Conformal artificial surface plasmon phased array antenna working in high and low frequency time-sharing mode

Abstract

The application discloses a conformal artificial surface plasmon phased array antenna working in high and low frequency time-sharing mode, which comprises a conformal bottom plate, a first / second antenna fixed base arranged on the upper surface of the conformal bottom plate respectively, the upper surfaces of the two bases are provided with multiple rows of grooves, and multiple rows of high / low frequency leaky-wave antenna groups are fixed in the grooves on the upper surfaces of the first / second antenna fixed base through the mode of inserting sheets, and the high / low frequency leaky-wave antenna group comprises a row of high / low frequency leaky-wave antennas; wherein the high / low frequency leaky-wave antenna is an artificial surface plasmon antenna working in a high / low frequency band, the working states of the high / low frequency leaky-wave antennas of the same group are the same during frequency scanning; the high frequency leaky-wave antennas and the low frequency leaky-wave antennas work in time-sharing mode to realize multi-band detection. The application has high integration, low phased control cost, high beam scanning range and high precision, and is convenient for realizing conformal design.

Description

Technical Field

[0001] The present invention belongs to the field of antenna technology, and in particular relates to a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode. Background Art

[0002] The development of wearable devices and in-vehicle communication platforms has placed higher demands on the environmental perception capabilities of RF antenna systems to meet the needs of multi-band detection. Current RF antenna systems typically use passive frequency scanning and active phase scanning technologies to achieve multi-band detection and communication functions.

[0003] Passive frequency-scanning antennas achieve beam scanning through mechanical rotation or electrical tuning. Although this method can cover a wide range of frequency bands, its mechanical structure is complex, the antenna is large and heavy, the mechanical rotating parts are easily damaged, and it is difficult to achieve conformal design with the platform surface, which affects the system's flexibility and tuning performance.

[0004] Active phase-scan antennas utilize electronic phased arrays to control beam direction, adjusting the phase of each antenna element through phase shifters to achieve rapid beam scanning. This system requires the integration of multiple RF modules and antennas to ensure effective operation across different frequency bands. Consequently, active phase-scan antenna systems have low integration density, high power consumption, and high cost.

[0005] Therefore, the current RF antenna system with multi-band frequency scanning function is difficult to achieve conformal design, and the system integration is low and the cost is high; in addition, its beam scanning range and accuracy are limited, it is difficult to achieve large-angle beam coverage, and it cannot fully adapt to the wide-area detection needs in complex electromagnetic environments. Summary of the Invention

[0006] An embodiment of the present invention provides a conformal artificial surface plasmon phased array antenna that operates in high and low frequency time-sharing, which can solve the problems that current RF antenna systems with multi-band frequency scanning functions are difficult to achieve conformal design, have low system integration and high cost; in addition, their beam scanning range and accuracy are limited, making it difficult to achieve large-angle beam coverage, and cannot fully adapt to the wide-area detection needs in complex electromagnetic environments.

[0007] In a first aspect, an embodiment of the present invention provides a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode, comprising:

[0008] Conformal baseplate;

[0009] A first antenna fixing base and a second antenna fixing base are respectively arranged on both sides of the upper surface of the conformal base plate, and the upper surfaces of the first antenna fixing base and the second antenna fixing base are both provided with multiple rows of grooves;

[0010] A plurality of high-frequency leaky-wave antenna groups are fixed in grooves on the upper surface of the first antenna fixing substrate by means of inserts. The high-frequency leaky-wave antenna group includes a row of high-frequency leaky-wave antennas. The high-frequency leaky-wave antennas are artificial surface plasmon antennas operating in the high-frequency band. During frequency sweeping, the high-frequency leaky-wave antennas in the same group have the same operating state.

[0011] Multiple columns of low-frequency leaky-wave antenna groups are fixed in grooves on the upper surface of the second antenna fixing substrate by means of inserts. The low-frequency leaky-wave antenna group includes a column of low-frequency leaky-wave antennas. The low-frequency leaky-wave antennas are artificial surface plasmon antennas operating in the low-frequency band. During frequency scanning, the same group of low-frequency leaky-wave antennas have the same working state. The high-frequency leaky-wave antennas and the low-frequency leaky-wave antennas operate in different time periods to achieve multi-band detection.

