Low-loss wide-angle broadband phased array packaging antenna

Abstract

A low-loss wide-angle broadband phased array packaging antenna comprises a radiation layer and a feed layer which are stacked from top to bottom, the radiation layer comprises a metasurface metal patch structure and a first substrate, a plurality of guide channels are formed in the surface of the metasurface metal patch structure, and the metasurface metal patch structure is arranged on the upper surface of the first substrate; the feed layer comprises a second substrate and a feed structure arranged on the second substrate, a floor layer is arranged between the radiation layer and the feed layer, and the floor layer is provided with an excitation gap which can be used for being matched with an antenna polarization mode. The metasurface metal patch structure provided with the plurality of guide channels and the floor layer provided with the excitation gap can broaden the frequency band of the antenna so as to meet the application requirement of covering the broadband, the height of the antenna section plane is reduced, and the antenna installation is simplified.

Description

Technical Field

[0001] The present invention relates to the fields of 5G communication and microwave technology, and particularly to a low-loss wide-angle broadband phased array packaged antenna. Background Art

[0002] In the field of 5G millimeter-wave communication technology, phased array antennas can achieve low loss and high power at relatively high frequencies, and can dynamically adjust the beam direction to meet different radio frequency requirements. This technology is essential for satellite communication and future ground station terminal communication, and has great prospects.

[0003] However, the existing phased array antennas have the problems of narrow working bandwidth and inability to cover more working frequency bands, which makes it difficult for the antennas to achieve impedance matching at different scanning angles, thus reducing the antenna efficiency. At the same time, the internal structure of the existing phased array antennas is relatively complex, resulting in too high a profile height of the antennas, causing heat accumulation during the use of the antennas, especially in high-frequency band applications, where the heat is difficult to dissipate effectively, which may affect the performance and reliability of the antennas, and increase the processing difficulty of the antennas. Summary of the Invention

[0004] Aiming at the deficiencies in the background art, the purpose of the present invention is to provide a low-loss wide-angle broadband phased array packaged antenna.

[0005] To achieve the above purpose, the present invention provides the following technical solutions:

[0006] A low-loss wide-angle broadband phased array packaged antenna, comprising a radiation layer and a feeding layer stacked from top to bottom. It is characterized in that the radiation layer includes a metasurface metal patch structure and a first substrate, the metasurface metal patch structure is arranged on the upper surface of the first substrate, the feeding layer includes a second substrate and a feeding structure arranged on the second substrate, a floor layer is arranged between the radiation layer and the feeding layer, and an excitation slot for matching the polarization mode of the antenna is arranged on the floor layer.

[0007] Further, the metasurface metal patch structure includes a plurality of metasurface metal patch units. A first guiding position is opened on the metasurface metal patch unit located at the center of the metasurface metal patch structure, a second guiding position and a third guiding position are opened on the metasurface metal patch units located around the metasurface metal patch structure, and the first guiding position, the second guiding position and the third guiding position are symmetrically distributed along the center line on the metasurface metal patch structure.

[0008] Further, the first guiding position, the second guiding position and the third guiding position are of different sizes, and a connecting groove connecting the first guiding position and the second guiding position in the same direction is arranged on the metasurface metal patch structure.

[0009] Further, the communication groove includes a first communication groove and a second communication groove intersecting the first communication groove, and the direction in which the communication groove is disposed on the first substrate corresponds to the direction in which the excitation slit is disposed on the floor layer.

[0010] Further, the excitation slit includes first excitation slits intersecting each other. Second excitation slits are provided at both ends of the first excitation slits, and a third excitation slit is provided at the intersection of the two first excitation slits. The intersection angle of the two first excitation slits is 90 degrees, and the second excitation slit and the third excitation slit are circular slit structures.

[0011] Further, release holes are formed around the floor layer.

[0012] Further, a first adhesive film layer is further included. The first adhesive film layer is disposed between the floor layer and the feeding layer. Connection holes adapted to the release holes are provided around the first adhesive film layer, and a hollow structure is provided at the center of the first adhesive film layer.

