Cylindrical conformal reconfigurable holographic surface antenna capable of dynamically regulating and controlling radiation and scattering

Abstract

The invention discloses a radiation and scattering dynamic regulation cylindrical conformal reconfigurable holographic surface antenna, which comprises a radiator and a feed source, and is characterized in that the radiator comprises M * N conformal reconfigurable holographic surface units, each conformal reconfigurable holographic surface unit comprises two dielectric layers and three metal layers, the dielectric layer is composed of a first cylindrical dielectric layer and a second cylindrical dielectric layer which are distributed from top to bottom; the metal layer comprises a holographic surface patch layer of the first metal layer, a metal ground layer of the second metal layer, a copper column layer of the third metal layer and a direct current bias layer from top to bottom; the holographic surface patch layer is H-shaped and comprises two cylindrical rectangular metal patches, and a variable capacitance diode is arranged between the metal patches; the metal ground layer serves as a floor layer of the whole antenna; the copper column layer and the direct current bias layer provide voltage difference for the variable capacitance diode, control interference pattern impedance distribution of the conformal reconfigurable holographic surface unit, and achieve radiation and scattering beam and directional diagram reconstruction.

Description

Technical Field

[0001] The invention belongs to the field of electromagnetic field and microwave technology, and particularly relates to a cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering. Background Art

[0002] As a two-dimensional artificial composite electromagnetic material, metasurface can achieve complex control of the inherent properties of electromagnetic waves by introducing field discontinuity at the electromagnetic wave incident interface. However, the beam steering antennas currently realized based on metasurfaces are mainly composed of passive metasurface units, that is, the electromagnetic response and function of the units are fixed, which cannot meet the dynamic control requirements in practical applications.

[0003] Reconfigurable technology provides a new working mechanism for realizing active metasurfaces. The propagation of electromagnetic waves is regulated in real time by external control circuits loaded on active devices to form tunable metasurfaces. In the existing tunable metasurface designs, most of them control the adjustable devices on them, so that the radiation waves can be regulated to achieve the characteristics of beam scanning, or the scattered beam can be regulated. However, it is difficult to independently control the radiation beam and the scattered beam at the same time. In addition, with the development needs of complex environments and diversified functions, a single function cannot meet the growing needs. The ability to realize multifunctional electromagnetic wave control has gradually become one of the research hotspots of metasurfaces. In addition, most of the current active metasurface antennas are planar structures. When the antenna is conformal to the cylindrical carrier platform, it is difficult to achieve stable beam control.

[0004] The metasurface antenna based on the holographic principle has the advantages of low profile, simple feed design, easy conformality and low processing cost, making the holographic surface antenna applicable to miniaturized and conformal wireless communication, radar detection and other application scenarios. Once the holographic pattern of the traditional holographic antenna is established, its far-field pattern is fixed and cannot meet the needs of wireless communication. The design of the reconfigurable holographic surface antenna improves the shortcomings of the traditional holographic surface antenna, and dynamic beamforming can be achieved without complex mechanical motion devices and phase shifting circuits. Existing research work is generally focused on realizing a reconfigurable holographic surface antenna with a single function on a planar platform, and only proves the feasibility of reconfigurable holographic surfaces to achieve dynamic beam control. At present, there is no research method for the dynamic independent control of the radiation and scattering beams of conformal reconfigurable holographic surfaces. Summary of the invention

[0005] In order to overcome the shortcomings of the above-mentioned prior art, the purpose of the present invention is to provide a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering. The holographic surface is conformal on a cylindrical carrier platform, realizing independent directional control of radiation and scattering patterns at the same time. In terms of scattering performance, the reconfigurable holographic surface has both incident angle insensitivity and low radar scattering characteristics. It is expected to solve the incomplete design of existing beam control means that only considers the planar platform, only considers the directional control of the radiation beam direction, and only considers the low radar scattering cross section, thereby broadening the application field of holographic surfaces.

