Array antenna device and antenna unit thereof

Abstract

An array antenna device and its antenna unit. The array antenna device includes a first shell, a second shell and an antenna module; the first shell and the second shell are connected to each other to form a configuration space; the antenna module is arranged in the configuration space and includes a first antenna unit, a second antenna unit and a feed antenna unit; the first antenna unit includes a first antenna structure and a molded support frame; the first antenna structure includes a first substrate and a plurality of first microstrip antennas, and the first substrate is formed with a plurality of flow channel holes; the molded support frame is a single-piece structure and has a first frame and a second frame, and a plurality of connecting parts. The array antenna device and its antenna unit of the present invention enable the first frame and the second frame to be stably formed on both sides of the first substrate, thereby reducing the number of components required to be assembled in the array antenna device, thereby shortening the production schedule of the array antenna device, and effectively reducing the assembly tolerance of components in the array antenna device.

Description

Technical Field

[0001] The present invention relates to an antenna, and in particular to an array antenna device and an antenna unit thereof. Background Art

[0002] The existing antenna device includes a plurality of antenna units and a plurality of spacers separating the plurality of antenna units; that is, two adjacent antenna units are separated by a spacer. However, the existing antenna device requires at least one spacer to be assembled on each antenna unit, which prolongs the production process, and the assembly between the plurality of antenna units and the plurality of spacers is prone to tolerance accumulation.

[0003] Therefore, the inventors believe that the above defects can be improved, and have devoted themselves to research and applied scientific principles, and finally proposed the present invention which has a reasonable design and effectively improves the above defects. Summary of the invention

[0004] The embodiment of the present invention provides an array antenna device and an antenna unit thereof, which can effectively improve the defects that may occur in the existing antenna device.

[0005] The embodiment of the present invention discloses an array antenna device, which includes a first shell, a second shell and an antenna module; the first shell and the second shell are connected to each other to form a configuration space; the antenna module is arranged in the configuration space, and the antenna module includes a first antenna unit, a second antenna unit and a feed antenna unit; the first antenna unit includes a first antenna structure and a molded support frame; the first antenna structure includes a first substrate and a plurality of first microstrip antennas (patch antennas) formed on the first substrate, and the first substrate is formed with a plurality of through-shaped flow channel holes; the molded support frame is a single-piece structure integrally formed on the first substrate, and the molded support frame has a first frame and a second frame respectively formed on both sides of the first substrate, and a plurality of connection parts formed in the plurality of flow channel holes to connect the first frame and the second frame; wherein the first frame faces the first shell; the second antenna unit includes a second antenna structure and a spacer, and the second antenna structure is located between the second frame and the spacer; the feed antenna unit is located between the second shell and the spacer, and the feed antenna unit can be used to couple to the second antenna structure.

[0006] An embodiment of the present invention also discloses an antenna unit of an array antenna device, which includes an antenna structure and a molded support frame; the antenna structure includes a substrate and a plurality of microstrip antennas formed on the substrate, and the substrate is formed with a plurality of through-shaped flow channels; the molded support frame is a single-piece structure integrally formed on the substrate, and the molded support frame has a first frame and a second frame respectively formed on both sides of the substrate, and a plurality of connection parts formed in the plurality of flow channels to connect the first frame and the second frame.

[0007] An embodiment of the present invention further discloses an array antenna device, which includes a first shell, a second shell and an antenna module; the first shell and the second shell are connected to each other to jointly form a configuration space; the antenna module is arranged in the configuration space, and the antenna module includes a first antenna unit, a second antenna unit and a feed antenna unit; the first antenna unit includes a first antenna structure and a support frame; the first antenna structure includes a first substrate and a plurality of first microstrip antennas formed on the first substrate, and the first substrate is formed with a plurality of through holes in a through shape; the support frame includes a first frame and a second frame respectively arranged on both sides of the first substrate, and a plurality of connecting parts located in the plurality of through holes to connect the first frame and the second frame; wherein the first frame faces the first shell; the second antenna unit includes a second antenna structure and a spacer, and the second antenna structure is located between the second frame and the spacer; the feed antenna unit is located between the second shell and the spacer, and the feed antenna unit can be used to couple to the second antenna structure.