[0013] Further, a second adhesive film layer is disposed above the metasurface metal patch structure.

[0014] Further, the feeding structure includes a first feeder and a second feeder. The first feeder passes through the second substrate through a signal transmission member, and the second feeder is disposed on the lower surface of the second substrate.

[0015] Further, the first substrate and the second substrate are glass substrates.

[0016] The beneficial effects of the present invention are as follows:

[0017] 1. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. The radiation layer includes a metasurface metal patch structure, and the metasurface metal patch structure can bring a stable and full radiation pattern and good bandwidth to the antenna. By providing a plurality of first guiding positions, second guiding positions and third guiding positions with different sizes on the metasurface metal patch, the surface structure of the metasurface metal patch structure 101 can be further subdivided. The subdivided patch structure is not only easy to process and not easy to fall off, but also can excite more current paths, thus broadening the working bandwidth of the working mode of the antenna.

[0018] 2. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. The first guiding position, the second guiding position and the third guiding position are symmetrically distributed along the center line of the metasurface metal patch structure, so that the antenna can achieve dual linear polarization and dual circular polarization.

[0019] 3. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. A communication groove connecting a first guiding position and a second guiding position in the same direction is provided on the metasurface metal patch structure. The optimizable current distribution and path can reduce energy loss and improve the radiation efficiency of the antenna.

[0020] 4. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. A floor layer is provided between the radiation layer and the feeding layer. An excitation slot for matching the polarization mode of the antenna is provided on the floor layer. The excitation slot includes a first excitation slot intersecting with each other and a second excitation slot and a third excitation slot having a circular slot structure. The passive bandwidth working mode of the antenna can be optimized. The relative bandwidth of the antenna in the passive state is extended from 24.4% to 29.1%, which is convenient for the subsequent design of active usage scenarios.

[0021] 5. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. The communication groove includes a first communication groove and a second communication groove intersecting the first communication groove. The direction in which the communication groove is provided on the first substrate corresponds to the direction in which the excitation slot is provided on the floor layer, which can optimize the coupling path of electromagnetic waves, make the signal more efficient during transmission, reduce energy loss, and improve the radiation efficiency of the antenna.

[0022] 6. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. Release holes are provided around the floor layer. The release holes can effectively release the mechanical stress generated during the packaging process, avoid structural deformation or damage caused by stress concentration, thereby improving the reliability and stability of the antenna; and by reasonably designing the position and number of the release holes, the reflection and interference of the floor layer on the radio frequency signal can be reduced, and the radiation efficiency and directivity of the antenna can be improved.

[0023] 7. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. It further includes a glue film layer. The glue film layer is provided between the floor layer and the feeding layer. A hollow structure is provided at the center of the glue film layer, which reduces both the complexity of the processing technology and the signal attenuation and loss of the antenna.

[0024] 8. A low-loss wide-angle broadband phased array packaged antenna proposed by the present invention. The feeding structure includes a first feeder and a second feeder. The first feeder passes through the second substrate through a signal transmission member. The use of the signal transmission member can enable the stable transmission of signals between different planes, reduce signal distortion and interference, and improve the stability and reliability of the antenna. Description of the Drawings

[0025] To more clearly illustrate the technical solutions in the embodiments of the invention or the prior art, the following will briefly introduce the drawings required for the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments of the invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0026] Figure 1 Exploded view of the overall antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention;

[0027] Figure 2 Top view of the radiation layer of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention;

[0028] Figure 3 Top view of the floor layer of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention;

[0029] Figure 4 Top view of the adhesive film layer and the first feeder of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention;

[0030] Figure 5 Top view of the feeding layer of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention;

[0031] Figure 6 Schematic diagram of the antenna array of a low-loss wide-angle broadband phased array packaged antenna of the present invention;

