Microstrip array antenna integrated in vertical direction

Abstract

The invention relates to the technical field of radar antennas, in particular to a microstrip array antenna integrated in the vertical direction, and is suitable for an X-band phased array radar antenna system. An SMA type connector is fixed to the back face of a reflecting plate, and an inner conductor of the SMA type connector penetrates through the reflecting plate, a metal grounding layer, a second-layer prepreg and a series feed network layer to be connected with the upper surface of a metal wire of the series feed network layer. The radius of the metalized via hole is 1 mm-3 mm, and the metalized via hole is 2 mm-5 mm away from the central point of the radiation unit. The antenna array has the advantages of being small in size, light in weight and high in integration degree, and integration of the microstrip array antenna and the strip line series feed network in the vertical direction is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of radar antennas, and in particular to a microstrip array antenna integrated in a vertical direction, which is suitable for an X-band phased array radar antenna system. Background Art

[0002] Microstrip patch antenna arrays are widely used in mobile communications, aircraft, satellites, radars and other scenarios. With the rapid development of radar technology in recent years, the demand for phased array radar antennas is increasing. While meeting the requirements of high gain and low sidelobe, the requirements for miniaturization and integration of antenna arrays are also getting higher and higher.

[0003] At present, the integrated design of microstrip patch array antenna and feeding network generally adopts coplanar form. For parallel-fed coplanar integrated array antenna, as the number of antenna units increases, the total length of the feed line will become longer and longer, increasing the feed loss and reducing the space utilization rate. There are generally two forms of serial-fed coplanar integrated array antenna. One is that the feed line and the microstrip patch are connected in series like a candied haws. In this form, the bandwidth of the array antenna pattern is very narrow and it is difficult to achieve low sidelobe requirements; the other is that the output end of the serial feed network is connected to the microstrip antenna separately. In this form, the array antenna occupies a relatively larger space, which is not conducive to antenna array formation. Summary of the invention

[0004] In view of the deficiencies in the prior art, the present invention provides a microstrip array antenna integrated in the vertical direction, which solves the problems of large size and low space utilization of planar integrated array antennas through reasonable structural design of the microstrip patch array and the feeding network.

[0005] The technical scheme of the present invention is: a microstrip array antenna integrated in a vertical direction, which consists of a radiation patch group, an H-slot gap coupling layer, a first layer of prepreg, a series feed network layer, a second layer of prepreg, a metal grounding layer, a reflector and an SMA type connector. The radiation patch group includes a plurality of radiation patches, which are characterized in that the radiation patch group, the H-slot gap coupling layer, the first layer of prepreg, the series feed network layer, the second layer of prepreg and the metal grounding layer are stacked and arranged in sequence from top to bottom, metallized vias are arranged between the radiation patch group, the H-slot gap coupling layer, the first layer of prepreg, the series feed network layer, the second layer of prepreg and the metal grounding layer, the SMA type connector is fixed on the reverse side of the reflector, and the inner conductor of the SMA type connector passes through the reflector, the metal grounding layer, the second layer of prepreg, the series feed network layer and is connected to the upper surface of the metal wire of the series feed network layer; the radius of the metallized via is 1mm-3mm, and the distance from the center point of the radiation unit is 2mm-5mm.

[0006] According to the microstrip array antenna integrated in the vertical direction as described above, it is characterized by: the radius of the metallized via hole is 1.1mm, the hole spacing is 0.8-1.8mm, the distance from the center point of the radiation unit is 4.065mm, and it is symmetrically arranged along the long side of the radiation patch with the center point of a single radiation patch as the symmetry point.

[0007] According to the microstrip array antenna integrated in the vertical direction as described above, it is characterized in that the radiation patch group, the H-slot gap coupling layer, the first layer of semi-cured sheet, the series feeding network layer, the second layer of semi-cured sheet, and the metal grounding layer are pressed and connected by the semi-cured sheet hot compression process and then fixed on the reflecting plate.

[0008] According to the microstrip array antenna integrated in the vertical direction as described above, it is characterized in that: the radiation patch is a rectangular PTFE ceramic copper-clad plate with a thickness of 0.5mm to 3mm, a length of 5mm to 9mm, a width of 5mm to 9mm, a dielectric constant of 2 to 4, and a total of 96 radiation patches distributed in a rectangular grid with a spacing of 15mm to 29mm along the X direction and a spacing of 15mm to 17mm along the Y direction.