[0008] In summary, the array antenna device and antenna unit thereof disclosed in the embodiments of the present invention form a plurality of through holes (such as flow channels) on a substrate (such as a first substrate) so that a first frame and a second frame can be stably formed on both sides of the substrate (such as a first substrate) through a plurality of connecting portions located in the plurality of through holes (such as flow channels), thereby reducing the number of components required to be assembled in the array antenna device, thereby shortening the production schedule of the array antenna device, and effectively reducing the component assembly tolerance in the array antenna device.

[0009] To further understand the features and technical contents of the present invention, please refer to the following detailed description and drawings of the present invention. However, such description and drawings are only used to illustrate the present invention and are not intended to limit the protection scope of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 It is a three-dimensional schematic diagram of an array antenna device according to Embodiment 1 of the present invention.

[0011] Figure 2 for Figure 1 Schematic diagram of the decomposition.

[0012] Figure 3 for Figure 1 Schematic cross-sectional view of .

[0013] Figure 4 for Figure 2 A three-dimensional cross-sectional schematic diagram of a first antenna unit (or antenna unit).

[0014] Figure 5 for Figure 4 An enlarged schematic diagram of region V.

[0015] Figure 6 Schematic diagram of a top view of a first antenna structure (or antenna structure) according to a first embodiment of the present invention.

[0016] Fig. 7A for Figure 6 Schematic enlargement of region VIIA.

[0017] Figure 7B for Fig. 7A Schematic diagram of the changes.

[0018] Figure 8 for Figure 2 A schematic top view of a first antenna unit (or antenna unit).

[0019] Fig. 9 for Figure 8 Schematic diagram of enlarged area IX.

[0020] Fig.10 for Figure 2 A schematic three-dimensional cross-sectional view of the first antenna unit (or antenna unit) from another perspective.

[0021] Fig.11 for Fig.10 Schematic enlargement of region XI.

[0022] Fig. 12A It is a partial cross-sectional schematic diagram of the first antenna structure and the second antenna structure according to the first embodiment of the present invention.

[0023] Fig. 12B for Fig. 12A Schematic diagram of the decomposition.

[0024] Fig.13 for Fig.10 Schematic enlargement of region XIII.

[0025] Fig.14 It is a schematic diagram of a feeding antenna unit according to a first embodiment of the present invention.

[0026] Fig.15 It is a partial schematic diagram of the first antenna structure of the second embodiment of the present invention.

[0027] Main component symbols:

[0028] 100 Array Antenna Device

[0029] 10 First shell

[0030] 20 Second shell

[0031] 30 Antenna module

[0032] 1 First antenna unit

[0033] 11. First Antenna Structure

[0034] 111 First Substrate

[0035] 1111 Flow channel hole

[0036] 1111a Through hole

[0037] 1112 Piercing

[0038] 112 First Microstrip Antenna

[0039] 12 Molded support frame

[0040] 12a Support frame

[0041] 121 First Frame

[0042] 1211 First separator box

[0043] 122 Second Frame

[0044] 1221 Second separator box

[0045] 123 Connection

[0046] 124 Clamping arm

[0047] 2 Second antenna unit

[0048] 21 Second Antenna Structure

[0049] 211 Second substrate

[0050] 212 Second microstrip antenna

[0051] 22 Spacer

[0052] 3 Feeding antenna unit

[0053] 31 Circuit Board

[0054] 311 Antenna

[0055] 312 Radiation Department

[0056] 32 Feed line

[0057] S Configuration Space

[0058] D1 First direction

[0059] D2 Second direction

[0060] H1 First Height

[0061] H2 Second Height

[0062] D1111 Spacing

[0063] D112 Maximum outer diameter DETAILED DESCRIPTION

[0064] The following is an explanation of the implementation of the "array antenna device and its antenna unit" disclosed in the present invention through specific embodiments. Those skilled in the art can understand the advantages and effects of the present invention from the contents disclosed in this specification. The present invention can be implemented or applied through other different specific embodiments, and the details in this specification can also be modified and changed in various ways based on different viewpoints and applications without departing from the concept of the present invention. In addition, it is stated in advance that the drawings of the present invention are only simple schematic illustrations and are not depicted according to actual sizes. The following implementations will further explain the relevant technical contents of the present invention in detail, but the disclosed contents are not intended to limit the scope of protection of the present invention.