[0012] In a second aspect, an embodiment of the present invention provides a detection device based on a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing, comprising the conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing and the antenna wave control component in the above-mentioned first aspect.

[0013] Compared with the prior art, the embodiments of the present invention have the following advantages: the present invention is composed of only three components, namely a leaky wave antenna group, an antenna fixing base and a conformal bottom plate, and the leaky wave antenna group is fixed by means of an insert, so the structure is relatively simple, which facilitates the conformal design with the mounting surface of the mounting device; and, during frequency scanning, scanning is performed in units of a group of high / low frequency leaky wave antennas, rather than a single leaky wave antenna; therefore, the present invention can achieve two-dimensional beam scanning only through a one-dimensional phased array solution, and at the same time, fewer radio frequency modules and antenna groups can improve system integration, reduce control costs and manufacturing costs; making antenna groups with different working frequency bands work in time periods can also achieve multi-band detection functions; by using artificial surface plasmon antennas for detection, large-angle beam coverage can be achieved, the beam scanning range can be expanded, and the scanning accuracy can be improved; setting antennas with different working frequency bands separately can also improve the radiation efficiency of the antenna and reduce transmission loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 A schematic structural diagram of a high-frequency leaky-wave antenna group provided by an embodiment of the present invention;

[0015] Figure 2 A schematic diagram of the disassembled structures of a high-frequency leaky-wave antenna group provided by an embodiment of the present invention;

[0016] Figure 3 A schematic diagram of parameters of a high-frequency leaky-wave antenna group provided by an embodiment of the present invention;

[0017] Figure 4A schematic structural diagram of a low-frequency leaky-wave antenna group provided by an embodiment of the present invention;

[0018] Figure 5 A schematic structural diagram of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode provided by an embodiment of the present invention;

[0019] Figure 6 A schematic structural diagram from another perspective of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode provided by an embodiment of the present invention;

[0020] Figure 7 A schematic structural diagram from another perspective of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode provided by an embodiment of the present invention;

[0021] Figure 8 A detection device based on a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode is provided in an embodiment of the present invention;

[0022] Figure 9 A schematic diagram of S-parameter simulation results of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode provided by an embodiment of the present invention;

[0023] Figure 10 A schematic diagram of simulation results of the beam pointing angle of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode provided by an embodiment of the present invention;

[0024] Figure 11 A schematic diagram of simulation results of the radiation efficiency of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing provided by an embodiment of the present invention. DETAILED DESCRIPTION

[0025] The present invention will be further described in detail below with reference to specific examples, but the embodiments of the present invention are not limited thereto.

[0026] Example 1

[0027] Figure 1 The figure shows a schematic structural diagram of a high-frequency leaky wave antenna group provided by an embodiment of the present invention. As an example and not a limitation, the high-frequency leaky wave antenna group 1 may include a first high-frequency leaky wave antenna 11 , a second high-frequency leaky wave antenna 12 and a first dielectric plate 13 .

[0028] In some embodiments, see Figure 2 In (a), the first high-frequency leaky wave antenna 11 and the second high-frequency leaky wave antenna 12 are arranged in a row; the first high-frequency leaky wave antenna 11 is also symmetrically slidably with the second high-frequency leaky wave antenna, for example Figure 2The first high-frequency leaky-wave antenna 201 and the second high-frequency leaky-wave antenna 202 in FIG. Figure 1 The first high-frequency leaky wave antenna 11 and the second high-frequency leaky wave antenna 12 are also arranged in conformity with the upper surface of the conformal base plate. At the same time, the bottoms of the first high-frequency leaky wave antenna 11 and the second high-frequency leaky wave antenna 12 are also connected in series through a metal material that is the same as the antenna material (see Figure 2 The light grey filled portion in (a) of FIG. 1 ) enables the high frequency leaky wave antennas of the same group to be scanned as a whole unit during frequency sweeping. The middle portion of the first dielectric plate 13 may be provided with a transverse slot conforming to the upper surface of the conformal bottom plate (see FIG. Figure 2 (b) in FIG. 1 ). The first high-frequency leaky wave antenna 11 and the second high-frequency leaky wave antenna 12 can be fixed to both sides of the horizontal slot by means of horizontal inserts. This facilitates the installation and maintenance of the antenna.