[0006] In order to achieve the above object, the technical solution adopted by the present invention is:

[0007] A cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering, comprising a radiator and a feed source located at the center of the radiator; the radiator is a cylindrical structure composed of M×N conformal reconfigurable holographic surface units arranged in an array, M represents the axial number, N represents the circumferential number, M≥1, N≥1, each of the conformal reconfigurable holographic surface units comprises a dielectric layer and a metal layer;

[0008] The dielectric layer includes a first cylindrical dielectric layer at the top and a second cylindrical dielectric layer at the bottom;

[0009] The metal layer includes a holographic surface patch layer located on the upper surface of the first cylindrical dielectric layer; a metal ground layer located on the lower surface of the first cylindrical dielectric layer; a copper column layer located on the first cylindrical dielectric layer; and a DC bias layer located on the lower surface of the second cylindrical dielectric layer;

[0010] The above-mentioned cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering, the holographic surface patch layer uses reconfigurable technology and holographic principles to form a desired interference field in the far field; the metal ground layer serves as the floor layer of the entire antenna; the copper column layer and the DC bias layer provide a voltage difference for the conformal reconstructed holographic surface unit.

[0011] The above-mentioned cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering, the holographic surface patch layer is H-shaped, including two identical cylindrical rectangular metal patches one and cylindrical rectangular metal patch two, the cylindrical rectangular metal patch one and the cylindrical rectangular metal patch two are arranged axially, and a varactor is arranged in the horizontal direction between the two metal patches, the varactor is located on the upper surface of the first cylindrical dielectric layer, and is connected between the cylindrical rectangular metal patch one and the cylindrical rectangular metal patch two.

[0012] The length L1 of the cylindrical rectangular metal patch 1 and the cylindrical rectangular metal patch 2 is 3.6 mm, the width W1 is 1.6 mm, the distance d1 from the cylindrical rectangular metal patch 1 and the cylindrical rectangular metal patch 2 to the edge of the conformal reconfigurable holographic surface unit is 0.7 mm, and the spacing width W2 between the two cylindrical rectangular metal patches is 0.4 mm.

[0013] The above-mentioned cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering, the copper column layer is composed of copper column one and copper column two, wherein copper column one passes through the first cylindrical dielectric layer and the second cylindrical dielectric layer at the same time and is connected to the DC bias layer, and copper column two passes through the first cylindrical dielectric layer and is connected to the metal ground layer.

[0014] The radius r1 of the copper pillar 1 is 0.35 mm, and the height h1 is 1.398 mm. The radius r2 of the copper pillar 2 is 0.4 mm, and the height h2 is 1.27 mm.

[0015] The copper pillar 1 is located at the center of the cylindrical rectangular metal patch 1. The copper pillar 2 is located at the center of the cylindrical rectangular metal patch 2.

[0016] In the above-mentioned cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering, the metal ground layer is located on the lower surface of the first cylindrical dielectric layer, and a via is opened thereon so that the copper pillar 1 passes through the via, the radius r3 of the via is 0.7 mm, and the distance to the edge of the conformal reconfigurable holographic surface unit is the same as the distance from the copper pillar 1 to the edge of the conformal reconfigurable holographic surface unit.

[0017] The cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering, wherein the length and width of the conformal reconfigurable holographic surface unit are both a=5 mm.

[0018] In the above-mentioned cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, the thickness h3 of the first cylindrical dielectric layer is 1.27 mm, the radius is 160 mm, and the center angle is 37.6°; the thickness h4 of the second cylindrical dielectric layer is 0.128 mm, the radius is 158.73 mm, and the center angle is 37.9°. The total thickness of the conformal reconfigurable holographic surface unit is 1.398 mm, and the material of the cylindrical dielectric layer is Taconic RF-60 material with a relative dielectric constant of 6.15.

[0019] In the above cylindrical conformal reconfigurable holographic surface antenna with dynamic radiation and scattering control, when the voltage applied to the copper column changes, the varactor diode will present different working states, and the holographic surface unit will also have a surface impedance that changes with the working state of the varactor diode. The interference pattern impedance distribution of the radiator can be adjusted, thereby realizing the reconfiguration of the radiation and scattering beams.

[0020] In the above-mentioned cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering, the feed source adopts a monopole antenna structure, and the center of the monopole antenna cylindrical conductor coincides with the center normal of the radiator.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] First, the present invention innovatively uses conformal reconfigurable holographic surfaces to simultaneously and independently control radiation and scattered waves, realizing radiation dynamic beamforming, having incident angle insensitivity in the scattering state, realizing scattered multi-beam splitting and directional control, and greatly improving the flexibility of application.