[0065] It should be understood that, although the terms "first", "second", "third", etc. may be used herein to describe various components or signals, these components or signals should not be limited by these terms. These terms are mainly used to distinguish one component from another component, or one signal from another signal. In addition, the term "or" used herein may include any one or more combinations of the associated listed items depending on the actual situation.

[0066] [Example 1]

[0067] See also Figures 1 to 14 As shown, it is the first embodiment of the present invention. Figures 1 to 3 As shown, this embodiment discloses an array antenna device 100, and the array antenna device 100 is described as a satellite antenna device in this embodiment, which is used to transmit signals to a satellite and receive signals from a satellite, but the present invention is not limited thereto. The array antenna device 100 includes a first shell 10, a second shell 20, and an antenna module 30 located between the first shell 10 and the second shell 20.

[0068] The first shell 10 and the second shell 20 are connected to each other to form a configuration space S, and the antenna module 30 is disposed in the configuration space S. The configuration space S is generally closed, and at least one of the first shell 10 and the second shell 20 preferably has a structure for positioning the antenna module 30 in the configuration space S. The specific structures of the first shell 10 and the second shell 20 can be adjusted and changed according to design requirements, and are not limited to this embodiment.

[0069] The antenna module 30 includes a first antenna unit 1, a second antenna unit 2, and a feeding antenna unit 3, and the feeding antenna unit 3, the second antenna unit 2, and the first antenna unit 1 are stacked sequentially on the second shell 20 in this embodiment; that is, the first antenna unit 1 is adjacent to the first shell 10, the feeding antenna unit 3 is arranged on the second shell 20, and the second antenna unit 2 is clamped between the first antenna unit 1 and the feeding antenna unit 3.

[0070] It should be noted that the first antenna unit 1 is described in this embodiment by being matched with the second antenna unit 2, the feed antenna unit 3, the first shell 10, and the second shell 20, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the first antenna unit 1 can be used alone (e.g., sold) or used in combination with other components. The following will first describe the structure of each component of the antenna module 30, and then describe the connection relationship between them when appropriate.

[0071] like Figure 4 and Figure 5 As shown, the first antenna unit 1 includes a first antenna structure 11 and a molded support frame 12 formed on the first antenna structure 11; that is, the first antenna structure 11 and the molded support frame 12 are inseparable structures in this embodiment. Accordingly, any detachable antenna structure and support frame are not the first antenna structure 11 and the molded support frame 12 referred to in this embodiment.

[0072] The first antenna structure 11 includes a first substrate 111 and a plurality of first microstrip antennas (patch antennas) 112 formed on the first substrate 111. In the present embodiment, the first substrate 111 is formed with a plurality of through-shaped flow passage holes 1111, and each flow passage hole 1111 is substantially circular in the present embodiment; the plurality of first microstrip antennas 112 are formed on the upper surface of the first substrate 111 in the present embodiment, and each first microstrip antenna 112 is substantially circular in shape, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the plurality of first microstrip antennas 112 can be formed on the upper surface and / or lower surface of the first substrate 111, and the shapes of the flow passage holes 1111 and the first microstrip antennas 112 can be adjusted and changed according to design requirements.

[0073] In more detail, Figure 6 and Fig. 7AAs shown, a plurality of first microstrip antennas 112 are arranged in a plurality of columns each parallel to a first direction D1, and a plurality of first microstrip antennas 112 are also arranged in a plurality of rows each parallel to a second direction D2, and the first direction D1 is perpendicular to the second direction D2. In this embodiment, any two adjacent columns of first microstrip antennas 112 do not overlap each other in the second direction D2, and any two adjacent rows of first microstrip antennas 112 partially overlap each other in the first direction D1, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, any two adjacent rows of first microstrip antennas 112 may also not overlap each other in the first direction D1.