[0009] According to the microstrip array antenna integrated in the vertical direction as described above, it is characterized in that: the H-slot coupling slot patch is a rectangular gold foil, the H-slot coupling slot has a vertical length of 1 to 3.5 mm, a vertical width of 0.1 mm to 1.29 mm, a horizontal length of 1 to 3.5 mm, and a horizontal width of 0.1 mm to 1.29 mm, and contains a total of 96 H-slot coupling slots distributed in a rectangular grid, with a spacing of 15 to 29 mm along the X direction and a spacing of 15 mm to 17 mm along the Y direction.

[0010] According to the vertically integrated microstrip array antenna as described above, it is characterized in that the first layer of semi-cured sheet is a rectangular epoxy resin adhesive sheet with a thickness of 0.05 to 1 mm, a length of 194 mm to 214 mm, a width of 108 mm to 138 mm, and a dielectric constant of 2 to 4.

[0011] According to the microstrip array antenna integrated in the vertical direction as described above, it is characterized in that the series feeding network layer adopts a strip line form, which is a double-layer rectangular PTFE ceramic copper-clad plate with a thickness of 1mm to 3mm, a length of 194mm to 214mm, a width of 108mm to 138mm, and a dielectric constant of 2 to 4. The series feeding network line adopts a symmetrical structure of one-to-two cascades and one-to-six series in a one-to-twelve shape, and is made of copper material; the one-to-two matching line a is 3mm-6mm long and the line width is 0.1-0.4mm; the one-to-six first main line partial matching line b1 is 3mm-6mm long and the line width is 0.1-0.4mm; the second main line partial matching line b2 is 3mm-6mm long and the line width is 0.1-0.4mm; the third main line partial matching line b3 is 3mm-6mm long and the line width is 0.1-0.4mm; the fourth main line partial matching line b4 is 3mm-6mm long and the line width is 0.1-0.4mm; the fifth main line partial matching line b5 is 3mm-6mm long and the line width is 0.1-0.4mm; the sixth main line partial matching line b6 is 3mm-6mm long and the line width is 0.1-0 .4mm; one divided into six, the first branch line partial matching line c1 is 3mm~6mm long and 0.4mm~0.7mm wide; the second branch line partial matching line c2 is 3mm~6mm long and 0.5mm~0.8mm wide; the third branch line partial matching line c3 is 3mm~6mm long and 0.4mm~0.7mm wide; the fourth branch line partial matching line c4 is 3mm~6mm long and 0.5mm~0.7mm wide; the fifth branch line partial matching line c5 is 3mm~6mm long and 0.7mm~0.9mm wide; the sixth branch line partial matching line c6 is 3mm~6mm long and 0.7mm~0.9mm wide, the spacing between each feeding output port is 15mm~29mm, and 8 identical stripline series feeding networks are arranged horizontally along the Y direction, with a spacing of 14mm~16.5mm.

[0012] According to the vertically integrated microstrip array antenna as described above, it is characterized in that the second layer of semi-cured sheet is a rectangular epoxy resin adhesive sheet with a thickness of 0.05 to 1 mm, a length of 194 mm to 214 mm, a width of 108 mm to 138 mm, and a dielectric constant of 2 to 4.

[0013] According to the vertically integrated microstrip array antenna as described above, the feature is that the reflector is a metal plate with a thickness of 0.5 mm to 5 mm, a length of 194 mm to 214 mm, and a width of 108 mm to 138 mm.

[0014] According to the vertically integrated microstrip array antenna as described above, the feature of the microstrip array antenna is that the frequency band used in the microstrip array antenna is the X-band.

[0015] The beneficial effects of the present invention are: a microstrip array antenna integrated in the vertical direction has the characteristics of low profile, small size, light weight, etc. The stripline series feed network and the microstrip array antenna are integrated in the vertical direction. The array antenna elevation plane pattern is a fixed beam, which can meet the low sidelobe requirements; the azimuth plane can also achieve low sidelobes of the azimuth plane pattern through free amplitude and phase weighting, and the beam can achieve ±45° scanning; it verifies that this integrated form of microstrip array antenna is feasible in engineering applications; it solves the problem of large size and low space utilization of the integrated planar feed network and patch array antenna; it reduces the connection of cables and connectors between the feed network and the array antenna, and improves system integration and system reliability; the number of antenna units can be reduced or increased according to actual needs, and the series feed network can be redesigned according to the amplitude distribution requirements, which has the important characteristic of being expandable. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a schematic diagram of the radiation patch layer structure of the antenna of the present invention;