[0029] For example, see Figure 2 When the connected first high-frequency leaky wave antenna 11 and second high-frequency leaky wave antenna 12 components are inserted into the horizontal card slot along the direction indicated by arrow 203, the first dielectric plate 13 above the horizontal card slot can be stuck above the metal connecting the first high-frequency leaky wave antenna 11 and the second high-frequency leaky wave antenna 12, isolating the first high-frequency leaky wave antenna 11 and the second high-frequency leaky wave antenna 12.

[0030] In one possible implementation, the first high-frequency leaky-wave antenna 11 and the second high-frequency leaky-wave antenna 12 may both be artificial surface plasmon antennas operating in a high-frequency band; their operating frequencies may include 2f0-3f0 GHz, with f0 being the fundamental frequency.

[0031] For example, the artificial surface plasmon antenna consists of microstrip feeding, impedance matching, mode conversion and periodic leakage radiation. Through customized periodic size and structural shape, it can achieve unilateral leakage and efficient radiation in any frequency band, and has the characteristics of strong binding and unilateral leakage.

[0032] In one example, the materials of the first high-frequency leaky wave antenna 11 and the second high-frequency leaky wave antenna 12 may include: silver, which has good conductivity and is widely used in the main structure of the antenna to achieve feeding and radiation, or aluminum alloy, copper, stainless steel, copper-plated steel, titanium alloy, nickel alloy, composite materials with conductive coating, etc.

[0033] In one example, see Figure 3 In (a), the distance H1 between two adjacent first high-frequency leaky-wave antennas 11 or two adjacent second high-frequency leaky-wave antennas 12 may be in the range of 3.0-5.0 mm. Figure 3In (b), the length L1 of the dispersion periodic structure composed of the symmetrical first high-frequency leaky-wave antenna 11 and the second high-frequency leaky-wave antenna 12 may range from 4.5 to 7.5 mm, see Figure 3 In (c), the working slot depth W1 of the dispersion periodic structure can range from 2.0 to 4.0 mm, so that the high-frequency leaky-wave antenna group 1 can have the scanning capability from 90° to 16°.

[0034] For example, see Figure 1 The bottom of the first dielectric plate 13 can conform to the upper surface of the conformal base plate. When the upper surface of the conformal base plate is a curved surface with a deflection range of 15-45 mm, the slot depth of each dispersive periodic structure in the high-frequency leaky-wave antenna group can be gradually increased from 0 to the working slot depth.

[0035] Optionally, the number of dispersive periodic structures having a groove depth equal to the working groove depth W1 may range from 3 to 8, and the number of dispersive periodic structures having a groove depth between 0 and the working groove depth W1 may range from 5 to 12.

[0036] In a possible implementation, the first dielectric plate 13 may be a low-loss dielectric plate with a dielectric constant of 3.4 and a loss tangent of 0.001.

[0037] For example, the model of the first dielectric plate 13 may be Rogers RO3003.

[0038] Example 2

[0039] Figure 4 Detailed description is given in FIG. 1 which is a structural diagram of a low-frequency leaky-wave antenna group provided by an embodiment of the present invention.

[0040] Similarly, the low-frequency leaky-wave antenna group 2 may include a plurality of first low-frequency leaky-wave antennas 21 , a plurality of second low-frequency leaky-wave antennas 22 , and a second dielectric plate 23 .

