surface, and FIG. 7 (b) is a reflection coefficient curve diagram of an array after TM waves are incident to the loaded electromagnetic super surface at different angles on the E surface;
FIG. 8 is a radiation pattern of an antenna element under periodic boundary conditions after no loading/loading of a lossy electromagnetic super-surface;
fig. 9 (a) is a graph of array reflection coefficients of TE waves after electromagnetic waves at different angles enter the electromagnetic super-surface loaded on the E-plane, and fig. 9 (b) is a graph of array reflection coefficients of TM waves after electromagnetic waves at different angles enter the electromagnetic super-surface loaded on the H-plane.
Detailed Description
The invention is further described below with reference to the figures and examples.
The embodiment provides a low RCS array antenna based on a lossy electromagnetic super surface, which is shown in a side view in FIG. 1 and comprises a radiation array, an anisotropic lossy electromagnetic super surface and a feed structure;
the radiation array consists of microstrip rectangular patch radiation units which are arranged in an M multiplied by N tight mode, the period (the distance between adjacent radiation units) is less than or equal to half wavelength corresponding to the working center frequency, and M and N are positive integers; the microstrip rectangular patch radiating unit is a linearly polarized antenna, and the structural schematic diagram of the radiating unit is shown in fig. 2 and comprises a rectangular patch 3, a first square dielectric substrate 2 and a metal floor 1; the rectangular patch 3 is positioned in the center of the upper surface of the first square dielectric substrate 2, and the rectangular patch 3 is parallel to the edge of the first square dielectric substrate 2; the metal floor 1 covers the lower surface of the first square dielectric substrate 2.
The feeding structure adopts 50 omega coaxial feeding, is positioned at the bottom of the first square dielectric substrate 2 and comprises an outer conductor, a dielectric layer and an inner conductor; the outer conductor is connected with the metal floor 1, and the inner conductor penetrates through the first square dielectric substrate 2 and is connected with the rectangular patch 3.
The anisotropic lossy electromagnetic super surface is positioned above the radiation array, and a space is reserved, wherein the space is 1/6 wavelength; the anisotropic lossy electromagnetic super surface is composed of super surface units which are closely arranged in a 2 Mx 2N mode, and the period is half of that of the radiation array.
The super-surface unit is a 180-degree central rotational symmetry structure and comprises an upper super-surface structure 6, a second square dielectric substrate 5 and a lower super-surface structure 4; the upper super-surface structure 6 is positioned on the upper surface of the second square dielectric substrate, and the lower super-surface structure 4 is positioned on the lower surface of the second square dielectric substrate.
The structural schematic diagram of the upper super-surface structure 6 is shown in fig. 3 (a), and includes two first transverse branches 601, two second transverse branches 602, two rectangular metal rings 603, two first longitudinal branches 604, two second longitudinal branches 605, two third longitudinal branches 606, and two first resistors 607; the first resistor 607 is placed in the lateral direction; the first transverse branch 601 is parallel to the edge of the second square dielectric substrate 5, and the inner side of the central position is connected with a first resistor 607; the other end of the first resistor 607 is connected to the rectangular metal ring 603 through a first longitudinal branch 604 and a second longitudinal branch 605 in sequence, and the connection point is located at the center of the long side of the rectangular metal ring 603; the center position of the other long side of the rectangular metal ring 603 is connected with the center position of the second transverse branch 602 through the third longitudinal branch 606, and the second transverse branch 602 is parallel to the long side of the rectangular metal ring 603.
The structural schematic diagram of the lower super-surface structure 4 is shown in fig. 3 (b), and includes two fourth longitudinal branches 401, two third transverse branches 402, two fourth transverse branches 403, a square metal ring 404, two fifth longitudinal branches 405, and two second resistors 406; the second resistor 406 is placed in the longitudinal direction; the fourth longitudinal branch 401 is parallel to the edge of the second square dielectric substrate 5, and the inner side of the central position is connected with a second resistor 406; the other end of the second resistor 406 is connected to the square metal ring 404 through the third transverse branch 402 and the fourth transverse branch 403 in sequence, and the connection point is located at the center of the side of the square metal ring 404; two fifth longitudinal branches 405 extend inwards from the center positions of the other two sides of the square metal ring 404.
The two third longitudinal branches 606 of the upper super-surface structure 6 are respectively connected with the ends of the two fifth longitudinal branches 405 of the lower super-surface structure 4 through metal through holes.