[0017] Figure 2 It is a schematic diagram of the H-shaped slot coupling layer structure of the antenna of the present invention;

[0018] Figure 3 This is a schematic diagram of the structure of the first prepreg layer of the antenna of the present invention;

[0019] Figure 4 It is a schematic diagram of the structure of the series feeding network layer of the antenna of the present invention;

[0020] Figure 5 It is an enlarged detailed schematic diagram of the series feeding network portion of the antenna of the present invention;

[0021] Figure 6 This is a schematic diagram of the structure of the second prepreg layer of the antenna of the present invention;

[0022] Figure 7 It is a schematic diagram of the metal grounding layer structure of the antenna of the present invention;

[0023] Figure 8 It is a schematic diagram of the structure of the SMA type connector and the reflector of the antenna of the present invention;

[0024] Fig. 9 is a side view of the antenna of the present invention;

[0025] Fig.10 It is a partially enlarged schematic diagram of a side view of the antenna of the present invention;

[0026] Fig.11 A physical diagram of the antenna of the present invention;

[0027] Fig.12 is the standing wave test result of the antenna of the present invention;

[0028] Fig.13 The azimuth plane pattern test result of the antenna of the present invention;

[0029] Fig.14 The elevation pattern test result of the antenna of the present invention is shown in FIG. DETAILED DESCRIPTION

[0030] Explanation of the reference numerals: radiation patch group 1, H-slot gap coupling layer 2, first layer of prepreg 3, series feed network layer 4, second layer of prepreg 5, metal grounding layer 6, metallized via 7, reflector 8, SMA type connector 9.

[0031] The present invention is further described below in conjunction with the accompanying drawings and embodiments.

[0032] The present invention discloses a vertically integrated microstrip array antenna, which is applicable to the X-band frequency band. Figures 1 to 10 As shown, the series-fed network and microstrip array antenna of the present invention are composed of a radiation patch group 1, an H-slot gap coupling layer 2, a first prepreg layer 3, a series-fed network layer 4, a second prepreg layer 5, a metal grounding layer 6, a reflector 8 and an SMA type connector 9. The radiation patch group 1 includes a plurality of radiation patches. Figure 1 The radiating patch group 1, the H-slot gap coupling layer 2, the first prepreg layer 3, the series feeding network layer 4, the second prepreg layer 5, and the metal grounding layer 6 are stacked and arranged from top to bottom, and metalized vias 7 are arranged between the radiating patch group 1, the H-slot gap coupling layer 2, the first prepreg layer 3, the series feeding network layer 4, the second prepreg layer 5, and the metal grounding layer 6 to reduce the coupling between the radiating patches, and also reduce the resonance between the output ports of the series feeding network to avoid the distortion of the array antenna pattern. The radiation patch group 1, the H-slot gap coupling layer 2, the first layer of prepreg 3, the series feed network layer 4, the second layer of prepreg 5, and the metal grounding layer 6 are pressed and connected by a prepreg heat compression process, and then the whole is fixed to the reflector 8 by a vacuum reflow soldering process or screws. The SMA connector 9 is fixed to the back side of the reflector 8, and the inner conductor of the SMA connector 9 passes through the reflector 8, the metal grounding layer 6, the second layer of prepreg 5, the series feed network layer 4 and is connected to the upper surface of the metal wire of the series feed network layer 4.

[0033] The radiation patch group 1 of the present invention is a rectangular PTFE ceramic copper-clad plate with a thickness of 0.5mm to 3mm, preferably 1mm; a length of 5mm to 9mm, preferably 8.16mm; a width of 5mm to 9mm, preferably 6.02mm; a dielectric constant of 2 to 4, preferably 3.66; the present invention contains a total of 96 radiation patches, which are distributed in 8 rows and 12 columns in a rectangular shape, with a spacing of 15mm to 29mm along the X direction, preferably 16.76mm, and a spacing of 15 to 17mm along the Y direction, preferably 15.3mm. The front of the radiation patch group 1 is as shown in the attached figure. Figure 1 As shown, the shaded part is the copper clad plate, and the non-shaded part is the medium after the surface of the ceramic copper clad plate is corroded.

