CN114006172B - Dual-polarized single pulse antenna based on substrate integrated waveguide and strip line feed - Google Patents
Dual-polarized single pulse antenna based on substrate integrated waveguide and strip line feed Download PDFInfo
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- CN114006172B CN114006172B CN202111214139.2A CN202111214139A CN114006172B CN 114006172 B CN114006172 B CN 114006172B CN 202111214139 A CN202111214139 A CN 202111214139A CN 114006172 B CN114006172 B CN 114006172B
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/0414—Substantially flat resonant element parallel to ground plane, e.g. patch antenna in a stacked or folded configuration
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
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- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/002—Protection against seismic waves, thermal radiation or other disturbances, e.g. nuclear explosion; Arrangements for improving the power handling capability of an antenna
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q15/00—Devices for reflection, refraction, diffraction or polarisation of waves radiated from an antenna, e.g. quasi-optical devices
- H01Q15/24—Polarising devices; Polarisation filters
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/02—Antennas or antenna systems providing at least two radiating patterns providing sum and difference patterns
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q25/00—Antennas or antenna systems providing at least two radiating patterns
- H01Q25/04—Multimode antennas
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q9/00—Electrically-short antennas having dimensions not more than twice the operating wavelength and consisting of conductive active radiating elements
- H01Q9/04—Resonant antennas
- H01Q9/0407—Substantially flat resonant element parallel to ground plane, e.g. patch antenna
- H01Q9/045—Substantially flat resonant element parallel to ground plane, e.g. patch antenna with particular feeding means
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Abstract
The invention discloses a dual-polarized monopulse antenna based on substrate integrated waveguide and strip line feed, which sequentially comprises a square patch layer, a first substrate integrated waveguide cavity layer shaped like a Chinese character 'tian', a first cross gap layer, a second substrate integrated waveguide cavity layer shaped like a Chinese character 'tian', a second cross gap layer, a substrate integrated waveguide comparator layer, a vertical gap layer, a strip line layer and a metal bottom plate from top to bottom, wherein the substrate integrated waveguide comparator layer carries out vertical polarization feed; the vertical slit layer is excited by the strip line layer to generate a horizontally polarized electromagnetic field which is coupled to the square patch through the second and first cross slits respectively and radiated to a free space by the square patch to form a horizontally polarized beam. The invention has simple structure, high gain and deeper zero depth, and realizes the dual polarization of the single-pulse antenna.
Description
Technical Field
The invention belongs to the technical field of antennas, and particularly relates to a dual-polarized single pulse antenna based on substrate integrated waveguide and strip line feed, which can be applied to tracking, communication and other purposes of a K-band microwave radar.
Background
The monopulse antenna is a kind of precision tracking radar which is rapidly developed in about 50 years of 20 th century. When a target is positioned on an antenna axis, the amplitude and the phase of each wave beam echo signal are equal, and the signal difference is zero; when the target is not on the antenna axis, the amplitude and phase of each wave beam echo signal are unequal, signal difference is generated, the antenna is driven to rotate to the target until the antenna axis is aligned with the target, so that the elevation angle and the azimuth angle of the target can be measured, the distance of the target can be measured from the sum of the signals received by each wave beam, and the target can be measured and tracked.
In conventional monopulse radar systems, such as cassegrain parabolic antennas and lens antennas, the corresponding monopulse comparator is often very complex and bulky, not only expensive to manufacture, but also disadvantageous to manufacture. In recent years, planar structures such as substrate integrated waveguides, microstrip lines and strip lines are widely applied to the development of single pulse antennas due to the advantages of low loss, low cost, simple manufacturing and the like. The substrate integrated waveguide is a structure with the property similar to a waveguide, and the implementation mode is that a metalized through hole is loaded on a dielectric substrate of which the upper surface and the lower surface are both printed with metal layers, and the metalized through hole is utilized to realize the constraint function on electromagnetic waves and can be equivalent to a side wall in a waveguide structure, so that the substrate integrated waveguide can be equivalent to a traditional metal waveguide filled with a medium.
In previous studies, researchers have proposed a variety of planar monopulse antenna arrays with excellent performance such as low profile, high radiation efficiency and high zero depth. But most designs only consider a single polarization mode, and few dual polarization single pulse antennas with excellent performance can be effectively realized.