[0023] Second, the present invention innovatively applies reconfigurable holographic surfaces to reduce the radar cross section of conformal platforms, has good stealth characteristics, and broadens its application scenarios.

[0024] Third, the present invention utilizes a reconfigurable holographic surface unit, which has a simple structure and high design flexibility, and is suitable for multifunctional devices such as wireless communications, multi-target tracking of radar systems, and low radar cross-sections.

[0025] In summary, the cylindrical conformal reconfigurable holographic surface of the present invention can realize independent and continuous control of the radiation beam and the scattered beam at the same time, and is expected to be applied to new-system wireless communications, radar detection, and reduction of radar scattering cross section on cylindrical structure carrier platforms. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is an overall schematic diagram of the conformal reconfigurable holographic surface of the present invention.

[0027] Figure 2 This is a three-dimensional schematic diagram of the conformal reconfigurable holographic surface unit used.

[0028] Figure 3 It is a side view of the conformal reconfigurable holographic surface unit adopted by the present invention.

[0029] Figure 4 The diagram is a size illustration of the conformal reconfigurable holographic surface unit structure used in the present invention, wherein (a) is a size illustration of the holographic surface unit patch layer, and (b) is a size illustration of the cylindrical dielectric layer, the copper column layer and the via.

[0030] Figure 5 This is a radiation pattern beam scanning simulation result of an embodiment of the present invention.

[0031] Figure 6It is the simulation result of the scattered multi-beam splitting and directional control under the vertical incident wave of the embodiment of the present invention, among which (a) is the dual-beam directional control scattering pattern, (b) is the four-beam directional control scattering pattern, (c) is the ±20° four-beam directional control 3D scattering pattern, and (d) is the ±60° four-beam directional control 3D scattering pattern.

[0032] Figure 7 It is the scattered directional beam enhanced scanning result under the oblique incident wave of the embodiment of the present invention, wherein (a) is the scattering direction diagram with the same exit angle and incident angle, and (b) is the reflection scattering direction diagram of any deflection angle under the same incident angle.

[0033] Figure 8 It is a comparison diagram of radar cross section reduction simulation results of monopoles with and without loaded conformal reconfigurable holographic surfaces according to an embodiment of the present invention.

[0034] In the figure: 1. radiator; 2. feed source; 3. first cylindrical dielectric layer; 4. second cylindrical dielectric layer; 5. via; 11. conformal reconfigurable holographic surface basic unit; 111. holographic surface patch layer; 112. metal ground layer; 113; copper pillar layer; 114. DC bias layer; 1111. cylindrical rectangular metal patch one; 1112. cylindrical rectangular metal patch two; 1113. varactor diode; 1131; copper pillar one; 1132. copper pillar two. DETAILED DESCRIPTION

[0035] The embodiments of the present invention are described in detail below with reference to the accompanying drawings and examples.

[0036] As mentioned above, there are still some problems in the independent control methods of radiation and scattering beams. To this end, the present invention provides a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, which realizes dynamic scanning of beams within the range of -50° to 50°, beam splitting and directional control within ±60° under vertical incident plane waves in the scattering state, enhanced scattering directivity within ±60° under oblique incidence, and effectively reduces the radar cross section by uniformly suppressing scattering. It has the characteristics of insensitivity to incident angles and low radar cross section, and is suitable for applications such as wireless communications and radar detection in complex environments.

[0037] In order to further illustrate the effects of the present invention, specific examples are given.

[0038] refer to Figure 1As shown, the cylindrical conformal reconfigurable holographic surface antenna with dynamic radiation and scattering control of the present invention includes a radiator 1 and a feed source 2 located at the center of the radiator 1; the radiator 1 is composed of 440 conformal reconfigurable holographic surface units 11 replicated and presents a cylindrical structure. The feed source 2 adopts a monopole antenna structure. The center of the monopole antenna cylindrical conductor coincides with the center normal of the radiator 1 to generate a surface wave.

[0039] In the present invention, the conformal reconfigurable holographic surface unit 11 is arranged in an array to modulate the surface wave into a radiation wave by using its ability to modulate the surface wave.