[0041] In some embodiments, the first low-frequency leaky wave antenna 21 and the second low-frequency leaky wave antenna 22 are each arranged in a row and conformal to the upper surface of the conformal base plate. The first low-frequency leaky wave antenna is also slidingly symmetrical with the second low-frequency leaky wave antenna. At the same time, the bottoms of the first low-frequency leaky wave antenna 21 and the second low-frequency leaky wave antenna 22 are also connected in series through a metal with the same antenna material, so that the low-frequency leaky wave antennas of the same group can be scanned as a whole unit during frequency scanning. The middle part of the second dielectric plate 23 can be provided with a transverse card groove that is conformal to the upper surface of the conformal base plate. The first low-frequency leaky wave antenna 21 and the second low-frequency leaky wave antenna 22 can be fixed on both sides of the transverse card groove by means of transverse inserts. This facilitates the installation and maintenance of the antenna.

[0042] Exemplarily, when the connected first low-frequency leaky wave antenna 21 and second low-frequency leaky wave antenna 22 components are inserted into the transverse card slot, the second dielectric plate 23 above the transverse card slot can be stuck above the metal connecting the first low-frequency leaky wave antenna 21 and the second low-frequency leaky wave antenna 22, isolating the first low-frequency leaky wave antenna 21 and the second low-frequency leaky wave antenna 22.

[0043] In a possible implementation, the first low-frequency leaky-wave antenna 21 and the second low-frequency leaky-wave antenna 22 may both be artificial surface plasmon antennas operating in a low-frequency band; their operating frequencies may be 1f0-2f0 GHz.

[0044] In one example, the materials of the first low-frequency leaky wave antenna 21 and the second low-frequency leaky wave antenna 22 may include: silver, aluminum alloy, copper, stainless steel, copper-plated steel, titanium alloy, nickel alloy or a composite material with a conductive coating.

[0045] In one example, the spacing H2 between two adjacent first low-frequency leaky-wave antennas 21 or two adjacent second low-frequency leaky-wave antennas 22 may range from 5.5 to 8.0 mm. The length L2 of the dispersive periodic structure formed by the symmetrical first low-frequency leaky-wave antennas 21 and second low-frequency leaky-wave antennas 22 may range from 9.5 to 13.5 mm, and the working slot depth W2 may range from 1.5 to 2.5 mm. This enables the low-frequency leaky-wave antenna group 1 to scan from 85° backward to 30° forward.

[0046] For example, see Figure 4 The bottom of the second dielectric plate 23 can conform to the upper surface of the conformal base plate. When the upper surface of the conformal base plate is a curved surface with a deflection range of 15-45 mm, the slot depth of each dispersive periodic structure in the low-frequency leaky-wave antenna group can be gradually increased from 0 to the working slot depth.

[0047] Optionally, the number of dispersive periodic structures having a groove depth equal to the working groove depth W1 may range from 3 to 8, and the number of dispersive periodic structures having a groove depth between 0 and the working groove depth W1 may range from 5 to 12.

[0048] In a possible implementation, the second dielectric plate 23 may be a low-loss dielectric plate with a dielectric constant of 3.4 and a loss tangent of 0.001.

[0049] For example, the model of the second dielectric plate 23 may be Rogers RO3003.

[0050] Example 3

[0051] On the basis of Example 2 and Example 3, Figure 5The figure shows a schematic diagram of the structure of a conformal surface plasmon phased array antenna for high- and low-frequency time-sharing operation, provided by an embodiment of the present invention. By way of example and not limitation, the conformal surface plasmon phased array antenna for high- and low-frequency time-sharing operation may include a multi-column high-frequency leaky-wave antenna group 1, a multi-column low-frequency leaky-wave antenna group 2, a first antenna mounting substrate 3, a second antenna mounting substrate 4, and a conformal base plate 5.

[0052] In some embodiments, see Figure 5 The first and second antenna mounting bases 3 and 4 can be positioned on either side of the top surface of the conformal base plate 5, each having multiple rows of grooves. The high-frequency leaky-wave antenna group 1 and the low-frequency leaky-wave antenna group 2 can be secured to the grooves on the top surfaces of the first and second antenna mounting bases 3 and 4, respectively, using inserts. During frequency sweeping, the high- and low-frequency leaky-wave antennas in the same group operate in the same manner.