The anisotropic electromagnetic super surface is in the same direction with the electric field direction of the array antenna, and the equivalent circuit of the super surface unit is a series RLC circuit and a parallel LC circuit, as shown in FIG. 4 (a); the anisotropic power-consuming electromagnetic super-surface is in the direction orthogonal to the electric field direction of the array antenna, the equivalent circuit of the super-surface unit is a series RLC circuit, as shown in FIG. 4 (b), and the resonance point of the parallel LC circuit is at the central frequency point of the antenna operating frequency band. By utilizing the periodic boundary condition, after electromagnetic waves in different electric field directions are considered to be incident to the super-surface, the reflection and transmission coefficients of the electromagnetic waves can calculate the equivalent surface impedance of the super-surface.
After the planar electromagnetic wave is incident to the array surface with the super surface, the reflection coefficient of the planar electromagnetic wave can be calculated by the following formula:
wherein Z is A Is an equivalent circuit of the array antenna and the super surface, Z 0 R is the reflection coefficient for vacuum wave impedance. The reflection coefficient of the array antenna with the power-consuming electromagnetic super surface can be calculated according to the formula.
The anisotropic electromagnetic wave consumption super surface is in the same direction with the polarization direction of the array antenna, when the plane electromagnetic wave is incident to the radiation array, the incident electromagnetic wave outside the working frequency band is absorbed by the electromagnetic wave consumption super surface, and the electromagnetic wave near the working frequency band is absorbed by the radiation array, so that the in-band low RCS is realized; the anisotropic electromagnetic super surface with power consumption is in the direction orthogonal to the polarization direction of the array antenna, when the plane electromagnetic wave is incident to the radiation array, the incident electromagnetic wave near the working frequency band is absorbed by the electromagnetic super surface with power consumption, and the broadband low RCS is realized.
The super-surface is axially symmetrical along the array polarization direction and the orthogonal direction, so that the electrical properties of the power-consuming electromagnetic super-surface in different directions are ensured to be less interfered with each other, and the reflection coefficients of the power-consuming electromagnetic super-surface in different electric field directions are conveniently and independently analyzed and designed by adopting an equivalent circuit method.
Spacing d between array surface and super surface 0 About 1/6 wavelength, the anisotropic lossy electromagnetic super-surface model cannot be analyzed accurately by an equivalent circuit method due to the interval smaller than 1/6 wavelength, and the interval larger than 1/6 wavelength can increase the whole section.
The reflection coefficient comparison diagram of the radiation array without loading/loading the dissipative electromagnetic super surface is shown in fig. 5, and it can be seen that the anisotropic dissipative electromagnetic super surface has less influence on the antenna reflection coefficient. The array antenna is fed through the feed structure, and the array standing wave is less than 2 in the working frequency band range. The feed port may be either a matched or shorted state out-of-band, or some other fixed intermediate state, the matching state being taken in this example.
Fig. 6 (a) and 6 (b) are graphs of the magnitude and phase of the reflection and transmission coefficients, respectively, when a plane wave is incident on an anisotropic lossy electromagnetic superconducting surface. It can be seen that the transmission coefficient S21 is larger near the antenna operating frequency band, the antenna radiation insertion loss is smaller, and the influence of the anisotropic lossy electromagnetic super-surface on the antenna radiation performance is small.
Fig. 7 (a) is a reflection coefficient graph of the array after TE waves are incident on the H plane at different angles, and fig. 7 (b) is a reflection coefficient graph of the array after TM waves are incident on the E plane at different angles. It can be seen that electromagnetic waves of different polarizations and directions incident on the array loaded with the lossy surfaces are efficiently absorbed. The incident electric field direction is parallel to the antenna radiation electric field direction.
Fig. 8 is a radiation pattern of the antenna unit without/with the electromagnetic dissipative super-surface under the periodic boundary condition, and the normal gain insertion loss is 0.5dB, so that it can be seen that the influence on the radiation performance of the antenna unit with the electromagnetic dissipative super-surface is small.
Fig. 9 (a) is a graph of array reflection coefficients of TE waves after electromagnetic waves at different angles enter the electromagnetic super-surface loaded on the E-plane, and fig. 9 (b) is a graph of array reflection coefficients of TM waves after electromagnetic waves at different angles enter the electromagnetic super-surface loaded on the H-plane. It can be seen that electromagnetic waves of different polarizations and directions incident on the array loaded with the electromagnetic dissipative super-surface are efficiently absorbed. The incident electromagnetic direction is orthogonal to the antenna radiation electric field direction.