[0040] refer to Figure 2 and Figure 3 As shown, each conformal reconfigurable holographic surface unit 11 includes a dielectric layer and a metal layer; wherein the dielectric layer includes a first cylindrical dielectric layer 3 above and a second cylindrical dielectric layer 4 below; the metal layer includes a holographic surface patch layer 111 located on the upper surface of the first cylindrical dielectric layer 3; a metal ground layer 112 located on the lower surface of the first cylindrical dielectric layer 3; a copper column layer 113 located on the first cylindrical dielectric layer 3; and a DC bias layer 114 located on the lower surface of the second cylindrical dielectric layer 4.

[0041] In the present invention, "up" refers to the outer surface direction of the cylinder; "down" refers to the inner surface direction of the cylinder.

[0042] The holographic surface patch layer 111 is arranged in a distribution change according to the holographic principle, and is in an H shape, including two identical cylindrical rectangular metal patches 1 1111, a cylindrical rectangular metal patch 2 1112, and a horizontal variable capacitance diode 1113 connected between the two metal patches. The H shape is conducive to achieving accurate beamforming and scanning.

[0043] When the voltage applied to the copper pillar 1 changes, the varactor 1112 presents different working states, and the conformal reconfigurable holographic surface 11 has a surface impedance that changes with the working state of the varactor 1112. The interference pattern impedance distribution of the radiator 1 can be adjusted, thereby achieving reconfigurable radiation and scattering beams.

[0044] The copper pillar layer 113 provides a voltage difference to the varactor diode 1112, which is composed of two copper pillars, namely copper pillar 1 1131 and copper pillar 2 1132, wherein copper pillar 1 1131 passes through the first cylindrical dielectric layer 3 and the second cylindrical dielectric layer 4 at the same time, and is connected to the DC bias layer 114, providing an external reverse bias voltage to the varactor diode. Copper pillar 2 1132 passes through the first cylindrical dielectric layer 4, and is connected to the metal ground layer 112, providing a fixed ground voltage to the varactor diode.

[0045] The DC bias layer 114 is located on the lower surface of the second cylindrical dielectric layer 4 and provides excitation for the holographic surface patch layer 111 .

[0046] In one embodiment of the present invention, reference Figure 4 As shown in (a), the length and width of the conformal reconfigurable holographic surface unit 11 are both a=5 mm. The length refers to the axial length, and the width refers to the dimension along the circumference of the cylinder. Under this overall dimension limitation, further:

[0047] The length L1 of the cylindrical rectangular metal patch 1111 and the width W1 of the cylindrical rectangular metal patch 2 1112 is 3.6 mm, and the width W1 is 1.6 mm. The distances from the cylindrical rectangular metal patch 1111 and the cylindrical rectangular metal patch 2 1112 to the edge of the holographic surface unit are both d1=0.7 mm, and the spacing width W2 between the two cylindrical rectangular metal patches is 0.4 mm. The distance to the edge here refers to the distance to the axial edge.

[0048] refer to Figure 4 As shown in (b), the radius r1 of the copper pillar 1 1131 is 0.35 mm, and the height h1 is 1.398 mm. The radius r2 of the copper pillar 2 1132 is 0.4 mm, and the height h2 is 1.27 mm.

[0049] The thickness h3 of the first cylindrical dielectric layer 3 is 1.27 mm, the radius is 160 mm, and the center angle is 37.6°; the thickness h4 of the second cylindrical dielectric layer 4 is 0.128 mm, the radius is 158.73 mm, and the center angle is 37.9°. The total thickness of the conformal reconfigurable holographic surface unit 11 is 1.398 mm, and the material of the dielectric layer is Taconic RF-60 material with a relative dielectric constant of 6.15.

[0050] The copper pillar 1 1131 is located at the center of the cylindrical rectangular metal patch 1 1111 , and the copper pillar 2 1132 is located at the center of the cylindrical rectangular metal patch 2 1112 , ensuring that the common reconfigurable holographic surface unit 11 is symmetrical.

[0051] The metal ground layer 112 is located on the lower surface of the first cylindrical dielectric layer 3, and a via hole 5 is opened thereon, so that the copper pillar 1131 passes through the via hole, and the radius r3 of the via hole 5 is 0.7 mm, and the distance to the edge of the conformal reconfigurable holographic surface unit 11 is the same as the distance from the copper pillar 1131 to the edge of the conformal reconfigurable holographic surface unit 11.