Disclosure of Invention
The invention aims to: the invention aims to provide a novel dual-polarized single pulse antenna based on substrate integrated waveguide and strip line feed.
The technical scheme is as follows: the invention relates to a dual-polarized monopulse antenna based on substrate integrated waveguide and strip line feeding, which comprises an upper radiation layer and a lower feed layer which are tightly attached, wherein the upper radiation layer sequentially comprises a square patch layer, a first zigzag substrate integrated waveguide cavity layer, a first cross gap layer, a second zigzag substrate integrated waveguide cavity layer and a second cross gap layer from top to bottom; the substrate integrated waveguide comparator layer carries out vertical polarization feed, a vertical polarization electromagnetic field is formed after the electromagnetic field passes through the second cross gap layer, then the vertical polarization electromagnetic field is coupled to the first cross gap layer to form a high-order mode, and finally the vertical polarization electromagnetic field is coupled to the square patch layer and radiated to a free space by the square patch layer to form a vertical polarization beam; the strip line layer excites the vertical slit layer to generate a horizontally polarized electromagnetic field, then passes through the second cross slit and the first cross slit, and finally is coupled to the square patch to be radiated to a free space by the square patch to form a horizontally polarized beam.
Preferably, the upper radiation layer is divided into four squares by the metal via holes in a shape like a Chinese character 'tian', four square patches are arrayed in each square of the square patch layer, the first substrate integrated waveguide cavity layer and the second substrate integrated waveguide cavity layer are divided into four substrate integrated waveguide cavities by the metal via holes in a shape like a Chinese character 'tian', four first cross gaps are arrayed in each square of the first cross gap layer, and a second cross gap is arrayed in each square of the second cross gap layer; and the substrate integrated waveguide comparator layer carries out vertical polarization feed, when the electromagnetic field passes through the second cross-shaped gap, the horizontal gap in the second cross-shaped gap cuts the electric field, the vertical part does not cut the electric field, a vertical polarization electromagnetic field is formed, and then the horizontal part in the second cross-shaped gap is coupled to the horizontal part of the first cross-shaped gap to form a higher-order mode.
Preferably, each second cross slit is equal with respect to the four walls and the distance between each second cross slit and each fourth cross slit is equal with respect to the four walls.
Preferably, a first metal via hole, a second metal via hole, a third metal via hole and a king-shaped metal via hole are arranged on the substrate integrated waveguide comparator layer, a first port and a second port are arranged on the lower surface of the substrate integrated waveguide comparator layer, a vertical gap is arranged at a position on the vertical gap layer corresponding to the vertical gap of the second cross-shaped gap, through holes are arranged at positions corresponding to the first port and the second port, through holes are arranged at positions on the strip line layer corresponding to the first port and the second port, and a first strip line power divider and a second strip line power divider are arranged on the strip line layer; the first strip line power divider and the second strip line power divider excite the vertical gap to generate a horizontal polarization electromagnetic field, and then the horizontal polarization electromagnetic field passes through the vertical part of the second cross gap and the vertical part of the first cross gap and is finally coupled to the square patch.
Preferably, the first substrate integrated waveguide cavity layer and the second substrate integrated waveguide cavity layer are made of RogersRT5880 materials which are provided with metal via holes in a shape like a Chinese character 'tian', the relative dielectric constant of the metal via holes is 2.2, the loss tangent of the metal via holes is 0.00009, and the thickness of the metal via holes is 0.508 mm.
Preferably, the substrate integrated waveguide comparator layer and the stripline layer are made of Rogers4003C materials which are provided with field-shaped metal through holes, have the relative dielectric constant of 3.38, the loss tangent of 0.0027 and the thickness of 1.524 mm.
Preferably, the square patch layer, the first cross gap layer, the second cross gap layer, the vertical gap layer and the metal bottom plate are all made of metal copper with the thickness of 0.035 mm.
Has the advantages that: compared with the prior art, the antenna has a simple feed mode, the occupied volume of the sum-difference comparator is greatly reduced, TE42 and TE24 high-order modes are formed after coupling through multiple layers of gaps, and finally, radiation is carried out by the patch, so that the antenna gain is obviously improved. The antenna of the invention belongs to a dual-polarized antenna, can realize sum and difference wave beams in horizontal and vertical polarization directions, can effectively relieve multipath fading, and increases the capacity of a communication system through polarization diversity. Meanwhile, the antenna has the advantages of small volume, low cost, easy integration and the like.
Drawings
FIG. 1 is a cross-sectional view of an antenna of the present invention;
fig. 2 (a) is a schematic diagram of a square patch layer of the antenna of the present invention;
fig. 2 (b) is a schematic diagram of a first cruciform slot layer of the antenna of the present invention;
fig. 2 (c) is a schematic diagram of a second cross-slot layer of the antenna of the present invention;
FIG. 3 (a) is a schematic front view of a substrate integrated waveguide comparator layer in accordance with the present invention;
FIG. 3 (b) is a schematic diagram of the reverse side of a substrate integrated waveguide comparator layer in accordance with the present invention;
fig. 4 (a) is a schematic view of a vertical slot layer of the antenna of the present invention;
FIG. 4 (b) is a schematic diagram of an antenna stripline layer of the present invention;
FIG. 5 is a graph of S parameters for four ports of an antenna of the present invention;
fig. 6 (a) shows the antenna vertical polarization and beam co-polarization and cross-polarization directional diagram;
fig. 6 (b) is the co-polarized and cross-polarized directional diagram of the difference beam under the vertical polarization of the antenna of the present invention;
FIG. 6 (c) is a diagram of antenna horizontal polarization and beam co-polarization and cross-polarization patterns;
fig. 6 (d) is the co-polarized and cross-polarized directional diagram of the difference beam under the horizontal polarization of the antenna of the present invention.
Detailed Description
The technical solution of the present invention is described in detail below with reference to the accompanying drawings and specific embodiments.
As shown in fig. 1, a dual-polarized monopulse antenna based on substrate integrated waveguide and strip line feed comprises, from top to bottom, a square patch layer 1, a first zigzag substrate integrated waveguide cavity layer 2, a first cross gap layer 3, a second zigzag substrate integrated waveguide cavity layer 4, a second cross gap layer 5, a substrate integrated waveguide comparator layer 6, a vertical gap layer 7, a strip line layer 8 and a metal bottom plate 9 in sequence, and all the layers are tightly attached to each other.
The square patch layer 1, the first substrate integrated waveguide cavity layer 2 in a shape like a Chinese character 'tian', the first cross gap layer 3, the second substrate integrated waveguide cavity layer 4 in a shape like a Chinese character 'tian' and the second cross gap layer 5 form an upper radiation layer, and the substrate integrated waveguide comparator layer 6, the vertical gap layer 7, the strip line layer 8 and the metal bottom plate 9 form a lower feed layer. As shown in fig. 2 (a) to (c), the field-shaped metal via hole 11 penetrates through the entire radiation layer, and divides the radiation layer into four squares (i.e., substrate integrated waveguide cavities), four square patches are arrayed in each square on the front surface of the square patch layer (as shown in fig. 2 (a)), and the first field-shaped substrate integrated waveguide cavity layer 2 and the second field-shaped substrate integrated waveguide cavity layer 4 are divided into four substrate integrated waveguide cavities by the field-shaped metal via hole 11; four first cross slits 12 are arrayed in each square of the first cross slit layer 3, that is, the first cross slit layer 3 is provided with 16 first cross slits 12 penetrating up and down (as shown in fig. 2 (b)); a second cross-shaped gap 13 is arranged in each square of the second cross-shaped gap layer 5, that is, the second cross-shaped gap layer 5 is provided with 4 second cross-shaped gaps 13 which penetrate up and down, and each second cross-shaped gap 13 is equal to each other relative to the four walls and the distance between every two second cross-shaped gaps 13 (as shown in fig. 2 (c)). The field-shaped metal via hole 11 is a substrate integrated waveguide wall and is used for restraining electromagnetic waves in the cavity.
As shown in fig. 3 (a) and (b), a first metal via hole 14, a second metal via hole 15, a third metal via hole 17 and a "king" shaped metal via hole are provided on the substrate integrated waveguide comparator layer 6, a first port 16 and a second port 18 are provided on the lower surface of the substrate integrated waveguide comparator layer 6, and the first port 16 and the second port 18 are used for connecting an SMA joint; the metal via holes shaped like the Chinese character 'wang' are substrate integrated waveguide walls of the substrate integrated waveguide comparator layer 6, have the same effect as the metal via holes 11 shaped like the Chinese character 'tian', and are used for restraining electromagnetic waves in the cavity. As shown in fig. 4 (a), four vertical slits 19 are etched in the vertical slit layer 7 at positions corresponding to the vertical slits of the second cross-shaped slit, and through holes are provided at positions corresponding to the first port and the second port; as shown in fig. 4 (b), through holes are provided on the stripline layer 8 at positions corresponding to the first port and the second port, and a first stripline power divider 20 and a second stripline power divider 21 are provided on the stripline layer 8; through holes are provided in the vertical slot layer 7 and the stripline layer 8 at positions corresponding to the first port 16 and the second port 18, respectively.
Due to the slot antenna properties, the field in the slot is always perpendicular to the long side of the slot, regardless of the way the slot is excited. Wherein the substrate integrated waveguide comparator layer is connected with the SMA connector through the first port 16 and the second port 18 to perform vertical polarization feeding. When the electromagnetic field passes through the second cross slit 13, a vertical polarized electromagnetic field is formed because the horizontal slit in the second cross slit 13 cuts the electric field and the vertical part does not cut the electric field, then the horizontal part in the second cross slit 13 is coupled to the horizontal part of the first cross slit 12 to form a high order mode, and finally the high order mode is coupled to the square patch in the square patch layer 1 and radiated to a free space by the square patch to form a vertical polarized beam; the strip line layer 8 is connected with SMA joints by two strip line ports of a first strip line power divider 20 and a second strip line power divider 21 to be used as a horizontal polarization feed network. Similarly, the first strip line power divider 20 and the second strip line power divider 21 excite the vertical slot 19 to generate a horizontally polarized electromagnetic field, and then the horizontally polarized electromagnetic field passes through the vertical portion of the second cross slot 13 and the vertical portion of the first cross slot 12 and is finally coupled to the square patch of the square patch layer 1 and is radiated to a free space by the square patch to form a horizontally polarized beam, so that the antenna can form a dual-polarized beam.
The 4 second cross-slots in the second cross-slot layer 5 are uniformly etched in the 4 substrate integrated waveguide cavities divided by the metal vias 11 in a zigzag manner, and the distances between every two second cross-slots and the four walls are equal. Electromagnetic waves are fed into a substrate integrated waveguide cavity of a second substrate integrated waveguide cavity layer 4 in a slot coupling mode, a single-pulse antenna is coupled by a plurality of layers of slots, in the process of coupling from a second cross slot 13 to a first cross slot 12, a TE24 mode is formed in the horizontal part of the second cross slot 13, and a TE42 mode is formed in the vertical part of the second cross slot 13; and 16 uniform first cross gaps in the first cross gap layer couple the formed high-order mode to the square patch of the top layer (the square patch layer 1), and finally the high-order mode is radiated into a free space through the square patch.
The first substrate integrated waveguide cavity layer 2 and the second substrate integrated waveguide cavity layer 4 in the radiation layer are both dielectric substrates provided with metal via holes 11 shaped like Chinese character 'tian', and the two dielectric substrates are made of RogersRT5880 materials with the relative dielectric constant of 2.2, the loss tangent of 0.00009 and the thickness of 0.508 mm.
The first port 16 and the second port 18 of the substrate integrated waveguide comparator layer 6 form a difference beam network and a sum beam network, respectively. The first port 16 is shifted by 3mm to the right relative to the second port 18 so as to ensure that the electromagnetic waves form a phase difference of 180 degrees when reaching the two pairs of gaps on the left side and the right side; the difference beam in the horizontally polarized beam introduces a length difference in the strip line, so that the left and right sides are 180 ° out of phase. The first metal via hole 14, the second metal via hole 15 and the third metal via hole 17 are used for impedance matching of the substrate integrated waveguide comparator layer, equivalent to inductance, and adjustment of electric field distribution in the substrate integrated waveguide comparator layer 6, wherein the distances of the 4 cross slits of the second cross slit layer 5 and the 4 vertical slits of the vertical slit layer 7 relative to the substrate integrated waveguide wall are equal.