[0034] The H-shaped slot coupling layer 2 of the present invention is a rectangular gold foil sheet with a thickness of 0.5 mm to 3 mm, preferably 0.5 mm, a length of 1 to 3.5 mm, preferably 2.18 mm, 2.56 mm, and a width of 0.1 mm to 1.29 mm, preferably 0.29 mm, 0.29 mm. The present invention comprises a total of 96 H-shaped slot coupling slots, which are distributed in a rectangular shape of 8 rows and 12 columns, 15 to 29 mm along the X direction, preferably 16.76 mm, and a spacing of 15 to 16.5 mm along the Y direction, preferably 15.3 mm. The front side of the H-shaped slot coupling layer 2 is as shown in the attached Figure 2 As shown in the figure, the shaded part is copper plating, the non-shaded part is the H-slot coupling slot, and the round hole part is the metallized via position. By adjusting the length and width of the H-slot coupling slot, the impedance matching between the series feed network and the antenna can be adjusted. It is easier to achieve impedance matching between the series feed network and the antenna than the traditional one-slot coupling slot.

[0035] The first prepreg 3 of the present invention is a rectangular epoxy resin adhesive sheet with a thickness of 0.05 to 1 mm, preferably 0.1 mm; a length of 190 mm to 210 mm, preferably 204 mm; a width of 115 mm to 135 mm, preferably 128 mm; and a dielectric constant of 2 to 4, preferably 2.48. Figure 3 shown.

[0036] The series feed network layer 4 of the present invention adopts the stripline form, a double-layer rectangular PTFE ceramic copper-clad plate, a thickness of 0.5mm to 3mm, preferably 0.5mm, a length of 190mm to 210mm, preferably 204mm, a width of 115mm to 135mm, preferably 128mm, and a dielectric constant of 2 to 4, preferably 3. The shaded part is a one-to-twelve stripline series feed network, which is made of copper, the non-shaded part is the medium after the surface of the ceramic copper-clad plate is corroded, and the circular hole part is the metallized via position. The one-to-twelve stripline series feed network is a one-to-two and two one-to-six cascade, symmetrical with the input feed point as the center, and connected to the SMA type connector 9 by welding. The length of the one-to-two part matching line a is 3mm~6mm, preferably 3.5mm, and the line width is 0.1~0.4mm, preferably 0.28mm; the length of the first main line part matching line b1 is 3mm~6mm, preferably 3.675mm, and the line width is 0.1~0.4mm, preferably 1.02mm; the length of the second main line part matching line b2 is 3mm~6mm, preferably 4.25mm, and the line width is 0.1~0.4mm, preferably 0.96mm; the length of the third main line part matching line b3 is The length of the fourth main line partial matching line b4 is 3mm~6mm, preferably 4.25mm, and the line width is 0.1~0.4mm, preferably 0.89mm; the length of the fourth main line partial matching line b4 is 3mm~6mm, preferably 4.25mm, and the line width is 0.1~0.4mm, preferably 1.09mm; the length of the fifth main line partial matching line b5 is 3mm~6mm, preferably 4.25mm, and the line width is 0.1~0.4mm, preferably 1.27mm; the length of the sixth main line partial matching line b6 is 3mm~6mm, preferably 5. 09mm, line width is 0.1~0.4mm, preferably 1.27mm; one branch line part matching line c1 is 3mm~6mm long, preferably 4.23mm, and 0.4mm~0.7mm wide, preferably 0.56mm; the second branch line part matching line c2 is 3mm~6mm long, preferably 4.23mm, and 0.5mm~0.8mm wide, preferably 0.61mm; the third branch line part matching line c3 is 3mm~6mm long, preferably 4.23mm, and 0.4mm wide m~0.7mm, preferably 0.55mm; the fourth branch line partial matching line c4 is 3mm~6mm long, preferably 4.23mm, and 0.5mm~0.7mm wide, preferably 0.6mm; the fifth branch line partial matching line c5 is 3mm~6mm long, preferably 4.23mm, and 0.7mm~0.9mm wide, preferably 0.84mm; the sixth branch line partial matching line c6 is 3mm~6mm long, preferably 4mm, and 0.7mm~0.9mm wide, preferably 0.84mm. The present invention comprises a total of 8 identical stripline series feed networks arranged horizontally along the Y direction, with a spacing of 14mm~16.5mm, preferably 15.3mm. The series feed network layer 4 is as follows Figure 4 As shown, the series feed network 4 is shown in detail in the attached Figure 5 As shown, Figure 5 a is a detailed schematic diagram of the entire series feeding network. Figure 5 b is a locally enlarged schematic diagram of the series feeding network. Figure 4 and Figure 5 In the figure, the shaded part is copper material, and the non-shaded part is the medium after the surface of the ceramic copper-clad board is corroded. The impedance matching is performed by adjusting the line width and line length of the main line and each branch line with the SMA type connector 9, and the amplitude and phase distribution are controlled to achieve low side lobes of the antenna pattern.