[0032] Figure 7 Schematic diagram of the feeding structure of the antenna array of a low-loss wide-angle broadband phased array packaged antenna of the present invention;

[0033] Figure 8 Passive reflection coefficient of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention before opening the second excitation slot and the third excitation slot;

[0034] Figure 9 Passive reflection coefficient of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention after opening the second excitation slot and the third excitation slot;

[0035] Figure 10 45-degree polarization active reflection coefficient of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention in the active usage scenario;

[0036] Figure 11 -45-degree polarization active reflection coefficient of the antenna unit of a low-loss wide-angle broadband phased array packaged antenna of the present invention in the active usage scenario;

[0037] Figure 12 The scanning effect of the antenna array of a low-loss wide-angle broadband phased array packaged antenna of the present invention in the 5G millimeter wave band of 24.25 GHz;

[0038] Figure 13 The scanning effect of the antenna array of a low-loss wide-angle broadband phased array packaged antenna of the present invention in the 5G millimeter wave band of 27.5 GHz;

[0039] Figure 14 The scanning effect of the antenna array of a low-loss wide-angle broadband phased array packaged antenna of the present invention in the 5G millimeter wave band of 29.5 GHz.

[0040] In the figure, 10 is the radiation layer; 101 is the metasurface metal patch structure; 1011 is the first guiding bit; 1012 is the second guiding bit; 1013 is the third guiding bit; 1014 is the connecting groove; 10141 is the first connecting groove; 10142 is the second connecting groove; 201 is the first substrate; 202 is the second substrate; 30 is the feeding layer; 301 is the first feeder; 302 is the second feeder; 303 is the signal transmission member; 40 is the ground layer; 401 is the first excitation slit; 402 is the second excitation slit; 403 is the third excitation slit; 404 is the release hole; 50 is the first adhesive film layer; 501 is the connecting hole; 502 is the hollow structure; 100 is the antenna unit; 200 is the antenna array. Detailed implementation manners

[0041] The following combines Figures 1-14 to describe the present invention in detail.

[0042] A low-loss wide-angle broadband phased array packaged antenna includes a radiation layer 10 and a feeding layer 30 stacked from top to bottom. The radiation layer 10 includes a metasurface metal patch structure 101 with a plurality of guiding channels formed on its surface and a first substrate 201. The metasurface metal patch structure 101 is disposed on the upper surface of the first substrate 201. The metasurface metal patch structure 101 can bring a stable and full radiation pattern and good bandwidth to the antenna. Forming a plurality of guiding channels on the metasurface metal patch structure 101 adds more current paths to the metasurface metal patch structure 101 and broadens the working bandwidth for the working mode of the antenna. The feeding layer 30 includes a second substrate 202 and a feeding structure disposed on the second substrate 202. A ground layer 40 is provided between the radiation layer 10 and the feeding layer 30, and excitation slits for matching the polarization mode of the antenna are provided on the ground layer 40.

[0043] In this embodiment, the selected phased array packaged antenna is a dual-polarized antenna.

[0044] In this embodiment, the metasurface metal patch structure 101 includes a number of metasurface metal patch units. A first guiding position 1011 is formed on the metasurface metal patch unit located at the center of the metasurface metal patch structure 101, and a second guiding position 1012 and a third guiding position 1013 are formed on the metasurface metal patch units located around the metasurface metal patch structure 101. The first guiding position 1011, the second guiding position 1012, and the third guiding position 1013 with different sizes can further subdivide the surface structure of the metasurface metal patch structure. The subdivided patch structure is not only easy to process and not prone to falling off, but also can stimulate more current paths to broaden the working bandwidth for the working mode of the antenna.

[0045] Specifically, the first guiding position 1011, the second guiding position 1012, and the third guiding position 1013 are rectangular channels. This design can precisely control the propagation path and phase distribution of electromagnetic waves, thereby improving the beam directivity of the antenna and enhancing the stability and accuracy of the radiation pattern. Moreover, the settings of the first guiding position 1011, the second guiding position 1012, and the third guiding position 1013 make the metasurface metal patch units not prone to warping and falling off, which may affect the antenna performance.