[0074] Furthermore, in order to make the first antenna structure 11 have better structural strength and to prevent the distribution of the plurality of flow channel holes 1111 from affecting the operation of the plurality of first microstrip antennas 112, the first antenna structure 11 preferably has at least one of the conditions in the next paragraph, but the present invention is not limited thereto.

[0075] like Figure 6 and Fig. 7A As shown, the total area of ​​the plurality of flow channel holes 1111 is not greater than the total area of ​​the plurality of first microstrip antennas 112, and the area of ​​each flow channel hole 1111 is smaller than the area of ​​any one of the first microstrip antennas 112; a portion of the plurality of flow channel holes 1111 is arranged along the first direction D1 with one of the two adjacent columns of first microstrip antennas 112; as shown Fig. 7A As shown, among a row of first microstrip antennas 112 and a plurality of flow passage holes 1111 arranged along a first direction D1, a spacing D1111 ranging from 5 mm to 10 mm is left between any two adjacent flow passage holes 1111, which is preferably not greater than the maximum outer diameter D112 of any first microstrip antenna 112, and two flow passage holes 1111 are provided between two adjacent first microstrip antennas 112 in the first direction D1; Fig. 7A As shown, one of the flow channel holes 1111 is located on a centroid of three first microstrip antennas 112 that belong to two adjacent rows and are arranged in a triangle.

[0076] In addition, although the plurality of flow channel holes 1111 are referred to as Fig. 7A For example, it can be adjusted according to design requirements. Figure 7B As shown, multiple flow channel holes 1111 can be Fig. 7A Based on the distribution of , further increase its number.

[0077] like Figure 4 and Figure 5 As shown, the molded support frame 12 is a one-piece structure integrally formed on the first substrate 111, and the molded support frame 12 has two sides formed on the first substrate 111 (such as: Figure 4A first frame 121 and a second frame 122 are formed on the upper and lower surfaces of the first substrate 111 in the embodiment, and a plurality of connection parts 123 are formed in the plurality of flow channel holes 1111 to connect the first frame 121 and the second frame 122. It should be noted that in order to make the assembly of the antenna module 30 have higher precision, the antenna module 30 in this embodiment excludes other forms of support frames (such as: riveted frames or buckled frames) other than the molded support frame 12.

[0078] The first frame 121 is distributed on the upper surface of the first substrate 111 in a predetermined pattern, the edge of the first substrate 111 is covered by the first frame 121, and the first substrate 111 is roughly located within the space surrounded by the first frame 121, so that the first antenna structure 11 can be protected by the first frame 121 to avoid direct external collision.

[0079] Furthermore, if Figure 8 and Fig. 9 As shown, the first frame 121 includes a plurality of first partition frames 1211 connected to each other, and the plurality of first partition frames 1211 are formed (without gaps) on the upper surface of the first substrate 111 and surround the outer sides of the plurality of first microstrip antennas 112. The number of first microstrip antennas 112 surrounded by each first partition frame 1211 is less than four, and each first partition frame 1211 is connected to at least one connecting portion 123.

[0080] In more detail, each first partition frame 1211 is a regular N-gon, N is a positive integer greater than three, and any two first partition frames 1211 connected to each other share one side (that is, one first partition frame 1211 is connected to at most N first partition frames 1211), and at least half of the corners of each first partition frame 1211 are connected to a connecting portion 123. In this embodiment, N is illustrated as six, and the four corners of each first partition frame 1211 are each connected to a connecting portion 123, and the number of first microstrip antennas 112 surrounded by each first partition frame 1211 is one, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the first partition frame 1211 may also be a structure other than a regular N-gon (such as a circle).

[0081] like Fig.11 As shown, the second frame 122 includes a plurality of second partition frames 1221 connected to each other, and the plurality of second partition frames 1221 are formed (without gaps) on the lower surface of the first substrate 111. In this embodiment, a projection area formed by the orthographic projection of the plurality of second partition frames 1221 toward the first frame 121 overlaps the plurality of first partition frames 1211.

