CN113346242A - Antenna pitching wave beam control structure with multiple angle change and control method - Google Patents
Antenna pitching wave beam control structure with multiple angle change and control method Download PDFInfo
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- CN113346242A CN113346242A CN202110534815.8A CN202110534815A CN113346242A CN 113346242 A CN113346242 A CN 113346242A CN 202110534815 A CN202110534815 A CN 202110534815A CN 113346242 A CN113346242 A CN 113346242A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q3/00—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system
- H01Q3/02—Arrangements for changing or varying the orientation or the shape of the directional pattern of the waves radiated from an antenna or antenna system using mechanical movement of antenna or antenna system as a whole
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/42—Housings not intimately mechanically associated with radiating elements, e.g. radome
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q1/00—Details of, or arrangements associated with, antennas
- H01Q1/50—Structural association of antennas with earthing switches, lead-in devices or lightning protectors
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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
- H01Q15/14—Reflecting surfaces; Equivalent structures
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01Q—ANTENNAS, i.e. RADIO AERIALS
- H01Q19/00—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic
- H01Q19/10—Combinations of primary active antenna elements and units with secondary devices, e.g. with quasi-optical devices, for giving the antenna a desired directional characteristic using reflecting surfaces
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Abstract
The invention provides an antenna pitching wave beam control structure with a multiple angle change and a control method, wherein the antenna pitching wave beam control structure comprises the following steps: the antenna comprises a main reflecting antenna shell, an auxiliary reflecting antenna, a feed source, a motor and an axial angle converter; an auxiliary reflection antenna is arranged on the inner side of the main reflection antenna shell, and a feed source is arranged between the main reflection antenna shell and the auxiliary reflection antenna; electromagnetic wave signals are radiated to the main reflection antenna shell through the feed source and then reflected to the auxiliary reflection antenna by the main reflection antenna shell, and the auxiliary reflection antenna reflects the electromagnetic wave signals through the main reflection antenna shell and irradiates a target; the auxiliary reflection antenna is connected with and adjusts the angle through an axial angle converter, and the axial angle converter is connected with a motor and driven by the motor. The invention avoids adding a pitching axis system for controlling the pitching rotation of the equipment shell on the appearance of the equipment, and can select a small motor to drive the pitching rotation of the secondary reflection antenna in the equipment in a connecting rod mode, thereby realizing the small-range stroke motion.
Description
Technical Field
The invention relates to the field of guidance irradiation mechanisms, in particular to an antenna pitching wave beam control structure with a variable multiple angle and a control method.
Background
In a radio semi-active homing guided weapon system, a missile needs to receive echo signals reflected by a target in the flight process, so that a guided irradiation radar in a ground/ship surface device is needed to irradiate the target. Because the azimuth and the elevation angle change in real time in the target flight process, the guidance irradiation radar needs to drive the servo control motor according to the target guidance data calculated by the fire control system, and control the azimuth axis system and the pitch axis system to rotate, so that the guidance irradiation beam can be always aligned with the target to irradiate, and the requirement of receiving the target echo in the semi-active missile searching process is met.
Patent document CN109462017B discloses a circularly polarized single pulse cassegrain antenna, which includes a main reflection surface and an auxiliary reflection surface that are coaxially arranged, an assembling device connecting the main reflection surface and the auxiliary reflection surface, a feed source and a feed network, wherein the feed source is an integrally formed circularly polarized single pulse feed source, the circularly polarized single pulse feed source includes four circularly polarized feed source units that are arranged 2 × 2 and have the same structure, and feed ports of the four circularly polarized feed source units are connected with the feed network.
Patent document CN110739547A relates to a cassegrain antenna, which includes a feed antenna, a main reflecting surface, an auxiliary reflecting surface, and a main and auxiliary reflecting surface fixing device; the feed source antenna is a conical horn in the horn antenna, the main reflecting surface is in a paraboloid form, the auxiliary reflecting surface is replaced by the frequency selection surface, the frequency selection surface can generate resonance at frequency points of 8-14.5GHz and 29-34GHz, electromagnetic waves at the frequency points are transmitted, a wide radiation directional diagram is generated, reflection is realized at other frequency points, the directional diagram is narrow, the performance of the communication-in-motion system is greatly improved, the antenna works in dual frequency, the working frequency bands are respectively 8-14.5GHz and 29-34GHz, the directional diagrams respectively comprise a radiation directional diagram with a narrow wave beam and a wide wave beam in two working frequency bands, and the feed source antenna can be well applied to the communication-in-motion antenna system.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide an antenna pitching wave beam control structure with a variable multiple angle and a control method.