[0053] For example, see Figure 5 The lower surface of the conformal base plate may also be provided with a plurality of RF connectors.

[0054] For example, the thickness of the high-frequency leaky-wave antenna assembly 1 or the low-frequency leaky-wave antenna assembly 2 may range from 0.4 to 1.0 mm, and the height may range from 7.5 to 10.5 mm. Antenna assemblies within this height range have a lower profile compared to traditional plug-in wide-beam phased arrays.

[0055] In a possible implementation, the high-frequency leaky wave antenna group 1 is shorter and operates in the high-frequency band; the low-frequency leaky wave antenna group 2 is longer and operates in the low-frequency band. A group of high-frequency leaky wave antenna group 1 and low-frequency leaky wave antenna group 2 can realize frequency sweep direction (see Figure 6 By taking a group of high / low frequency leaky wave antenna groups as the minimum unit, controlling each group of high frequency leaky wave antenna group 1 and low frequency leaky wave antenna group 2 to achieve the antenna arrangement direction (see Figure 6 thereby achieving two-dimensional beam scanning through a one-dimensional phase control scheme.

[0056] Alternatively, see Figure 6 The conformal artificial surface plasmon phased array antenna working in high and low frequency time-sharing can include 32 columns of high-frequency leaky wave antenna groups 1 and low-frequency leaky wave antenna groups 2. The 32 columns of high-frequency leaky wave antenna groups 1 constitute a high-frequency array, and the 32 columns of low-frequency leaky wave antenna groups 2 constitute a low-frequency array. The high-frequency array and the low-frequency array work in time-sharing to realize multi-band detection function.

[0057] In one example, the high-frequency leaky-wave antenna group 1 can be vertically inserted into the first dielectric plate 13 so that the first dielectric plate 13 below the transverse slot is fixed in the groove on the upper surface of the first antenna fixing base 3. The low-frequency leaky-wave antenna group 2 can be vertically inserted into the second dielectric plate 23 so that the second dielectric plate 23 below the transverse slot is fixed in the groove on the upper surface of the second antenna fixing base 4.

[0058] Optionally, the material of the first antenna fixing base 3 and the second antenna fixing base 4 may include resin.

[0059] In a possible implementation, the conformal base plate 5 may include a conformal shell 51 , supporting side plates 52 and a supporting transverse plate 53 .

[0060] For example, see Figure 7 The conformal shell 51 can conform to the mounting surface of the mounting device. For example, if the mounting surface is a cylinder, the conformal shell can be a curved surface with the same deflection as the cylinder. Support side panels 52 can be provided on either side of the lower surface of the conformal shell 51. Their upper surfaces can mate with the lower surface of the conformal shell 51, and the lower surfaces of the support side panels 52 and the conformal shell 51 are coplanar. A support cross plate 53 is provided between the two support side panels 52, connecting the two support side panels 52. The support cross plate 53 is also provided on the lower surface of the conformal shell 51.

[0061] The conformal shell is supported by two supporting side plates and a supporting cross plate, thereby realizing a hollow design at the bottom of the conformal base plate, which can reduce the overall weight of the conformal base plate. At the same time, the supporting side plates and the supporting cross plate can act as reinforcement ribs to reinforce the conformal base plate in two directions, preventing accidental deformation caused by the thick conformal shell, and enhancing the robustness and practicality during processing.

[0062] In one example, see Figure 6 , the conformal shell 31 can be a metal plate with a deflection of 32 mm, which is along the frequency sweep direction (see Figure 6 The length of the antenna group 1 (in the direction indicated by the arrow 601) can be 290 mm, along the arrangement direction of the high-frequency leaky wave antenna group 1 / low-frequency leaky wave antenna group 2 (see Figure 6 The length of the optical fiber 200 (in the direction indicated by the middle arrow 602) can be 300 mm.

[0063] Exemplarily, the first antenna fixing base 3 , the second antenna fixing base 4 and the conformal housing 51 may be fixed by metal screws, such as copper screws.