[0046] Furthermore, the first guiding position 1011, the second guiding position 1012, and the third guiding position 1013 are symmetrically distributed along the center line on the metasurface metal patch structure 101, enabling the antenna to achieve dual linear polarization and dual circular polarization. And a connecting groove 1014 is provided on the metasurface metal patch structure 101 to connect the first guiding position 1011 and the second guiding position 1012 in the same direction. The optimized current distribution and path in the connecting groove 1014 can reduce energy loss and improve the radiation efficiency of the antenna.

[0047] In this embodiment, the connecting groove 1014 includes a first connecting groove 10141 and a second connecting groove 10142 intersecting with the first connecting groove 10141. The direction of the connecting groove 1014 provided on the first substrate 201 corresponds to the direction of the excitation slot provided on the floor layer 40, which can optimize the coupling path of electromagnetic waves, make the signal more efficient during transmission, and reduce energy loss and improve the radiation efficiency of the antenna.

[0048] Preferably, the first connecting groove 10141 is vertically arranged, the second connecting groove 10142 is horizontally arranged, and the intersection angle between the first connecting groove 10141 and the second connecting groove 10142 is 90 degrees.

[0049] In this embodiment, the metasurface metal patch structure 101 is composed of a number of metasurface metal patch units. The side length of the metasurface metal patch unit is denoted as wp, and the length of wp is set to 1 mm. The gap between the metasurface metal patch units is denoted as gx, and the length of gx is 0.05 mm. The aperture size of the first guiding bit 1011 is denoted as wh1, and the length of wh1 is 0.6 mm. The aperture size of the second guiding bit 1012 is denoted as wh2, and the length of wh2 is 0.3 mm. The aperture size of the third guiding bit 1013 is denoted as wh3, and the length of wh3 is 0.15 mm. The widths of the first connecting slot 10141 and the second connecting slot 10142 are denoted as s, and the length of s is 0.1 mm.

[0050] Preferably, the metasurface metal patch unit is made of copper material.

[0051] In this embodiment, the excitation slot includes a first excitation slot 401 that intersects with each other. Second excitation slots 402 are provided at both ends of the first excitation slot 401, and a third excitation slot 403 is provided at the intersection of the two first excitation slots 401. Further, the intersection angle of the two first excitation slots 401 is 90 degrees, and the second excitation slot 402 and the third excitation slot 403 are circular slot structures.

[0052] Specifically, the direction in which the connecting slot 1014 is provided on the first substrate 201 corresponds to the direction in which the excitation slot is provided on the floor layer 40, wherein the intersecting first connecting slot 10141 and second connecting slot 10142 correspond to the intersecting first excitation slot 401.

[0053] Preferably, the direction in which the first connecting slot 10141 and the second connecting slot 10142 are provided on the first substrate 201 and the direction in which the excitation slot is provided on the floor layer 40 are rotated 45 degrees relative to the reference direction. This can reduce the mutual interference of the surface electric fields of the antenna unit 100, and can also meet the wide beam requirements of the unit pattern for 0° and 90° scans.

[0054] Specifically, further, the antenna unit 100 is dual-polarized through the excitation slot opened on the floor layer 40. The length of the first excitation slot 401 is denoted as L, and the length of L is 2.3 mm. The width of the first excitation slot 401 is denoted as S, and the length of S is 2.5 mm. The aperture size of the second excitation slot 402 is smaller than the aperture size of the third excitation slot 403. Denote the aperture radius of the second excitation slot 402 as r1, and r1 is 0.1 mm; denote the aperture radius of the third excitation slot 403 as R1, and R1 is 0.25 mm. The mutual cooperation among the first excitation slot 401, the second excitation slot 402 and the third slot enables the antenna unit 100 provided in this embodiment to achieve a broadband radiation effect without parasitic patches, reducing the profile height of the antenna unit 100 and simplifying the processing difficulty.