While the invention has been described with reference to specific preferred embodiments, it will be understood by those skilled in the art that various changes and modifications may be made without departing from the spirit and scope of the invention. Therefore, the protection scope of the present invention should be subject to the protection scope of the claims.
Claims (8)
1. A low RCS array antenna based on a lossy electromagnetic super surface is characterized by comprising a radiation array, an anisotropic lossy electromagnetic super surface and a feed structure;
the radiation array consists of microstrip rectangular patch radiation units which are arranged in an M multiplied by N tight mode, the period is less than or equal to half wavelength corresponding to the working center frequency, and M and N are positive integers; the microstrip rectangular patch radiating unit is a linear polarization antenna and comprises a rectangular patch (3), a first square dielectric substrate (2) and a metal floor (1); the rectangular patch (3) is positioned at the center of the upper surface of the first square dielectric substrate (2), and the side of the rectangular patch (3) is parallel to the side of the first square dielectric substrate (2); the metal floor (1) fully covers the lower surface of the first square medium substrate (2);
the feeding structure adopts 50 omega coaxial feeding, is positioned at the bottom of the first square dielectric substrate (2), and comprises an outer conductor, a dielectric layer and an inner conductor; the outer conductor is connected with the metal floor (1), and the inner conductor penetrates through the first square dielectric substrate (2) to be connected with the rectangular patch (3);
the anisotropic lossy electromagnetic super surface is positioned above the radiation array, and a space is reserved between the anisotropic lossy electromagnetic super surface and the radiation array; the anisotropic lossy electromagnetic super surface is composed of super surface units which are closely arranged in a 2 Mx 2N mode, and the period is half of that of the radiation array.
2. The low RCS array antenna based on an electromagnetic lossy super surface of claim 1, wherein the distance between the anisotropic electromagnetic lossy super surface and the radiating array is 1/6 wavelength.
3. The low RCS array antenna based on the lossy electromagnetic super-surface is characterized in that the super-surface unit is a 180-degree central rotation symmetrical structure and comprises an upper super-surface structure (6), a second square dielectric substrate (5) and a lower super-surface structure (4); the upper super-surface structure (6) is located on the upper surface of the second square dielectric substrate, and the lower super-surface structure (4) is located on the lower surface of the second square dielectric substrate.
4. The low RCS array antenna based on lossy electromagnetic super-surfaces according to claim 3, characterized in that the upper super-surface structure (6) comprises two first transverse branches (601), two second transverse branches (602), two rectangular metal rings (603), two first longitudinal branches (604), two second longitudinal branches (605), two third longitudinal branches (606) and two first resistors (607); a first resistor (607) is placed in the lateral direction; the first transverse branch (601) is parallel to the edge of the second square dielectric substrate (5), and the inner side of the central position is connected with a first resistor (607); the other end of the first resistor (607) is connected to the rectangular metal ring (603) through a first longitudinal branch (604) and a second longitudinal branch (605) in sequence, and the connection point is located at the center of the long side of the rectangular metal ring (603); the center position of the other long side of the rectangular metal ring (603) is connected with the center position of the second transverse branch (602) through the third longitudinal branch (606), and the second transverse branch (602) is parallel to the long side of the rectangular metal ring (603).
5. The low RCS array antenna based on lossy electromagnetic super-surfaces according to claim 4, characterized in that the lower super-surface structure (4) comprises two fourth longitudinal branches (401), two third transverse branches (402), two fourth transverse branches (403), a square metal ring (404), two fifth longitudinal branches (405) and two second resistors (406); a second resistor (406) is placed along the longitudinal direction; the fourth longitudinal branch (401) is parallel to the edge of the second square dielectric substrate (5), and the inner side of the central position is connected with a second resistor (406); the other end of the second resistor (406) is connected to the square metal ring (404) through the third transverse branch (402) and the fourth transverse branch (403) in sequence, and the connection point is located at the center of the side of the square metal ring (404); two fifth longitudinal branches (405) respectively extend inwards from the center positions of the other two sides of the square metal ring (404).
6. The low RCS array antenna based on lossy electromagnetic super-surfaces according to claim 5, characterized in that, the two third longitudinal branches (606) of the upper super-surface structure (6) are respectively connected with the ends of the two fifth longitudinal branches (405) of the lower super-surface structure (4) through metal through holes.