The antenna pitching wave beam control structure with the angle multiplication change provided by the invention comprises the following components: the antenna comprises a main reflecting antenna shell, an auxiliary reflecting antenna, a feed source, a motor and an axial angle converter;
the auxiliary reflection antenna is arranged on the inner side of the main reflection antenna shell, and the feed source is arranged between the main reflection antenna shell and the auxiliary reflection antenna;
after electromagnetic wave signals are radiated to the main reflection antenna shell through the feed source, the electromagnetic wave signals are reflected to the auxiliary reflection antenna by the main reflection antenna shell, and the auxiliary reflection antenna reflects the electromagnetic wave signals through the main reflection antenna shell and irradiates a target;
the auxiliary reflection antenna is connected with and adjusts the angle through the shaft angle converter, and the shaft angle converter is connected with and driven by the motor.
Preferably, the main reflection antenna housing is provided as a hemispherical housing, and the auxiliary reflection antenna is provided inside the hemispherical housing;
the auxiliary reflection antenna is a round aluminum flat plate, and rigid foam with the thickness of one quarter wavelength of the electromagnetic wave signals is adhered to the surface of the round aluminum flat plate.
Preferably, the inner wall of the main reflection antenna shell is provided with a horizontal polarization grid, and the horizontal polarization grid is formed by interweaving copper wires and polyester wires serving as warps and wefts respectively into a screen-shaped fabric and stretching the screen-shaped fabric on a mold base.
Preferably, one side of the auxiliary reflection antenna, which faces the main reflection antenna shell, is provided with a polarization grid, and the polarization grid is formed by interweaving copper wires and polyester wires.
Preferably, one side of the secondary reflection antenna is installed at one side of a link mechanism, the other side of the link mechanism is connected with a driving gear box, and the driving gear box is connected with the motor.
Preferably, the drive gear box internally mounts the gear set and the shaft angle converter.
Preferably, the link mechanism is connected with the motor through the gear set, and the motor drives the link mechanism to rotate through the gear set in a meshing manner;
the link mechanism drives the auxiliary reflection antenna to rotate.
Preferably, the shaft angle converter is connected with the gear set and controls the rotation angle of the secondary reflection antenna through the gear set and the link mechanism.
Preferably, the link mechanism comprises two four-link mechanisms, and the four-link mechanisms are formed by sequentially connecting four links end to end;
the feed source comprises a pyramid horn and a sleeve horn, the pyramid horn is installed inside the sleeve horn through a sliding block and a roller, and the feed source passes through the pyramid horn and the sleeve horn to control the width of the electromagnetic wave signal.
The invention also provides a method for controlling the antenna pitching wave beam control structure with the angle multiplication change, which comprises the following steps:
step S1, the feed source is located at a focus O, the feed source radiates the electromagnetic wave signal and irradiates a point P on the horizontal polarization grid EMF, and the point P is marked as a first ray OP;
step S2, the first ray OP is reflected by the horizontal polarization grid EMF along the horizontal direction and irradiates a point C on the polarization grid GH, and is marked as a second ray PC;
step S3, the second ray PC is reflected to a target A through the polarization grid GH and is marked as a third ray CA, and CN is set as a normal line of the polarization grid GH;
step S4, a focus O intersects with the horizontal polarization grid EMF at a point M and intersects with the polarization grid GH at a point B along the horizontal direction, and when the polarization grid GH is in the vertical plane, the radiation direction of the first ray OP is OM;
step S5, when the polarization grid GH rotates by an angle theta from a vertical plane position, the polarization grid GH and the vertical plane BQ form an included angle QBH, angle QBH is theta, the third ray CA and the second ray PC form an included angle PCA in a reverse extension line, angle PCA is 2 and angle QBH is 2 theta, and the normal CN bisects angle PCA;
the third ray CA rotates by an angle of 2 theta for every rotation of the sub-reflector antenna by an angle of theta.
Compared with the prior art, the invention has the following beneficial effects:
1. the invention avoids adding a pitching axis system for controlling the pitching rotation of the equipment shell on the appearance of the equipment, and can select a small motor to drive the pitching rotation of the secondary reflection antenna in the equipment in a connecting rod mode, thereby realizing small-range stroke motion, controlling large-range pitching beam change and reducing the complexity of the integrated design of the equipment and the product weight.
Drawings
Other features, objects and advantages of the invention will become more apparent upon reading of the detailed description of non-limiting embodiments with reference to the following drawings:
FIG. 1 is a schematic diagram of a structure of an antenna elevation beam control structure with a variable multiple angle;
FIG. 2 is a schematic view (I) of a rotating structure of the secondary reflection antenna;
FIG. 3 is a schematic view (II) of the rotary structure of the secondary reflection antenna
FIG. 4 is a front view of the secondary reflector antenna;
shown in the figure:
Detailed Description
The present invention will be described in detail with reference to specific examples. The following examples will assist those skilled in the art in further understanding the invention, but are not intended to limit the invention in any way. It should be noted that it would be obvious to those skilled in the art that various changes and modifications can be made without departing from the spirit of the invention. All falling within the scope of the present invention.
Example 1
As shown in fig. 1, 2 and 4, an antenna elevation beam steering structure with a multiple angle change includes: the antenna comprises a main reflecting antenna shell 1, an auxiliary reflecting antenna 2, a feed source 3, a motor 5 and an axial angle converter 6; an auxiliary reflection antenna 2 is arranged on the inner side of the main reflection antenna shell 1, and a feed source 3 is arranged between the main reflection antenna shell 1 and the auxiliary reflection antenna 2; after electromagnetic wave signals are radiated to the main reflecting antenna shell 1 through the feed source 3, the electromagnetic wave signals are reflected to the auxiliary reflecting antenna 2 by the main reflecting antenna shell 1, and the auxiliary reflecting antenna 2 reflects the electromagnetic wave signals through the main reflecting antenna shell 1 and irradiates a target; the secondary reflection antenna 2 is connected with and adjusted in angle through an axial angle converter 6, and the axial angle converter 6 is connected with a motor 5 and driven through the motor 5. Feed 3 includes pyramid loudspeaker and sleeve loudspeaker, and pyramid loudspeaker pass through the slider and the gyro wheel is installed inside sleeve loudspeaker, and feed 3 passes through toper loudspeaker and sleeve loudspeaker control electromagnetic wave signal width. The main reflection antenna shell 1 is arranged as a hemispherical shell, and the auxiliary reflection antenna 2 is arranged on the inner side of the hemispherical shell; the secondary reflection antenna 2 is a round aluminum flat plate, and rigid foam with the thickness of one quarter wavelength of an electromagnetic wave signal is adhered to the surface of the round aluminum flat plate. The inner wall of the main reflection antenna shell 1 is provided with a horizontal polarization grid, and the horizontal polarization grid is formed by interweaving copper wires and polyester wires serving as warps and wefts respectively into a screen-shaped fabric and stretching the screen-shaped fabric on a mould. The side, facing the main reflecting antenna shell 1, of the auxiliary reflecting antenna 2 is provided with a polarization grid 9, and the polarization grid 9 is formed by interweaving copper wires and polyester wires.
As shown in fig. 2 and 3, one side of the secondary reflection antenna 2 is mounted on one side of the link mechanism 4, the other side of the link mechanism 4 is connected to the driving gear box 7, and the driving gear box 7 is connected to the motor 5. The drive gear box 7 internally mounts the gear set 8 and the shaft angle converter 6. The link mechanism 4 is connected with the motor 5 through a gear set 8, and the motor 5 is meshed with the link mechanism 4 through the gear set 8 to drive the link mechanism 4 to rotate; the link mechanism 4 drives the secondary reflection antenna 2 to rotate. The shaft angle converter 6 is connected with the gear set 8 and controls the rotation angle of the secondary reflection antenna 2 through the gear set 8 and the link mechanism 4. The connecting rod mechanism 4 comprises two four-connecting-rod mechanisms which are formed by sequentially connecting four connecting rods end to end;
the invention also provides a method for controlling the antenna pitching wave beam control structure with the angle multiplication change, which comprises the following steps: step S1, the feed source 3 is located at the focus O, the feed source 3 radiates the electromagnetic wave signal and irradiates a point P on the horizontal polarization grid EMF, and the point P is marked as a first ray OP; step S2, the first ray OP is reflected by the horizontal polarization grid EMF in the horizontal direction and strikes a point C on the polarization grid 9GH, and is recorded as a second ray PC; step S3, the second ray PC is reflected to the target A through the polarization grid 9GH and is marked as a third ray CA, and CN is set as the normal line of the polarization grid 9 GH; step S4, the focus O crosses the horizontal polarization grid EMF at a point M and crosses the polarization grid 9GH at a point B along the horizontal direction, and when the polarization grid 9GH is in the vertical plane, the radiation direction of the first ray OP is OM; step S5, when the polarization grid 9GH rotates by an angle theta from a vertical plane position, the polarization grid 9GH and the vertical plane BQ form an included angle QBH, a angle QBH is theta, a third ray CA and a second ray PC reverse extension line form an included angle PCA, the angle PCA is 2 and QBH is 2 theta, and a normal CN bisects the angle PCA; the third ray CA rotates by an angle of 2 theta for every rotation of the sub-reflecting antenna 2 by an angle of theta.
Example 2
Example 2 is a preferred example of example 1.
The invention mainly comprises the following structures:
main reflection antenna case 1: the distorted Cassegrain antenna is characterized in that a layer of horizontal polarization grid is covered on an inner paraboloid, and a screen-shaped fabric formed by interweaving copper wires and polyester wires serving as warps and wefts is stretched on a mould; sub-reflection antenna 2: the substrate of the secondary reflection antenna 2 is a smooth round aluminum flat plate, a rigid foam material with the thickness of one quarter wavelength of an irradiation signal is adhered to the surface of the secondary reflection antenna, and a layer of copper wire polyester interwoven fabric is covered to be used as a polarization grid 9; and the feed source 3: the horn-shaped radiation device comprises a pyramid-shaped horn and a sleeve horn which can slide on the surface of the pyramid-shaped horn, wherein the sleeve horn and the pyramid-shaped horn inside are supported by a sliding block and a roller when sliding, do not need to keep good electric contact with each other, and are used for controlling the beam width of beam radiation; the link mechanism 4: the device consists of two four-bar mechanisms and is used for controlling the pitching of the auxiliary reflecting antenna 2; shaft angle converter 6 and motor 5: used for driving the link mechanism 4 and controlling the angle of rotation of the secondary reflecting antenna 2; base and casing: for realizing the installation of the mechanism.
This every single move beam control mechanical structure has utilized electromagnetic wave reflection principle, places the feed 3 of transmitter radiation in horizontal polarization bars EMF's focus O department, when not changing main reflection antenna casing 1 (equipment shell) elevation, can realize the control in the beam every single move direction, and concrete structural principle is:
electromagnetic beam transmission path:
the feed source 3 radiates a first ray OP at the focus O; the first ray OP forms a second ray PC after being reflected by the horizontal polarization grid EMF and is reflected to the polarization grid 9GH in parallel; the third ray CA is reflected twice and then irradiates a distant airborne target through the main reflector antenna housing 1.
Angle multiplication control relation:
OM is parallel to the horizontal plane, and CN is the normal of the polarization grid 9 GH; when the polarization grid 9GH is in the vertical plane, the radiation direction of the first ray OP is OM;
the polarization grid 9GH rotates from the vertical plane position to an angle theta, namely an angle QBH (equal to theta);
after the second reflection, the third ray CA forms an angle 2 θ with the horizontal plane OM, that is, the angle ACP is 2 θ;
therefore, the radiation angle of the electromagnetic wave signal beam can be changed by controlling the rotation of the secondary reflection antenna 2, namely, the electromagnetic wave signal beam can rotate by 2 theta angle every time the secondary reflection antenna 2 rotates by theta angle, and further the angle multiplication control of the antenna beam is realized.
In the description of the present application, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on those shown in the drawings, and are only for convenience in describing the present application and simplifying the description, but do not indicate or imply that the referred device or element must have a specific orientation, be constructed in a specific orientation, and be operated, and thus, should not be construed as limiting the present application.
The foregoing description of specific embodiments of the present invention has been presented. It is to be understood that the present invention is not limited to the specific embodiments described above, and that various changes or modifications may be made by one skilled in the art within the scope of the appended claims without departing from the spirit of the invention. The embodiments and features of the embodiments of the present application may be combined with each other arbitrarily without conflict.