[0037] The second prepreg 5 of the present invention is a rectangular epoxy resin adhesive sheet with a thickness of 0.05 to 1 mm, preferably 0.1 mm; a length of 190 mm to 210 mm, preferably 204 mm, a width of 115 mm to 135 mm, preferably 128 mm, a dielectric constant of 2 to 4, preferably 2.48, and a circular hole portion as a metallized via position. The second prepreg 5 is used to connect the double-layer rectangular PTFE ceramic copper-clad plate of the series-fed network layer 4, and the double-layer rectangular PTFE ceramic copper-clad plate of the series-fed network patch is pressed together by a hot compression process to avoid the copper-clad position.

[0038] The metal grounding layer 6 of the present invention is a rectangular PTFE ceramic copper-clad plate, with a length of 190 mm to 210 mm, preferably 204 mm, a width of 115 mm to 135 mm, preferably 128 mm, and the shaded portion is the copper-clad portion.

[0039] The radius of the metallized via hole 7 of the present invention is 1 mm to 3 mm, preferably 1.1 mm, and the distance from the center point of the radiation unit is 2 mm to 5 mm, preferably 4.065 mm. Figure 2 , Figure 3 , Figure 4 , Figure 6 , Figure 7 By adjusting the size of the metallized vias, the spacing between the vias, and the distance between the vias and the center point of the radiation unit, the coupling between the antenna units can be effectively reduced, solving the antenna pattern distortion caused by the coupling between the antennas.

[0040] The reflector 8 of the present invention has a thickness of 0.5 mm to 5 mm, preferably 4 mm according to the medium length of the SMA connector 9, a length of 194 mm to 214 mm, preferably 212 mm, a width of 108 mm to 138 mm, preferably 136 mm, and is made of metal, preferably aluminum plate, and is light in weight.

[0041] The present invention has the characteristics of low profile, small size, light weight, etc., adopts stripline series feeding network for integrated feeding, reduces the original 96 feeding ports of array antenna to 8, reduces the use of SMA type connector 9, and reduces the required cables from 96 to 8. The present invention is shown in the attached Fig.11The measured impedance bandwidth of the array antenna can reach 15.44%, as shown in the attached Fig.12 The antenna pattern side lobe is less than -20dB, and the gain is greater than -21.5dB. The measured results are shown in the attached Fig.13 , Attachment Fig.14 As shown, the antenna system can be applied to X-band two-dimensional phased array radar. At the same time, the antenna units can be increased or decreased according to the actual needs of antenna gain, side lobe, beam width, etc., and the amplitude distribution of the series feed network can be readjusted, which has the important characteristic of being expandable.

Claims

1. A microstrip array antenna integrated in the vertical direction, consisting of a radiation patch group, an H-slot gap coupling layer, a first layer of prepreg, a series feed network layer, a second layer of prepreg, a metal ground layer, a reflector and an SMA type connector, wherein the radiation patch group includes a plurality of radiation patches, characterized in that: The radiation patch group, the H-slot gap coupling layer, the first prepreg, the series feed network layer, the second prepreg, and the metal grounding layer are stacked and arranged in sequence from top to bottom. Metallized vias are arranged between the radiation patch group, the H-slot gap coupling layer, the first prepreg, the series feed network layer, the second prepreg, and the metal grounding layer. The SMA connector is fixed to the reverse side of the reflector. The inner conductor of the SMA connector passes through the reflector, the metal grounding layer, the second prepreg, the series feed network layer, and is connected to the upper surface of the metal wire of the series feed network layer. The radius of the metallized via is 1 mm to 3 mm, and the distance from the center point of the radiation unit is 2 mm to 5 mm.

2. The microstrip array antenna integrated in the vertical direction according to claim 1, characterized in that: The radius of the metallized via hole is 1.1 mm, the hole spacing is 0.8 to 1.8 mm, and the distance from the center point of the radiation unit is 4.065 mm. They are symmetrically arranged along the long side of the radiation patch and with the center point of a single radiation patch as the symmetry point.