7. The low RCS array antenna based on the lossy electromagnetic super-surface, according to the claim 6, characterized in that the anisotropic lossy electromagnetic super-surface is in the same direction with the electric field direction of the array antenna, and the equivalent circuit of the super-surface unit is a series RLC circuit and a series LC circuit; the anisotropic power-consuming electromagnetic super-surface is in the direction orthogonal to the electric field direction of the array antenna, the equivalent circuit of the super-surface unit is a series RLC circuit, and the resonance point of a parallel LC circuit is at the central frequency point of the antenna working frequency band.
8. The array antenna with low RCS based on the dissipative electromagnetic super-surface as claimed in claim 7, wherein the anisotropic dissipative electromagnetic super-surface is in the same direction as the polarization direction of the array antenna, when the planar electromagnetic waves are incident to the radiation array, the dissipative electromagnetic super-surface absorbs the incident electromagnetic waves outside the working frequency band, and the electromagnetic waves near the working frequency band are absorbed by the radiation array, so as to realize in-band low RCS; the anisotropic electromagnetic super surface is in the direction orthogonal to the polarization direction of the array antenna, when the plane electromagnetic wave is incident to the radiation array, the incident electromagnetic wave near the working frequency band is absorbed by the anisotropic electromagnetic super surface, and the broadband low RCS is realized.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831977.2A CN115425421B (en) | 2022-07-14 | 2022-07-14 | Low RCS array antenna based on consumable electromagnetic super surface |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210831977.2A CN115425421B (en) | 2022-07-14 | 2022-07-14 | Low RCS array antenna based on consumable electromagnetic super surface |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN115425421A true CN115425421A (en) | 2022-12-02 |
| CN115425421B CN115425421B (en) | 2024-06-14 |
Family
ID=84196592
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210831977.2A Active CN115425421B (en) | 2022-07-14 | 2022-07-14 | Low RCS array antenna based on consumable electromagnetic super surface |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115425421B (en) |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100001894A1 (en) * | 2008-07-03 | 2010-01-07 | Sandor Holly | Millimeter wave filters |
| RU2400882C1 (en) * | 2009-09-23 | 2010-09-27 | Фгу "2 Цнии Минобороны России" | Radar antenna with decreased effective scattering area |
| CN102110891A (en) * | 2009-12-23 | 2011-06-29 | 西北工业大学 | S-band micro-strip antenna with substrate made of completely-absorbing meta-material |
| CN102117971A (en) * | 2011-01-06 | 2011-07-06 | 西安电子科技大学 | Low-scattering plane-reflective array antenna |
| JP2011217269A (en) * | 2010-04-01 | 2011-10-27 | Mitsubishi Electric Corp | Antenna apparatus |
| CN109599657A (en) * | 2018-11-29 | 2019-04-09 | 安徽大学 | It is a kind of based on antenna array and function divide feeding network integrated design towards 5G base-station antenna array and its design method |
| CN113206392A (en) * | 2021-05-14 | 2021-08-03 | 德州学院 | Microstrip array antenna with reduced scattering cross section of in-band radar |
| CN114156627A (en) * | 2021-10-29 | 2022-03-08 | 电子科技大学 | Ultra-wideband low-profile low-scattering curved phased array antenna |
-
2022
- 2022-07-14 CN CN202210831977.2A patent/CN115425421B/en active Active
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100001894A1 (en) * | 2008-07-03 | 2010-01-07 | Sandor Holly | Millimeter wave filters |
| RU2400882C1 (en) * | 2009-09-23 | 2010-09-27 | Фгу "2 Цнии Минобороны России" | Radar antenna with decreased effective scattering area |
| CN102110891A (en) * | 2009-12-23 | 2011-06-29 | 西北工业大学 | S-band micro-strip antenna with substrate made of completely-absorbing meta-material |
| JP2011217269A (en) * | 2010-04-01 | 2011-10-27 | Mitsubishi Electric Corp | Antenna apparatus |