[0052] The structural dimensions of a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering according to this embodiment are shown in Table 1.

[0053] Table 1

[0054] structure L1 W1 W2 d1 a h1 h2 Dimensions (mm) 3.6 1.6 0.4 0.7 5 1.398 1.27 structure h3 h4 r1 r2 r3 Dimensions (mm) 1.27 0.128 0.35 0.3 0.7

[0055] The effect of the embodiment of the present invention can be further illustrated by the following simulation:

[0056] 1. Simulation software:

[0057] Commercial Ansoft HFSS19.0 software.

[0058] 2. Simulation content:

[0059] Simulation 1, in the embodiment of the present invention, the impedance distribution of the radiator interference pattern is changed, and the radiation beam scanning is simulated at a frequency of 10 GHz, such as Figure 5 shown.

[0060] from Figure 5 It can be seen that the radiation beam achieves dynamic beam scanning from -50° to 50°.

[0061] Simulation 2: In the embodiment of the present invention, the impedance distribution of the radiator interference pattern is changed, and the scattering pattern under the y-polarized vertical incident plane wave at a frequency of 10 GHz is simulated, as shown in FIG. Figure 6 As shown, (a) is the dual-beam directional control scattering pattern, (b) is the four-beam directional control scattering pattern, (c) is the ±20° four-beam directional control 3D scattering pattern, and (d) is the ±60° four-beam directional control 3D scattering pattern.

[0062] from Figure 6 It can be seen that the outgoing scattered main beam under the y-polarized vertical incident plane wave can be flexibly deflected within ±60°.

[0063] Simulation 3, in the embodiment of the present invention, by changing the impedance distribution of the radiator interference pattern, the scattering pattern under the y-polarized oblique incident plane wave at a frequency of 10 GHz is simulated, as shown in FIG. Figure 7 As shown in the figure, (a) is the scattering direction diagram when the exit angle is the same as the incident angle, and (b) is the reflection scattering direction diagram at any deflection angle under the same incident angle.

[0064] from Figure 7 The outgoing scattered main beam under oblique incident plane wave achieves scattering enhancement within ±60°, ensuring the incident angle insensitivity of the conformal reconfigurable holographic surface.

[0065] Simulation 4, by changing the impedance distribution of the radiator interference pattern in the embodiment of the present invention, a comparison chart of the radar cross section reduction simulation results of the monopole with and without the reconfigurable holographic surface loaded with the y-polarized vertical incident plane wave with frequency changes, as shown in FIG. Figure 8 As shown, from Figure 8It can be seen that the radar scattering cross section under y-polarized vertical incident plane wave is well reduced in the wide frequency band of 6.8 to 23.6 GHz, ensuring the low radar scattering characteristics of the conformal holographic surface.

[0066] The above simulation results show that the conformal holographic surface of the present invention can realize independent control of radiation and scattered beams, and has the characteristics of incident angle insensitivity and low radar cross-section in the scattering state.

[0067] The above description is only an example and does not constitute any limitation to the present invention. It is obvious that for professionals in this field, after understanding the content and principles of the present invention, it is possible to make various modifications and changes in form and details without departing from the principles and structures of the present invention. However, these modifications and changes based on the ideas of the present invention are still within the scope of the claims and protection of the present invention.

Claims

1. A cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The invention comprises a radiator (1) and a feed source (2) located at the center of the radiator (1); the radiator (1) is a cylindrical structure composed of M×N conformal reconfigurable holographic surface units (11) arranged in an array, M represents the axial number, N represents the circumferential number, M≥1, N≥1, and each of the conformal reconfigurable holographic surface units (11) comprises a dielectric layer and a metal layer; The dielectric layer comprises an upper first cylindrical dielectric layer (3) and a lower second cylindrical dielectric layer (4); The metal layer comprises a holographic surface patch layer (111) located on the upper surface of the first cylindrical medium layer (3); and a metal ground layer (112) located on the lower surface of the first cylindrical medium layer (3); A copper column layer (113) located on the first column dielectric layer (3); and a direct current bias layer (114) located on the lower surface of the second column dielectric layer (4).