[0082] That is, in this embodiment, the contour of the first frame 121 is substantially equal to the contour of the second frame 122 (e.g., each second partition frame 1221 is connected to at least one connection portion 123), so that the first frame 121 and the second frame 122 can have a better supporting effect in a direction perpendicular to the first substrate 111 to prevent damage to the first antenna structure 11. Furthermore, the plurality of first partition frames 1211 and the second partition frames 1221 can also be stably formed and connected through the plurality of connection portions 123.

[0083] In addition, any first partition frame 1211 has a first height H1 relative to the first substrate 111 (such as the upper surface), and any second partition frame 1221 has a second height H2 relative to the first substrate 111 (such as the lower surface), which is not greater than the first height H1.

[0084] As described above, in this embodiment, the first antenna unit 1 is formed with a plurality of flow holes 1111 on the first substrate 111, so that the first frame 121 and the second frame 122 can be stably formed on both sides of the first substrate 111 through a plurality of connecting portions 123 located in the plurality of flow holes 1111, thereby reducing the number of components that need to be assembled in the array antenna device 100, thereby shortening the production schedule of the array antenna device 100 and effectively reducing the component assembly tolerance in the array antenna device 100.

[0085] like Figure 2 , Figure 3 ,and Fig. 12A As shown, the second antenna unit 2 includes a second antenna structure 21 and a spacer 22 , and the second antenna structure 21 is located between the second frame 122 and the spacer 22 ; that is, the first frame 121 faces the first housing 10 , and the second frame 122 faces the second antenna structure 21 of the second antenna unit 2 .

[0086] The second antenna structure 21 in this embodiment may be similar to the first antenna structure 11; for example, Fig. 12A and Fig. 12B As shown, the second antenna structure 21 includes a second substrate 211 and a plurality of second microstrip antennas 212 formed on the second substrate 211, and the positions of the plurality of second microstrip antennas 212 correspond to the positions of the plurality of first microstrip antennas 112. Accordingly, any second microstrip antenna 212 can be coupled to a corresponding first microstrip antenna 112.

[0087] Furthermore, Figure 3 and Fig. 12AAs shown, the second antenna structure 21 is connected to (e.g., bonded to) the second frame 122, and the spacer 22 is connected to (e.g., bonded to) the second antenna structure 21 (e.g., the second substrate 211) and the feed antenna unit 3, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the spacer 22 can be a single-piece structure integrally formed with the second antenna structure 21, and the second antenna structure 21 can be different from the first antenna structure 11.

[0088] like Figure 2 , Figure 3 ,and Fig.14 As shown, the feeding antenna unit 3 is located between the second shell 20 and the partition plate 22, and the feeding antenna unit 3 can be used to couple to the second antenna structure 21. In this embodiment, the feeding antenna unit 3 includes a circuit board 31 and at least one feeding line 32 connected to the circuit board 31, and the circuit board 31 includes at least one antenna 311 (such as a slot antenna) adjacent to the second antenna structure 21 and at least one radiating portion 312 coupled to the at least one antenna 311, and the at least one antenna 311 can be coupled to the second antenna structure 21 through at least one feeding line 32 (connected to the at least one radiating portion 312), and the second antenna structure 21 can be further coupled to the first antenna structure 11.

[0089] It should be noted that if Fig.10 and Fig.13 As shown, in this embodiment, the first substrate 111 is formed with a plurality of through holes 1112 distributed outside the plurality of first microstrip antennas 112 and distributed along the edge of the first substrate 111, and the molded support frame 12 includes a plurality of buckling arms 124 extending from the first frame 121 and respectively passing through the plurality of through holes 1112, so that the first antenna structure 11 can be assembled with other components through the plurality of through holes 1112 and the plurality of buckling arms 124, but the present invention is not limited thereto. For example, in other embodiments not shown in the present invention, the first substrate 111 may not be formed with a plurality of through holes 1112, and the molded support frame 12 may not be formed with a plurality of buckling arms 124.