The first strip line power divider 20 and the second strip line power divider 21 filled in the strip line layer 8 correspond to the difference beam network and the sum beam network, respectively. The currents at the left and right ends of the first strip line power divider 20 are reversed, so that the electric field vector distribution at the cross sections of the vertical slits at the two sides in the corresponding vertical slit layer 7 is also reversed, so that the current flow directions at the two sides of the square patch layer are opposite, and a difference beam is formed in a far field. And a 180-degree phase difference is introduced at the T-shaped junction of the second strip line power divider 21, so that even if the currents at the tail ends of the two sides are opposite, the electric field vectors are different by half wavelength, so that the electric field vectors at the cross sections of the vertical slots on the two sides in the vertical slot layer 7 are distributed in the same direction, and a sum beam is formed in a far field.
In summary, the dual-polarized single-pulse feed network is formed by two different feeding modes, namely the substrate integrated waveguide comparator layer 6 and the strip line layer 8. The vertical polarization and the difference beam are excited by two SMA joints, and the difference beam SMA joint is shifted by 3mm rightwards relative to the sum beam SMA joint, so that the phase difference of a left electric field and a right electric field of the substrate integrated waveguide comparator layer 6 is 180 degrees; the difference beam in the horizontally polarized beams introduces a length difference in the strip line so that the left and right sides are 180 ° out of phase.
The substrate integrated waveguide comparator layer 6 and the strip line layer 8 in the feed layer are both dielectric substrates provided with field-shaped metal through holes 11, and the two dielectric substrates are made of Rogers4003C materials with the relative dielectric constant of 3.38, the loss tangent of 0.0027 and the thickness of 1.524 mm.
Fig. 5 is an S-parameter curve of dual polarization and difference beams of the antenna of the present invention, which shows that the integrated operating frequency of the antenna belongs to K-band and narrow band antenna.
Fig. 6 (a) and (b) are the patterns of the vertical polarization and the difference beam of the antenna of the present invention, and it can be seen that the cross-polarization level is low, the average is below-30 dB, and the beam gain reaches 16.93dBi, and the zero depth of the difference beam is below-31 dB.
Fig. 6 (c) and (d) show the horizontal polarization and difference beam patterns of the antenna of the present invention, and it can be seen that the cross-polarization level is also low, and is below-30 dB on average. However, since the horizontally polarized beam is propagated by a strip line with one more slot coupling, the gain of the sum beam is reduced to 15.47dBi compared with the horizontal polarization, and the zero depth of the difference beam is lower than-30 dB.
The invention discloses a dual-polarized single pulse antenna based on substrate integrated waveguide and strip line feed, and belongs to the technical field of antennas. The invention comprises the following steps: the device comprises a top radiation patch, two radiation layer dielectric substrates, two cross gap layers, a substrate integrated waveguide comparator layer, a strip line layer and two feed source layer dielectric substrates. The novel dual-polarized single-pulse antenna utilizes substrate integrated waveguide and strip line to form a sum-difference network required by the single-pulse antenna, and radiation is carried out by a patch through multilayer slot coupling. The monopulse antenna has the advantages of high gain, deep zero depth and high isolation, and greatly simplifies the design of a feed network of the dual-polarized monopulse antenna.