| CN102117971A (en) * | 2011-01-06 | 2011-07-06 | 西安电子科技大学 | Low-scattering plane-reflective array antenna |
| CN109599657A (en) * | 2018-11-29 | 2019-04-09 | 安徽大学 | It is a kind of based on antenna array and function divide feeding network integrated design towards 5G base-station antenna array and its design method |
| CN113206392A (en) * | 2021-05-14 | 2021-08-03 | 德州学院 | Microstrip array antenna with reduced scattering cross section of in-band radar |
| CN114156627A (en) * | 2021-10-29 | 2022-03-08 | 电子科技大学 | Ultra-wideband low-profile low-scattering curved phased array antenna |
Non-Patent Citations (5)
| Title |
|---|
| QIANG CHEN等: "RCS Reduction of Patch Array Antenna Using Anisotropic Resistive Metasurface", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS》, vol. 18, no. 6, 24 April 2019 (2019-04-24), pages 1223 - 1227, XP011727735, DOI: 10.1109/LAWP.2019.2913104 * |
| YUFENG YU等: "Wideband RCS Reduction of Slot Array Antenna Utilizing 3-D Absorptive Frequency-Selective Structure", 《IEEE ANTENNAS AND WIRELESS PROPAGATION LETTERS 》, vol. 21, no. 2, 6 October 2021 (2021-10-06), pages 64 - 68 * |
| 李君哲等: "一种基于超材料的雷达红外兼容隐身材料设计与验证", 《功能材料 》, vol. 48, no. 5, 30 June 2017 (2017-06-30), pages 5137 - 5143 * |
| 程友峰等: "一款具有宽带雷达截面减缩特性的三频带缝隙天线", 《2018年全国微波毫米波会议论文集》, 6 May 2018 (2018-05-06), pages 85 - 88 * |
| 耿彦峰等: "一种宽带吸波超材料在天线RCS缩减中的应用", 《测试技术学报》, vol. 36, no. 2, 12 April 2022 (2022-04-12), pages 153 - 159 * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN115425421B (en) | 2024-06-14 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Zhou et al. | Tightly coupled array antennas for ultra-wideband wireless systems | |
| CN107978858B (en) | Pattern reconfigurable antenna working in 60GHz frequency band | |
| CN108631069B (en) | Ultra-wideband vertical polarization end-fire phased array capable of integrally burying cavity | |
| CN113506987B (en) | Broadband high-gain circularly polarized filter antenna and wireless communication equipment | |
| CN114361806B (en) | Miniaturized integrated frequency selective surface that absorbs thoroughly | |
| WO2006079994A1 (en) | Radiation enhanced cavity antenna with dielectric | |
| Segovia-Vargas et al. | Quad-frequency linearly-polarized and dual-frequency circularly-polarized microstrip patch antennas with CRLH loading | |
| CN112117535A (en) | 5G millimeter wave electromagnetic hybrid dual-polarization MIMO antenna array | |
| Holland et al. | Design and fabrication of low-cost PUMA arrays | |
| CN112582808B (en) | Broadband butterfly patch antenna array suitable for millimeter wave 5G communication | |
| Ghosh et al. | A dual-layer EBG-based miniaturized patch multi-antenna structure | |
| Sokunbi et al. | Dual-layer dual-patch EBG structure for isolation enhancement and correlation reduction in MIMO antenna arrays | |
| Tan et al. | A dual-polarized Fabry-Perot cavity antenna at Ka band with broadband and high gain | |
| Gao et al. | Low cost, dual linearly polarised microstrip patch array | |
| CN115425421B (en) | Low RCS array antenna based on consumable electromagnetic super surface | |
| CN111162378A (en) | Microstrip antenna | |
| CN114614249B (en) | Broadband circularly polarized magneto-electric dipole transmission array antenna | |
| Akbari et al. | High gain circularly-polarized Fabry-Perot dielectric resonator antenna for MMW applications | |
| CN114843772A (en) | Dual-frequency dual-circular-polarization high-isolation Fabry-Perot cavity MIMO antenna and processing method thereof | |
| Yang et al. | Novel composite right/left-handed leaky-wave antennas based on the folded substrate-integrated-waveguide structures | |
| CN115133276A (en) | Dual-feed low-radar-scattering-cross-section microstrip array antenna based on metamaterial | |
| CN112003012B (en) | Gain-enhanced low-radar scattering cross section air-feed array antenna | |
| Huang et al. | Broadband and high-aperture efficiency Fabry-Perot antenna with low RCS based on nonuniform metamaterial superstrate | |
| Kasturi | Wideband characteristics of Vivaldi antenna arrays | |
| Chen et al. | Gain Enhancement of Printed Circuit Board Patch Antenna Using Electromagnetic Band Gap Structure |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |