CN219998493U - Beam forming horn antenna - Google Patents
Beam forming horn antenna Download PDFInfo
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- CN219998493U CN219998493U CN202321281796.3U CN202321281796U CN219998493U CN 219998493 U CN219998493 U CN 219998493U CN 202321281796 U CN202321281796 U CN 202321281796U CN 219998493 U CN219998493 U CN 219998493U
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- horn antenna
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- 239000002184 metal Substances 0.000 claims abstract description 7
- IHQKEDIOMGYHEB-UHFFFAOYSA-M sodium dimethylarsinate Chemical class [Na+].C[As](C)([O-])=O IHQKEDIOMGYHEB-UHFFFAOYSA-M 0.000 abstract description 3
- 238000010586 diagram Methods 0.000 description 10
- 230000005684 electric field Effects 0.000 description 6
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002708 enhancing effect Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
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Abstract
The utility model discloses a beam forming horn antenna, which comprises a horn cone horn antenna, wherein the horn cone horn antenna comprises a horn antenna body, the horn antenna body is a hollow horn-shaped shell formed by surrounding four side walls, and the cross section of the horn antenna body is rectangular; the larger end of the upper opening of the horn antenna body is a horn opening, and the smaller end of the upper opening of the horn antenna body is a feed input end; the pyramid horn antenna also comprises a feed source, wherein the feed source is a waveguide, the feed source is a shell structure with a through inside, and the cross section of the waveguide is rectangular; one end of the waveguide is a signal output end and is communicated with the feed input end; the edges of two faces extending out from two broadsides of the signal output end of the waveguide are provided with reflecting plates; each reflecting plate is a metal plate, and the included angle between each reflecting plate and the plane where the horn opening is located is an obtuse angle. The horn antenna solves the problems that in order to enhance the gain in the beam coverage range of the existing horn antenna, the volume is large and the number of the antennas is large.
Description
[ field of technology ]
The utility model belongs to the technical field of horn antennas, and particularly relates to a beam forming horn antenna.
[ background Art ]
In a search direction finding system, the antenna plays a very important role. The search direction finding system usually adopts a multi-antenna layout to achieve the purpose of receiving incoming wave signals in all directions. The traditional searching and direction-finding system has the defects of wide frequency band and large volume due to the large number of antennas. The most commonly used antenna in search direction finding systems is the pyramid horn antenna, mainly due to the low cost of manufacture of the horn antenna, the easy control of the two-dimensional beam width and the high gain. However, the biggest disadvantage of pyramid horns is that they are bulky and the first null of the electric field plane pattern is deep, requiring an increased number of antennas to cover a wider range.
[ utility model ]
The utility model aims to provide a beam forming horn antenna so as to solve the problems of larger volume and larger number of antennas of the existing pyramid horn antenna for enhancing the gain in the beam coverage range.
The utility model adopts the following technical scheme: the beam forming horn antenna comprises a horn cone horn antenna, wherein the horn cone antenna comprises a horn antenna body, the horn antenna body is a hollow horn-shaped shell formed by surrounding four side walls, and the cross section of the horn antenna body is rectangular; the larger end of the upper opening of the horn antenna body is a horn opening, and the smaller end of the upper opening of the horn antenna body is a feed input end;
the pyramid horn antenna also comprises a feed source, wherein the feed source is a waveguide, the feed source is a shell structure with a through inside, and the cross section of the waveguide is rectangular; one end of the waveguide is a signal output end and is communicated with the feed input end;
the edges of two faces extending out from two broadsides of the signal output end of the waveguide are provided with reflecting plates; each reflecting plate is a metal plate, and the included angle between each reflecting plate and the plane where the horn opening is located is an obtuse angle.
Further, the included angle between each reflecting plate and the plane of the horn opening is 130-150 degrees.
Further, the width of each reflection plate is 0.4-0.6 wavelength.
Further, the distance between each side edge of the horn opening and the corresponding side edge of the feed input end is the same.
The beneficial effects of the utility model are as follows: the utility model is divided into two parts, the main structure is a pyramid horn, and the other part is a reflecting plate positioned on the horn mouth surface. The reflecting plate and the horn wall form a certain included angle, and the level value of the first zero point of the electric field surface directional diagram can be effectively improved by adjusting the included angle and the area of the metal plate, so that the gain in the beam coverage range is enhanced, and the acting distance of the search direction-finding system is increased. The utility model can be applied to the field of search direction-finding radars, can also be applied to the field of antenna systems required by other special-shaped beams, realizes the first zero filling of the electric field surface directional diagram, improves the signal strength of the coverage area of the directional diagram, and is convenient for being matched with other antennas to form the required special beam.
[ description of the drawings ]
FIG. 1 is a schematic diagram of the structure of the present utility model;
fig. 2 is a rectangular coordinate pattern of a beam forming horn antenna marked with logarithmic scale.
The horn antenna comprises a horn antenna body 1, a horn opening 11 and a feed input end 12;
2. a waveguide 21. A signal output;
3. and a reflecting plate.
[ detailed description ] of the utility model
The utility model will be described in detail below with reference to the drawings and the detailed description.
The utility model provides a beam forming horn antenna, as shown in fig. 1, which comprises a pyramid horn antenna, wherein the pyramid horn antenna comprises a horn antenna body 1, the horn antenna body 1 is a hollow horn-shaped shell formed by surrounding four side walls, and the cross section of the horn antenna body 1 is rectangular; the larger end of the upper opening of the horn antenna body 1 is a horn opening 11, and the smaller end of the upper opening of the horn antenna body 1 is a feed input end 12.
The pyramid horn antenna further comprises a feed source, wherein the feed source is a waveguide 2 and is of a shell structure with the inside communicated, and the cross section of the waveguide 2 is rectangular; one end of the waveguide 2 is a signal output end 21 and is communicated with the feed input end 12.
The reflective plates 3 are provided at the edges of the two faces extending from the two broad sides of the signal output end 21 of the waveguide 2, i.e. the reflective plates 3 are provided on the electric field face of the horn. Each reflecting plate 3 is a metal plate, and an included angle between each reflecting plate 3 and a plane where the horn opening 11 is located is an obtuse angle. The beam forming horn antenna is fed by TE10 mode of waveguide to excite the opened metal pyramid horn to form radiation. The metal plate 3 is designed to adjust the phase of the flare plane, reduce the first zero depth of the E plane pattern, and meet the gain of more than 3dB in the range of 0 to 37 °.
In some embodiments, the angle between each reflecting plate 3 and the plane of the horn opening 11 is 130 ° -150 °.
In some embodiments, the width of each of the reflection plates 3 is 0.4 to 0.6 wavelength. The wavelength is determined according to the operating frequency of the antenna.
By adjusting the values of the included angle and the width, the phase of the horn mouth surface can be adjusted, the first zero depth of the E-plane directional diagram is reduced, and finally the required zero level of the E-plane directional diagram is obtained.
In some embodiments, each side of the horn opening 11 is the same distance from the corresponding side of the feed input 12.
The test is performed on a beam forming horn antenna of the present utility model to obtain a rectangular coordinate pattern marked with logarithmic scale as shown in fig. 2, wherein the rectangular coordinate pattern comprises two curves, the curve of solid line type represents the non-formed pattern, i.e. the conventional horn antenna pattern, and the curve of broken line type represents the formed pattern, i.e. the pattern of the beam forming horn antenna of the present utility model. As can be seen from fig. 2, the value of the first zero point of the conventional horn antenna is close to 0, and the value of the first zero point of the beam forming horn antenna is between 4 and 5, so that the beam forming horn antenna can raise the position of the first zero point, realize the first zero point filling of an electric field plane directional diagram, improve the signal intensity of the coverage area of the directional diagram, and facilitate the formation of special beams required by matching with other antennas.
The conventional pyramid horn antenna has disadvantages in that when the gain is required to be high and the beam width is narrow, the length of the horn antenna becomes long with respect to the caliber size, which is inconvenient and inconvenient to use. The beam forming horn antenna is characterized in that a pair of reflecting plates 3 are added on the basis of the existing pyramid horn antenna, the reflecting plates 3 form a certain included angle with the horn wall, and the first zero level value in the range of 0-35 degrees of a horn antenna directional diagram with the gain of 20dB can be improved by about 5dB by selecting a proper included angle and the size of the reflecting plates; the zero filling of the electric field plane directional diagram can be realized within the bandwidth range of 40%; the horn antenna solves the problems that when the gain is required to be high and the beam width is narrow, the length of the horn antenna is long relative to the caliber size, and the horn antenna is not coordinated and inconvenient to use. Meanwhile, the structure of the beam forming horn antenna is integrated, and the reliability is high; the material selection is convenient, and the process is simple and easy to realize.
Claims (4)
1. The beam forming horn antenna is characterized by comprising a pyramid horn antenna, wherein the pyramid horn antenna comprises a horn antenna body (1), the horn antenna body (1) is a hollow horn-shaped shell formed by surrounding four side walls, and the cross section of the horn antenna body (1) is rectangular; the one end of the horn antenna body (1) with a larger opening is a horn opening (11), and the one end of the horn antenna body (1) with a smaller opening is a feed input end (12);
the pyramid horn antenna further comprises a feed source, wherein the feed source is a waveguide (2) and is of a shell structure with the inside communicated, and the cross section of the waveguide (2) is rectangular; one end of the waveguide (2) is a signal output end (21) and is communicated with the feed input end (12);
the edges of two surfaces extending out from two wide edges of a signal output end (21) of the waveguide (2) are provided with reflecting plates (3); each reflecting plate (3) is a metal plate, and an included angle between each reflecting plate (3) and a plane where the horn opening (11) is located is an obtuse angle.
2. A beam forming feedhorn according to claim 1, characterised in that each of said reflecting plates (3) is at an angle of 130 ° -150 ° to the plane of said feedhorn opening (11).
3. A beam forming horn antenna according to claim 1 or 2, characterized in that the width of each of the reflecting plates (3) is 0.4-0.6 wavelength.
4. A beam forming feedhorn according to claim 1 or claim, characterised in that each side of the feedhorn opening (11) is equidistant from the corresponding side of the feed input (12).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321281796.3U CN219998493U (en) | 2023-05-25 | 2023-05-25 | Beam forming horn antenna |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321281796.3U CN219998493U (en) | 2023-05-25 | 2023-05-25 | Beam forming horn antenna |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219998493U true CN219998493U (en) | 2023-11-10 |
Family
ID=88613107
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321281796.3U Active CN219998493U (en) | 2023-05-25 | 2023-05-25 | Beam forming horn antenna |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219998493U (en) |
-
2023
- 2023-05-25 CN CN202321281796.3U patent/CN219998493U/en active Active
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