Claims (4)
1. A dual-polarized single pulse antenna based on substrate integrated waveguide and strip line feed is characterized in that: the feed layer comprises an upper radiation layer and a lower feed layer which are tightly attached, wherein the upper radiation layer sequentially comprises a square patch layer (1), a first substrate integrated waveguide cavity layer (2) shaped like a Chinese character 'tian', a first cross gap layer (3), a second substrate integrated waveguide cavity layer (4) shaped like a Chinese character 'tian' and a second cross gap layer (5) shaped like a Chinese character 'tian', the upper radiation layer is tightly attached to each layer of the upper radiation layer, the upper radiation layer is divided into four grids by a metal through hole (11) shaped like a Chinese character 'tian', four square patches are arrayed in each grid of the square patch layer, the first substrate integrated waveguide cavity layer (2) and the second substrate integrated waveguide cavity layer (4) shaped like a Chinese character 'tian' are divided into four substrate integrated waveguide cavities by the metal through hole (11), four first cross gaps (12) are arrayed in each grid of the first cross gap layer (3), and a second cross gap (13) is arrayed in each grid of the second cross gap layer (5); the lower feed source layer sequentially comprises a substrate integrated waveguide comparator layer (6), a vertical slit layer (7), a strip line layer (8) and a metal bottom plate (9) from top to bottom, and all the layers of the lower feed source layer are tightly attached; a first metal via hole (14), a second metal via hole (15), a third metal via hole (17) and a king-shaped metal via hole are formed in the substrate integrated waveguide comparator layer (6), a first port (16) and a second port (18) are formed in the lower surface of the substrate integrated waveguide comparator layer (6), a vertical gap (19) is formed in the vertical gap layer (7) and corresponds to the vertical gap of the second cross-shaped gap, through holes are formed in the positions corresponding to the first port and the second port, through holes are formed in the strip line layer (8) and correspond to the first port and the second port, and a first strip line power divider (20) and a second strip line power divider (21) are arranged on the strip line layer (8); the first strip line power divider (20) and the second strip line power divider (21) excite the vertical slot (19) to generate a horizontally polarized electromagnetic field; the substrate integrated waveguide comparator layer (6) carries out vertical polarization feeding, when an electromagnetic field passes through the second cross-shaped gap (13), the horizontal gap in the second cross-shaped gap (13) cuts the electric field, the vertical part does not cut the electric field, a vertical polarization electromagnetic field is formed, then the horizontal part in the second cross-shaped gap (13) is coupled to the horizontal part of the first cross-shaped gap (12) to form a higher order mode, and finally the vertical polarization electromagnetic field is coupled to the square patch layer (1), and a vertical polarization beam is formed by radiating the square patch layer (1) to a free space; the strip line layer (8) excites the vertical slit layer (7) to generate a horizontally polarized electromagnetic field, then the horizontally polarized electromagnetic field passes through the second cross slit (13) and the first cross slit (12) and is finally coupled to the square patch (1) and radiated to a free space by the square patch to form a horizontally polarized beam;
the distance between every two second cross-shaped gaps (13) and the distance between every two second cross-shaped gaps are equal relative to the four walls, and the distance between every two vertical gaps (19) and the distance between every two vertical gaps and the wall of the substrate integrated waveguide are equal.
2. The dual-polarized single pulse antenna based on the substrate integrated waveguide and the strip line feed as claimed in claim 1, wherein: the first matted substrate integrated waveguide cavity layer (2) and the second matted substrate integrated waveguide cavity layer (4) are made of RogersRT5880 materials with the thickness of 0.508mm, the relative dielectric constant of the matted substrate integrated waveguide cavity layers is 2.2, the loss tangent of the matted substrate integrated waveguide cavity layers is 0.00009, and the thickness of the matted substrate integrated waveguide cavity layers is 2.2.
3. The dual-polarized single pulse antenna based on the substrate integrated waveguide and the strip line feed as claimed in claim 1, wherein: the substrate integrated waveguide comparator layer (6) and the strip line layer (8) are Rogers4003C materials which are provided with a first metal through hole (14), a second metal through hole (15), a third metal through hole (17) and a 'king' shape metal through hole, the relative dielectric constant of the first metal through hole, the second metal through hole, the third metal through hole and the 'king' shape metal through hole is 3.38, the loss tangent of the first metal through hole is 0.0027, and the thickness of the first metal through hole and the 'king' shape metal through hole is 1.524 mm.
4. The dual-polarized single pulse antenna based on the substrate integrated waveguide and the strip line feed as claimed in claim 1, wherein: the square patch layer (1), the first cross gap layer (3), the second cross gap layer (5), the vertical gap layer (7) and the metal bottom plate (9) are all made of metal copper with the thickness of 0.035 mm.
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| CN115064865B (en) * | 2022-05-12 | 2023-06-20 | 华南理工大学 | Single pulse substrate integrated waveguide collinear slot array antenna |
| CN116315568B (en) * | 2023-05-22 | 2023-07-18 | 长沙航天华成科技有限公司 | Low-profile mode fission antenna with high caliber efficiency and high power capacity |
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| CN111525252A (en) * | 2020-07-06 | 2020-08-11 | 成都雷电微力科技股份有限公司 | Broadband dual-polarized antenna unit based on coupling feed |
| CN112382853A (en) * | 2020-09-18 | 2021-02-19 | 上海无线电设备研究所 | Full-shunt-feed common-caliber dual-polarized waveguide slot filter antenna array system |
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