[0055] Specifically, a first excitation slot 401, second excitation slots 402 of different sizes, and third excitation slots 403 are provided on the floor layer 40 to optimize the passive bandwidth operating mode of the antenna unit 100. After optimization, the relative bandwidth in the passive usage scenario of the antenna unit 100 is extended from 24.4% to 29.1%, facilitating the subsequent active usage scenario design.

[0056] In this embodiment, release holes 404 are provided around the floor layer 40. The release holes 404 can effectively release the mechanical stress generated during the encapsulation process, avoid structural deformation or damage caused by stress concentration, thereby improving the reliability and stability of the antenna; and by reasonably designing the position and number of the release holes 404, the reflection and interference of the floor layer 40 on the radio frequency signal can be reduced, improving the radiation efficiency and directivity of the antenna.

[0057] Specifically, the aperture size of the release hole 404 is denoted as r2, r2 is 0.1 mm, and the distance between the release holes 404 arranged in the same direction around the floor layer 40 is 0.25 mm. Such a setting of the aperture size and arrangement of the release holes 404 can simultaneously meet the requirements of releasing the mechanical stress during the encapsulation of the antenna unit 100 and facilitating production and processing.

[0058] Preferably, the floor layer 40 is made of copper material.

[0059] In this embodiment, the encapsulated antenna further includes a first adhesive film layer 50. The first adhesive film layer 50 is provided between the floor layer 40 and the feeding structure. Connection holes 501 adapted to the release holes 404 are provided around the first adhesive film layer 50. Through the mutual adaptation of the connection holes 501 and the release holes 404, the first adhesive film layer 50 can be connected to the first substrate 201. A hollow structure 502 is provided at the center of the first adhesive film layer 50. The hollow structure 502 can reduce the loss of the antenna unit 100. Further, the first adhesive film layer 50 is a BL301 adhesive film structure. During processing, the BL301 adhesive film structure penetrates into the release holes 404 provided on the floor layer 40, and can perform dry film bonding on the first substrate 201, the second substrate 202, and the floor layer 40, which simplifies the processing steps and also reduces the attenuation of the antenna.

[0060] Specifically, the hollow structure 502 on the first adhesive film layer 50 is a square with a side length of 3.5 mm.

[0061] In this embodiment, a second adhesive film layer (not shown in the figure) is provided above the metasurface metal patch structure 101. While preventing the metasurface metal patch structure 101 from warping, it can also function as a wide-angle impedance matching layer for the antenna unit 100, that is, matching the active impedance fluctuations that occur during wide-angle scanning of the antenna, so as to further optimize the performance of the antenna in the active usage scenario.

[0062] In this embodiment, the feeding structure includes a first feeder 301 and a second feeder 302. The first feeder 301 passes through the second substrate 202 via a signal transmission member 303, and the second feeder 302 is disposed on the surface of the second substrate 202. Specifically, the upper part of the first feeder 301 is disposed on the upper surface of the second substrate 202, and the lower part is disposed on the lower surface of the second substrate 202. Moreover, the upper part and the lower part of the first feeder 301 receive energy and radio frequency signals through the signal transmission member 303. The use of the signal transmission member enables the stable transmission of signals between different planes, reduces signal distortion and interference, and improves the stability and reliability of the antenna. Taking the right side of the antenna unit 100 as the positive direction, the first feeder 301 is a -45-degree polarization feeder with a length of 2.9 mm and a width of 0.04 mm. The second feeder 302 is a 45-degree polarization feeder with a length of 3.9 mm and a width of 0.23 mm.

[0063] Preferably, the signal transmission member 303 is a metal column with a diameter of 0.05 mm.

[0064] The transmission path principle of energy and radio frequency signals when the antenna unit 100 is polarized is as follows:

[0065] When the antenna unit 100 is polarized at -45 degrees, energy and radio frequency signals are transmitted from the lower part of the first feeder 301 to the upper part of the first feeder 301 through the metal column; when the antenna unit 100 is polarized at 45 degrees, energy and radio frequency signals directly enter the second feeder 302.