3. The microstrip array antenna integrated in the vertical direction according to claim 1, characterized in that: The radiation patch group, the H-slot gap coupling layer, the first prepreg layer, the series feed network layer, the second prepreg layer, and the metal grounding layer are pressed and connected by using a prepreg heat compression process and then fixed on the reflector.

4. A vertically integrated microstrip array antenna according to any one of claims 1 to 3, characterized in that: The radiation patch is a rectangular PTFE ceramic copper-clad plate with a thickness of 0.5mm to 3mm, a length of 5mm to 9mm, a width of 5mm to 9mm, a dielectric constant of 2 to 4, and a total of 96 radiation patches distributed in a rectangular grid with a spacing of 15mm to 29mm along the X direction and a spacing of 15mm to 17mm along the Y direction.

5. A vertically integrated microstrip array antenna according to any one of claims 1 to 3, characterized in that: The H-slot coupling slot patch is a rectangular gold foil sheet, the H-slot coupling slot has a vertical length of 1 to 3.5 mm, a vertical width of 0.1 mm to 1.29 mm, a horizontal length of 1 to 3.5 mm, and a horizontal width of 0.1 mm to 1.29 mm, and contains a total of 96 H-slot coupling slots distributed in a rectangular grid, with a spacing of 15 to 29 mm along the X direction and a spacing of 15 mm to 17 mm along the Y direction.

6. A microstrip array antenna integrated in the vertical direction according to any one of claims 1 to 3, characterized in that: The first layer of prepreg is a rectangular epoxy resin bonding sheet with a thickness of 0.05-1 mm, a length of 194 mm-214 mm, a width of 108 mm-138 mm, and a dielectric constant of 2-4.

7. A vertically integrated microstrip array antenna according to any one of claims 1 to 3, characterized in that: The series feed network layer adopts a stripline form, which is a double-layer rectangular PTFE ceramic copper-clad plate with a thickness of 1mm to 3mm, a length of 194mm to 214mm, a width of 108mm to 138mm, and a dielectric constant of 2 to 4; the series feed network line adopts a symmetrical structure of one-division-two cascade and one-division-six series in a one-division-twelve shape, and is made of copper material; the one-division-two matching line a is 3mm to 6mm long and the line width is 0.1 to 0.4mm; the one-division-six first main line part The length of the sub-matching line b1 is 3mm~6mm, and the line width is 0.1~0.4mm; the length of the second main line partial matching line b2 is 3mm~6mm, and the line width is 0.1~0.4mm; the length of the third main line partial matching line b3 is 3mm~6mm, and the line width is 0.1~0.4mm; the length of the fourth main line partial matching line b4 is 3mm~6mm, and the line width is 0.1~0.4mm; the length of the fifth main line partial matching line b5 is 3mm~6mm, and the line width is 0.1~0.4mm; the sixth main line partial matching line b6 is 3mm~6mm long and 0.1~0.4mm wide; the first branch line partial matching line c1 is 3mm~6mm long and 0.4mm~0.7mm wide; the second branch line partial matching line c2 is 3mm~6mm long and 0.5mm~0.8mm wide; the third branch line partial matching line c3 is 3mm~6mm long and 0.4mm~0.7mm wide; the fourth branch line partial matching line c4 is 3mm~6mm long and 0.5mm~0.7mm wide; the fifth branch line partial matching line c5 is 3mm~6mm long and 0.7mm~0.9mm wide; the sixth branch line partial matching line c6 is 3mm~6mm long and 0.7mm~0.9mm wide, and the spacing between each feed output port is 15mm~29mm, and 8 identical stripline series feeding networks are arranged horizontally along the Y direction, with a spacing of 14mm~16.5mm.

8. A vertically integrated microstrip array antenna according to any one of claims 1 to 3, characterized in that: The second layer of prepreg is a rectangular epoxy resin bonding sheet with a thickness of 0.05-1 mm, a length of 194 mm-214 mm, a width of 108 mm-138 mm, and a dielectric constant of 2-4.

9. A microstrip array antenna integrated in the vertical direction according to any one of claims 1 to 3, characterized in that: The reflecting plate is a metal plate with a thickness of 0.5 mm to 5 mm, a length of 194 mm to 214 mm, and a width of 108 mm to 138 mm.

10. A vertically integrated microstrip array antenna according to any one of claims 1 to 3, characterized in that: Microstrip array antennas are used in the X-band frequency band.

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