2. According to claim 1, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The holographic surface patch layer (111) utilizes reconfigurable technology and holographic principles to form a desired interference field in the far field; the metal ground layer (112) serves as the floor layer of the entire antenna; and the copper column layer (113) and the DC bias layer (114) provide a voltage difference for the conformal reconfigurable holographic surface unit (11).

3. According to claim 1, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The holographic surface patch layer (111) is H-shaped and comprises a first cylindrical rectangular metal patch (1111) and a second cylindrical rectangular metal patch (1112) that are identical. The first cylindrical rectangular metal patch (1111) and the second cylindrical rectangular metal patch (1112) are arranged along the axial direction. A variable capacitance diode (1113) is arranged in the horizontal direction between the two metal patches. The variable capacitance diode (1113) is located on the upper surface of the first cylindrical dielectric layer (3) and is connected between the first cylindrical rectangular metal patch (1111) and the second cylindrical rectangular metal patch (1112).

4. According to claim 3, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The length and width of the conformal reconfigurable holographic surface unit (11) are both a=5 mm, the length L1 of the cylindrical rectangular metal patch 1 (1111) and the cylindrical rectangular metal patch 2 (1112) are 3.6 mm, the width W1 is 1.6 mm, the distance d1 from the cylindrical rectangular metal patch 1 (1111) and the cylindrical rectangular metal patch 2 (1112) to the edge of the conformal reconfigurable holographic surface unit (11) is 0.7 mm, and the spacing W2 between the cylindrical rectangular metal patch 1 (1111) and the cylindrical rectangular metal patch 2 (1112) is 0.4 mm.

5. According to claim 3, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The copper pillar layer (113) is composed of a copper pillar 1 (1131) and a copper pillar 2 (1132), wherein the copper pillar 1 (1131) passes through the first cylindrical dielectric layer (3) and the second cylindrical dielectric layer (4) at the same time and is connected to the DC bias layer (114), and the copper pillar 2 (1132) passes through the first cylindrical dielectric layer (4) and is connected to the metal ground layer (112).

6. According to claim 5, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: When the voltage applied to the copper pillar 1 (1131) changes, the varactor diode (1112) presents different working states, and the conformal reconfigurable holographic surface unit (11) has a surface impedance that changes with the working state of the varactor diode (1112), and can adjust the interference pattern impedance distribution of the radiator (1), thereby realizing the reconfiguration of the radiation and scattering beams.

7. According to claim 5, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The copper pillar 1 (1131) is located at the center of the cylindrical rectangular metal patch 1 (1111), and the copper pillar 2 (1132) is located at the center of the cylindrical rectangular metal patch 2 (1112).

8. According to claim 5, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The radius r1 of the copper pillar 1 (1131) is 0.35 mm, and the height h1 is 1.398 mm; the radius r2 of the copper pillar 2 (1132) is 0.4 mm, and the height h2 is 1.27 mm; the thickness h3 of the first cylindrical dielectric layer (3) is 1.27 mm, the radius is 160 mm, and the center angle is 37.6°; the thickness h4 of the second cylindrical dielectric layer (4) is 0.128 mm, the radius is 158.73 mm, and the center angle is 37.9°; the total thickness of the conformal reconfigurable holographic surface unit (11) is 1.398 mm, and the material of the dielectric layer is Taconic RF-60 material with a relative dielectric constant of 6.

15.

9. According to claim 5, a cylindrical conformal reconfigurable holographic surface antenna with dynamic control of radiation and scattering, characterized in that: The metal ground layer (112) is provided with a via hole (5) so that the copper pillar 1 (1131) passes through the via hole. The radius r3 of the via hole (5) is 0.7 mm, and the distance to the edge of the conformal reconfigurable holographic surface unit (11) is the same as the distance from the copper pillar 1 (1131) to the edge of the conformal reconfigurable holographic surface unit (11).

10. The cylindrical conformal reconfigurable holographic surface antenna with dynamically controlled radiation and scattering according to claim 1, characterized in that: The feed source (2) adopts a monopole antenna structure, and the center of the monopole antenna cylindrical conductor coincides with the center normal of the radiator (1).

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