[0090] [Example 2]

[0091] See also Fig.15 As shown, this is the second embodiment of the present invention. Since this embodiment is similar to the above-mentioned first embodiment, the similarities between the two embodiments will not be described in detail, and the differences between this embodiment and the above-mentioned first embodiment are roughly described as follows:

[0092] In this embodiment, the flow channel hole 1111 of the first embodiment is renamed as a through hole 1111a, and the molded support frame 12 of the first embodiment is replaced by a support frame 12a. The support frame 12a includes a first frame 121 and a second frame 122 respectively disposed on both sides of the first substrate 111, and a plurality of connecting portions 123 located at the plurality of through holes 1111a to connect the first frame 121 and the second frame 122.

[0093] In more detail, at least one of the first frame 121 and the second frame 122 is light-transmissive, so that the laser can penetrate into the first frame 121 and the second frame 122 located in each through hole 1111a, thereby realizing the connection between the first frame 121 and the second frame 122 in each through hole 1111a. In this embodiment, the connection between the first frame 121 and the second frame 122 in any through hole 1111a is defined as a connection portion 123.

[0094] [Technical Effects of Embodiments of the Invention]

[0095] In summary, the array antenna device and antenna unit thereof disclosed in the embodiments of the present invention form a plurality of through holes (such as flow channel holes) on the first substrate, so that the first frame and the second frame can be stably formed on both sides of the first substrate through a plurality of connecting portions located in the plurality of through holes (such as flow channel holes), thereby reducing the number of components that need to be assembled in the array antenna device, thereby shortening the production schedule of the array antenna device and effectively reducing the component assembly tolerance in the array antenna device.

[0096] The contents disclosed above are only preferred feasible embodiments of the present invention, and are not intended to limit the patent scope of the present invention. Therefore, all equivalent technical changes made using the contents of the present invention description and drawings are included in the scope of the claims of the present invention.

Claims

1. An array antenna device, the array antenna device comprising: A first shell and a second shell, wherein the first shell and the second shell are connected to each other to form a configuration space; as well as An antenna module, the antenna module is arranged in the configuration space, and the antenna module comprises: A first antenna unit, wherein the first antenna unit comprises: a first antenna structure, the first antenna structure comprising a first substrate and a plurality of first microstrip antennas formed on the first substrate, and the first substrate is formed with a plurality of through-flow holes; and a molded support frame, the molded support frame is a one-piece structure integrally formed on the first substrate, and the molded support frame has a first frame body and a second frame body respectively formed on both sides of the first substrate, and a plurality of connecting parts formed in the plurality of flow channel holes to connect the first frame body and the second frame body; wherein the first frame body faces the first shell; a second antenna unit, the second antenna unit comprising a second antenna structure and a spacer, and the second antenna structure is located between the second frame and the spacer; and A feeding antenna unit is located between the second shell and the spacer, and the feeding antenna unit can be used to couple to the second antenna structure.

2. The array antenna device according to claim 1, wherein: The first frame includes a plurality of first partition frames surrounding the outer sides of the plurality of first microstrip antennas, and the number of the first microstrip antennas surrounded by each of the first partition frames is four or less.

3. The array antenna device according to claim 1, wherein: The first frame includes a plurality of first partition frames surrounding the outer sides of the plurality of first microstrip antennas, and the number of the first microstrip antennas surrounded by each of the first partition frames is one.

4. The array antenna device according to claim 3, wherein: Each of the first partition frames is in the form of a regular N-gon, where N is a positive integer greater than three, and at least half of the corners of each of the first partition frames are connected to one of the connecting portions.

5. The array antenna device according to claim 1, wherein: The first frame includes a plurality of first partition frames surrounding the outer sides of the plurality of first microstrip antennas, and each of the first partition frames is connected to at least one of the connecting parts.

6. The array antenna device according to claim 1, wherein: The first frame includes a plurality of first partition frames surrounding the outside of the plurality of first microstrip antennas, and the second frame includes a plurality of second partition frames; wherein the plurality of second partition frames are projected toward the first frame to form a projection area, and the projection area overlaps the plurality of first partition frames.

7. The array antenna device according to claim 6, wherein: Any one of the first partition frames has a first height relative to the first substrate, and any one of the second partition frames has a second height relative to the first substrate, and the second height is not greater than the first height.