[0064] In one example, see Figure 7 The RF connector may be a high-frequency RF connector, which may be fixed to the lower surface of the conformal housing 31 through a double-hole flange. The RF connector may implement inner conductor microstrip feeding through a via at the bottom.

[0065] The present invention consists of only three components: a leaky wave antenna group, an antenna fixing base and a conformal bottom plate, and the leaky wave antenna group is fixed by means of an insert, so the structure is relatively simple, which facilitates the conformal design with the mounting surface of the mounting device; and, during frequency scanning, scanning is performed in units of a group of high / low frequency leaky wave antennas rather than a single leaky wave antenna. The present invention can achieve two-dimensional beam scanning through only a one-dimensional phased array solution. At the same time, fewer radio frequency modules and antenna groups can improve system integration and reduce control and manufacturing costs; making antenna groups with different working frequency bands work in time periods can also realize multi-band detection functions; by using artificial surface plasmon antennas for detection, large-angle beam coverage can be achieved, the beam scanning range can be expanded, and the scanning accuracy can be improved; and setting antennas with different working frequency bands separately can also improve the radiation efficiency of the antenna and reduce transmission loss.

[0066] Example 4

[0067] Based on Example 3, Figure 8 A detection device based on a conformal surface plasmon phased array antenna operating in high- and low-frequency time-sharing mode, provided in an embodiment of the present invention, is shown. By way of example and not limitation, the detection device may include the conformal surface plasmon phased array antenna 10 operating in high- and low-frequency time-sharing mode and the antenna beam control assembly 20 shown in Example 3.

[0068] For example, see Figure 8 The antenna wave control component 20 can be externally provided with multiple, for example 64, ultra-small radio frequency controller connection ports, which are uniformly switched internally by a microwave switch through frequency sweeping.

[0069] In order to better illustrate the beneficial effects of the present invention, the following simulation experiments were conducted:

[0070] Figure 9 Shown is a schematic diagram of S-parameter simulation results of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing provided by an embodiment of the present invention.

[0071] For example, Figure 9 (a) and (b) are obtained by simulating the S parameters of the high-frequency leaky wave antenna group 1 or the low-frequency leaky wave antenna group 2 in the conformal artificial surface plasmon phased array antenna working in high and low frequency time-sharing.

[0072] See also Figure 9, it can be seen that when high-frequency leaky-wave antenna group 1 is operating, the S11 of the antenna in the range of 2f0-3f0GHz is less than -10dB, and the impedance bandwidth is 43.1%; when low-frequency leaky-wave antenna group 2 is operating, the S11 of the antenna in the range of f0-3f0GHz is less than -10dB, and the impedance bandwidth is 97.6%. This shows that by making high-frequency leaky-wave antenna group 1 and low-frequency leaky-wave antenna group 2 operate in time-sharing periods, the conformal artificial surface plasmon phased array antenna provided by the present invention can achieve multi-band detection capabilities.

[0073] Figure 10 FIG2 shows a schematic diagram of simulation results of the beam pointing angle of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode provided by an embodiment of the present invention.

[0074] For example, Figure 10 (a) and (b) are schematic diagrams of the curves of the beam pointing angles of the high-frequency leaky wave antenna group 1 and the low-frequency leaky wave antenna group 2 changing with the frequency.

[0075] See also Figure 10 As can be seen, when the high-frequency leaky-wave antenna group 1 is operating, it has the ability to scan from 90° backward to 16° backward; when the low-frequency leaky-wave antenna group is operating, it has the ability to scan from 85° backward to 30° forward. In other words, the low-frequency antenna can achieve a wide-angle beam scan of 115°. Therefore, by operating the two antennas in different time periods, it is possible to achieve 180° beam coverage in the frequency sweep direction from f0 to 3f0 GHz.

[0076] Figure 11 FIG2 shows a schematic diagram of simulation results of the radiation efficiency of a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode provided by an embodiment of the present invention.

[0077] For example, Figure 11 (a) and (b) are schematic diagrams of the radiation efficiency of the high-frequency leaky-wave antenna group 1 and the low-frequency leaky-wave antenna group 2, respectively.