[0066] In this embodiment, the first feeder 301 and the second feeder 302 are disposed on the second substrate 202 by means of micro-pattern bonding.

[0067] In this embodiment, the first substrate 201 and the second substrate 202 are glass substrates, and the glass substrates are made of fused quartz materials, which have excellent dielectric losses and low costs.

[0068] Specifically, the first substrate 201 is a fused quartz wafer with a thickness of 0.7 mm and a side length of 4.8 mm; the second substrate 202 is a fused quartz wafer with a thickness of 0.2 mm and a side length of 4.8 mm.

[0069] In this embodiment, the assembly principle of the phased array packaged antenna is as follows: First, the packaging structure, radiation structure, feeding structure, floor layer 40 and film layer of the antenna unit 100 are processed. Then, the radiation structure is bonded to the first substrate 201 by surface micro-patterns, the floor layer 40 is also bonded to the metasurface metal patch structure 101 by surface micro-patterns, and the feeding structure is also bonded to the second substrate 202. Then, the first substrate 201 and the second substrate 202 are adhered through the film layer, thus completing the assembly of the phased array packaged antenna unit 100.

[0070] The usage principle of the phased array packaged antenna unit 100 is as follows:

[0071] When the antenna unit 100 is used in a passive scenario: First, connectors are connected to both ends of the antenna unit 100, and the outer conductor of the connector is grounded while the inner conductor is connected to the feeding network, and the signal input end of the antenna unit 100 is provided in the feeding network. Then, the radio frequency circuit extracts the amplitude signal and the phase signal from the output end of the connector and then connects them to the dual-polarization port through the redistribution layer, thereby transmitting the power and phase information to the antenna unit 100.

[0072] When the antenna unit 100 is used in an active scenario: Compared with the passive usage scenario, in the active usage scenario of the antenna unit 100, there is no need to use connectors and an external feeding network. Only the radio frequency circuit extracts the amplitude signal and the phase signal from the chip output end and then connects them to the dual-polarization port through the redistribution layer, thereby transmitting the power and phase information to the antenna unit 100.

[0073] The method for the phased array packaged antenna unit 100 to achieve phased array operation is: adding a phase difference to each port of the antenna unit 100, and thus realizing the phase-controlled beam scanning on a 90-degree plane.

[0074] In this embodiment, the phased array packaged antenna unit 100 can be packaged with radio frequency components in a single wafer, and the bottom of the wafer is connected to the chip circuit and the antenna unit 100. The antenna unit 100 can form an 8*8 or 4*4 antenna array 200. As Figure 6 shown, it is a 4*4 array of the antenna unit 100. During the array process, the structure of each antenna unit 100 remains unchanged. Only the antenna unit 100 is periodically extended, and the direction of the array beam is regulated by applying different phase differences to different ports.

[0075] The antenna array 200 is packaged on a 6-inch wafer. The chip and the radio frequency circuit in the wafer are bonded through BGA ball grid. The traces of the chip and the radio frequency circuit are processed on the second substrate 202. At this time, the energy and phase of the antenna array 200 can be directly emitted 1-to-1, or 1-to-8, or 1-to-4 from the direct chip.

[0076] The working method for implementing a phased array for the antenna array 200 is as follows: During array scanning, the same phase difference is added to each adjacent port, and equal-amplitude feeding is applied; when the phase differences of adjacent ports are different, the scanning angle of the antenna element 100 array structure will change. By this method, the antenna array 200 can achieve ±60° dual-polarization wide-angle scanning within the 5G millimeter-wave frequency band of 24.25 GHz - 29.5 GHz.

[0077] As Figure 8 and Figure 9 shown, the second excitation slot 402 and the third excitation slot 403 further optimize the passive matching bandwidth of the antenna element 100. The relative bandwidth of the antenna element 100 in the passive state is extended from 24.4% to 29.1%, facilitating the subsequent design of active usage scenarios.