8. The array antenna device according to claim 1, wherein: The plurality of first microstrip antennas are arranged in a plurality of rows each parallel to a first direction, and a portion of the plurality of flow channel holes is arranged along the first direction with one of the first microstrip antennas in two adjacent rows.

9. The array antenna device according to claim 8, wherein: The first microstrip antennas are arranged in multiple rows parallel to a second direction perpendicular to the first direction, and one of the flow channel holes is located on a centroid of three first microstrip antennas belonging to two adjacent rows and arranged in a triangle.

10. The array antenna device according to claim 1, wherein: A spacing of 5 mm to 10 mm is left between any two adjacent flow channel holes.

11. The array antenna device according to claim 1, wherein: The total area of ​​the plurality of flow channel holes is not greater than the total area of ​​the plurality of the first microstrip antennas.

12. The array antenna device according to claim 1, wherein: The feed antenna unit includes a circuit board and at least one feed line connected to the circuit board, and the circuit board includes at least one antenna adjacent to the second antenna structure, and at least one of the antennas can be coupled to the second antenna structure through at least one of the feed lines, and the second antenna structure is coupled to the first antenna structure.

13. The array antenna device according to claim 1, wherein: The second antenna structure is connected to the second frame, and the spacer connects the second antenna structure and the feed antenna unit; The second antenna structure includes a second substrate and a plurality of second microstrip antennas formed on the second substrate, and positions of the plurality of second microstrip antennas correspond to positions of the plurality of first microstrip antennas respectively.

14. An antenna unit of an array antenna device, the antenna unit comprising: An antenna structure, the antenna structure comprising a substrate and a plurality of microstrip antennas formed on the substrate, and the substrate is formed with a plurality of through-flow holes; as well as A molded support frame, the molded support frame is a one-piece structure integrally formed on the substrate, and the molded support frame has a first frame and a second frame respectively formed on both sides of the substrate, and a plurality of connection parts formed in the plurality of flow channel holes to connect the first frame and the second frame.

15. The antenna unit of the array antenna device according to claim 14, wherein: The plurality of microstrip antennas are arranged in a plurality of rows each parallel to a first direction, and a portion of the plurality of flow channel holes is arranged along the first direction with the microstrip antennas in one of two adjacent rows of the microstrip antennas.

16. The antenna unit of the array antenna device according to claim 15, wherein: The plurality of microstrip antennas are arranged in a plurality of rows each parallel to a second direction, the second direction being perpendicular to the first direction, and one of the flow channel holes is located on a centroid of three microstrip antennas belonging to two adjacent rows and arranged in a triangle.

17. The antenna unit of the array antenna device according to claim 14, wherein: The first frame includes a plurality of first partition frames surrounding the outer sides of the plurality of microstrip antennas, and each of the first partition frames is a regular N-gon, where N is a positive integer greater than three, and at least half of the corners of each of the first partition frames are connected to one of the connecting portions.

18. The antenna unit of the array antenna device according to claim 17, wherein: The second frame includes a plurality of second partition frames; wherein the plurality of second partition frames are orthographically projected toward the first frame to form a projection area, and the projection area overlaps the plurality of first partition frames.

19. An array antenna device, the array antenna device comprising: A first shell and a second shell, wherein the first shell and the second shell are connected to each other to form a configuration space; as well as An antenna module, the antenna module is arranged in the configuration space, and the antenna module comprises: A first antenna unit, wherein the first antenna unit comprises: a first antenna structure, the first antenna structure comprising a first substrate and a plurality of first microstrip antennas formed on the first substrate, wherein the first substrate is formed with a plurality of through holes in a penetrating shape; and a support frame, the support frame comprising a first frame body and a second frame body respectively disposed on both sides of the first substrate, and a plurality of connecting parts located at the plurality of through holes to connect the first frame body and the second frame body; wherein the first frame body faces the first shell; a second antenna unit, the second antenna unit comprising a second antenna structure and a spacer, and the second antenna structure is located between the second frame and the spacer; and A feeding antenna unit is located between the second shell and the spacer, and the feeding antenna unit can be used to couple to the second antenna structure.

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