[0078] See also Figure 11 As can be seen, the radiation efficiency of both high-frequency leaky-wave antenna group 1 and low-frequency leaky-wave antenna group 2 within the operating frequency band is greater than 90%. By separating the high-frequency leaky-wave antennas and the low-frequency leaky-wave antennas into separate arrays, the present invention significantly improves the radiation efficiency of the antenna array and expands the beam scanning range in the antenna arrangement direction.

[0079] In the description of the present invention, the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or implicitly specify the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, "plurality" means two or more, unless otherwise specifically defined.

[0080] In the description of this specification, the reference terms "one embodiment", "some embodiments", "example", "specific example", or "some examples" mean that the specific features, structures, materials, or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representations of the above terms do not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials, or characteristics described can be combined in any appropriate manner in any one or more embodiments or examples. In addition, those skilled in the art can combine and combine different embodiments or examples described in this specification.

[0081] Although the present invention is described herein in conjunction with various embodiments, in the process of implementing the claimed invention, those skilled in the art can understand and implement other variations of the disclosed embodiments by reviewing the drawings, the disclosure, and the appended claims. In the claims, the word "comprising" does not exclude other components or steps, and "a" or "an" does not exclude multiple situations. A single processor or other unit can implement several functions listed in the claims. Certain measures are recorded in different dependent claims, but this does not mean that these measures cannot be combined to produce good results.

[0082] The above content is a further detailed description of the present invention in conjunction with specific preferred embodiments, and the specific implementation of the present invention cannot be considered to be limited to these descriptions. For those skilled in the art to which the present invention belongs, any modifications made without departing from the concept of the present invention should be deemed to fall within the scope of protection of the present invention.

Claims

1. A conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode, characterized in that: include: Conformal baseplate; a first antenna fixing base and a second antenna fixing base, wherein the first antenna fixing base and the second antenna fixing base are respectively arranged on both sides of the upper surface of the conformal base, and the upper surfaces of the first antenna fixing base and the second antenna fixing base are both provided with a plurality of rows of grooves; A plurality of high-frequency leaky-wave antenna groups, each of which is fixed in a groove on the upper surface of the first antenna fixing substrate by means of an insert, and the high-frequency leaky-wave antenna group includes a row of high-frequency leaky-wave antennas; wherein the high-frequency leaky-wave antennas are artificial surface plasmon antennas operating in a higher frequency band, and the high-frequency leaky-wave antennas in the same group have the same operating state during frequency sweeping; A plurality of columns of low-frequency leaky wave antenna groups are fixed in grooves on the upper surface of the second antenna fixing substrate by means of inserts, and the low-frequency leaky wave antenna group includes a column of low-frequency leaky wave antennas; wherein the low-frequency leaky wave antennas are artificial surface plasmon antennas operating in a lower frequency band, and the low-frequency leaky wave antennas in the same group have the same working state during frequency scanning; the high-frequency leaky wave antennas and the low-frequency leaky wave antennas operate in time periods to achieve multi-band detection.

2. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 1, characterized in that: The high-frequency leaky-wave antenna group includes: a plurality of first high-frequency leaky-wave antennas and a plurality of second high-frequency leaky-wave antennas, wherein the first high-frequency leaky-wave antennas and the second high-frequency leaky-wave antennas are respectively arranged in a row and conformal to the upper surface of the conformal base plate, the first high-frequency leaky-wave antennas and the second high-frequency leaky-wave antennas are slidingly symmetrical, and the bottoms of the first high-frequency leaky-wave antennas and the second high-frequency leaky-wave antennas are connected in series via a metal material identical to that of the antennas; A first dielectric plate, wherein a horizontal slot conforming to the upper surface of the conformal base plate is provided in the middle of the first dielectric plate, and the first high-frequency leaky wave antenna and the second high-frequency leaky wave antenna are fixed on both sides of the horizontal slot by means of horizontal inserts, so that the first dielectric plate above the horizontal slot is stuck between the first high-frequency leaky wave antenna and the second high-frequency leaky wave antenna; the first dielectric plate below the horizontal slot is fixed in the groove on the upper surface of the first antenna fixing base by means of vertical inserts.

3. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 2, characterized in that: The spacing range between two adjacent first high-frequency leaky wave antennas includes 3.0-5.0mm, the spacing range between two adjacent second high-frequency leaky wave antennas includes 3.0-5.0mm, the length range of the dispersion periodic structure formed by the symmetrical first high-frequency leaky wave antenna and the second high-frequency leaky wave antenna includes 4.5-7.5mm, and the working slot depth range includes 2.0-4.0mm.

4. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 2, characterized in that: The low-frequency leaky-wave antenna group includes: a plurality of first low-frequency leaky-wave antennas and a plurality of second low-frequency leaky-wave antennas, wherein the first low-frequency leaky-wave antennas and the second low-frequency leaky-wave antennas are respectively arranged in a row and conformal to the upper surface of the conformal base plate, the first low-frequency leaky-wave antennas and the second low-frequency leaky-wave antennas are slidingly symmetrical, and the first low-frequency leaky-wave antennas and the second low-frequency leaky-wave antennas are connected in series via a metal material identical to the antenna material; A second dielectric plate, wherein a horizontal slot conforming to the upper surface of the conformal base plate is provided in the middle of the second dielectric plate, and the first low-frequency leaky wave antenna and the second low-frequency leaky wave antenna are fixed on both sides of the horizontal slot by means of horizontal inserts, so that the second dielectric plate above the horizontal slot is stuck between the first low-frequency leaky wave antenna and the second low-frequency leaky wave antenna; the second dielectric plate below the horizontal slot is fixed in the groove on the upper surface of the second antenna fixing base by means of vertical inserts.

5. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 4, characterized in that: The spacing between two adjacent first low-frequency leaky-wave antennas and two adjacent second low-frequency leaky-wave antennas ranges from 5.5 to 8.0 mm, the length of the dispersion periodic structure formed by the symmetrical first low-frequency leaky-wave antennas and the second low-frequency leaky-wave antennas ranges from 9.5 to 13.5 mm, and the working slot depth ranges from 1.5 to 2.5 mm.

6. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 4, characterized in that: The gap between the symmetrical first high-frequency leaky-wave antenna and the second high-frequency leaky-wave antenna, or the symmetrical first low-frequency leaky-wave antenna and the second low-frequency leaky-wave antenna, ranges from 0.4 to 1.5 mm.

7. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 4, characterized in that: The conformal base plate comprises: a conformal shell that conforms to a mounting surface of the mounting device; Support side plates, the support side plates being arranged on both sides of the lower surface of the conformal shell, the lower surface of the support side plates and the other two sides of the conformal shell being in the same horizontal plane; A supporting transverse plate is provided on the lower surface of the conformal shell and is connected to the supporting side plates.

8. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 7, characterized in that: The mounting surface is a cylindrical surface with a deflection range of 15-45 mm, and the groove depth of the multiple dispersion periodic structures in the high-frequency leaky wave antenna group or the low-frequency leaky wave antenna group gradually increases from 0 to the working groove depth; The number of dispersive periodic structures with a groove depth equal to the working groove depth ranges from 3 to 8, and the number of dispersive periodic structures with a groove depth between 0 and the working groove depth ranges from 5 to 12.

9. The conformal artificial surface plasmon phased array antenna operating at high and low frequencies in time-sharing mode according to claim 1, characterized in that: The thickness range of the high-frequency leaky wave antenna group or the low-frequency leaky wave antenna group includes 0.4-1.0 mm, and the height range of the high-frequency leaky wave antenna group or the low-frequency leaky wave antenna group includes 7.5-10.5 mm.

10. A detection device based on a conformal artificial surface plasmon phased array antenna operating in high and low frequency time-sharing mode, characterized in that: The detection device includes the conformal artificial surface plasmon phased array antenna and antenna wave control component operating at high and low frequencies in time-sharing mode as described in any one of claims 1 to 9.

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