[0078] As Figure 10 and Figure 11 shown, the periodic boundary is set to simulate the active performance of the antenna element 100, especially the active reflection coefficient in the case of high-angle scanning, further deepening the optimization of the element for matching. Finally, the active reflection coefficient of dual polarization can be controlled below -10 dB over the full angle and the full frequency band.

[0079] As Figures 12 to 14 shown, the antenna array 200 can achieve a scanning effect of ±60° within the operating frequency band of 24.25 GHz - 29.5 GHz, and the gain attenuation can be controlled within 3 dB.

[0080] The above embodiments are only used to illustrate the technical concept and features of the present invention, and their purpose is to enable those skilled in the art to understand the content of the present invention and implement it, and cannot be used to limit the protection scope of the present invention. Any equivalent changes or modifications made according to the spirit and essence of the present invention should be covered within the protection scope of the present invention.

Claims

1. A low-loss wide-angle broadband phased array packaged antenna, comprising a radiation layer and a feeding layer stacked from top to bottom, characterized in that, The radiation layer includes a metasurface metal patch structure and a first substrate. The metasurface metal patch structure is disposed on the upper surface of the first substrate. The feeding layer includes a second substrate and a feeding structure disposed on the second substrate. A ground layer is provided between the radiation layer and the feeding layer, and an excitation slot for matching the antenna polarization mode is provided on the ground layer.

2. The low-loss wide-angle broadband phased array packaged antenna according to claim 1, characterized in that, The metasurface metal patch structure includes a plurality of metasurface metal patch units. A first guiding position is formed on the metasurface metal patch unit located at the center of the metasurface metal patch structure. A second guiding position and a third guiding position are formed on the metasurface metal patch units located around the metasurface metal patch structure. The first guiding position, the second guiding position, and the third guiding position are symmetrically distributed along the center line on the metasurface metal patch structure.

3. The low-loss wide-angle broadband phased array packaged antenna according to claim 2, wherein The first guiding position, the second guiding position, and the third guiding position are different in size, and a connecting groove connecting the first guiding position and the second guiding position in the same direction is provided on the metasurface metal patch structure.

4. The low-loss wide-angle broadband phased array packaged antenna according to claim 3, wherein The connecting groove includes a first connecting groove and a second connecting groove intersecting the first connecting groove. The direction in which the connecting groove is disposed on the first substrate corresponds to the direction in which the excitation slot is disposed on the ground layer.

5. The low-loss wide-angle broadband phased array packaged antenna according to claim 1, characterized in that, The excitation slot includes first excitation slots intersecting each other. Second excitation slots are provided at both ends of the first excitation slots, and a third excitation slot is provided at the intersection of the two first excitation slots. The intersection angle of the two first excitation slots is 90 degrees. The second excitation slot and the third excitation slot are circular slot structures.

6. The low-loss wide-angle broadband phased array packaged antenna according to claim 5, wherein Release holes are formed around the ground layer.

7. The low-loss wide-angle broadband phased array packaged antenna according to claim 6, wherein It further includes a first adhesive film layer. The first adhesive film layer is disposed between the ground layer and the feeding layer. Connection holes adapted to the release holes are provided around the first adhesive film layer, and a hollow structure is provided at the center of the first adhesive film layer.

8. A low-loss wide-angle broadband phased array packaged antenna according to claim 1, characterized in that, A second adhesive film layer is provided above the metasurface metal patch structure.

9. The low-loss wide-angle broadband phased array packaged antenna according to claim 1, wherein The feeding structure includes a first feeder and a second feeder. The first feeder passes through the second substrate through a signal transmission member, and the second feeder is disposed on the lower surface of the second substrate.

10. A low-loss wide-angle broadband phased array packaged antenna according to claim 1, characterized in that, The first substrate and the second substrate are glass substrates.

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