Claims (10)
1. An antenna elevation beam steering structure with a variable power angle, comprising: the antenna comprises a main reflecting antenna shell (1), an auxiliary reflecting antenna (2), a feed source (3), a motor (5) and an axial angle converter (6);
the auxiliary reflection antenna (2) is arranged on the inner side of the main reflection antenna shell (1), and the feed source (3) is arranged between the main reflection antenna shell (1) and the auxiliary reflection antenna (2);
after electromagnetic wave signals are radiated to the main reflection antenna shell (1) through the feed source (3), the electromagnetic wave signals are reflected to the auxiliary reflection antenna (2) through the main reflection antenna shell (1), and the auxiliary reflection antenna (2) reflects the electromagnetic wave signals through the main reflection antenna shell (1) and irradiates a target;
the auxiliary reflection antenna (2) is connected with and the angle of the auxiliary reflection antenna is adjusted through the shaft angle converter (6), and the shaft angle converter (6) is connected with the motor (5) and driven through the motor (5).
2. The variable-power antenna elevation beam steering structure of claim 1, wherein: the main reflection antenna shell (1) is arranged as a hemispherical shell, and the auxiliary reflection antenna (2) is arranged on the inner side of the hemispherical shell;
the auxiliary reflection antenna (2) is arranged as a round aluminum flat plate, and rigid foam with the thickness of one quarter wavelength of the electromagnetic wave signals is adhered to the surface of the round aluminum flat plate.
3. The variable-power antenna elevation beam steering structure of claim 2, wherein: the inner wall of the main reflection antenna shell (1) is provided with a horizontal polarization grid, and the horizontal polarization grid is formed by interweaving copper wires and polyester wires serving as warps and wefts respectively into a screen-shaped fabric and stretching the screen-shaped fabric on a mould.
4. The variable-power antenna elevation beam steering structure of claim 2, wherein: one side of the auxiliary reflection antenna (2) facing the main reflection antenna shell (1) is provided with a polarization grid (9), and the polarization grid (9) is formed by interweaving copper wires and polyester wires.
5. The variable-power antenna elevation beam steering structure of claim 4, wherein: one side of the auxiliary reflection antenna (2) is installed on one side of the connecting rod mechanism (4), the other side of the connecting rod mechanism (4) is connected with the driving gear box (7), and the driving gear box (7) is connected with the motor (5).
6. The variable-power antenna elevation beam steering structure of claim 5, wherein: the driving gear box (7) is internally provided with a gear set (8) and the shaft angle converter (6).
7. The variable-power antenna elevation beam steering structure of claim 6, wherein: the link mechanism (4) is connected with the motor (5) through the gear set (8), and the motor (5) drives the link mechanism (4) to rotate through the gear set (8) in a meshed mode;
the link mechanism (4) drives the auxiliary reflection antenna (2) to rotate.
8. The variable-power antenna elevation beam steering structure of claim 7, wherein: the shaft angle converter (6) is connected with the gear set (8) and controls the rotation angle of the auxiliary reflection antenna (2) through the gear set (8) and the link mechanism (4).
9. The variable-power antenna elevation beam steering structure of claim 5, wherein: the connecting rod mechanism (4) comprises two four-connecting-rod mechanisms which are formed by sequentially connecting four connecting rods end to end;
the feed source (3) comprises a pyramid-shaped horn and a sleeve horn, the pyramid-shaped horn is installed inside the sleeve horn through a sliding block and a roller, and the feed source (3) controls the width of the electromagnetic wave signal through the pyramid-shaped horn and the sleeve horn.
10. A method for steering the elevation beam steering structure of the multiple angle antenna according to claim 8, comprising the steps of:
step S1, the feed source (3) is located at a focus O, the feed source (3) radiates the electromagnetic wave signal and irradiates a point P on the horizontal polarization grid EMF, and the point P is marked as a first ray OP;
step S2, reflecting the first ray OP along the horizontal direction by the horizontal polarization grid EMF and irradiating a point C on the polarization grid (9) GH, and marking as a second ray PC;
step S3, the second ray PC is reflected to the target A through the polarization grid (9) GH and is marked as a third ray CA, and CN is set as a normal line of the polarization grid (9) GH;
step S4, a focus O crosses a horizontal polarization grid EMF at a point M and crosses a polarization grid (9) GH at a point B along the horizontal direction, and when the polarization grid (9) GH is in the vertical plane, the radiation direction of the first ray OP is OM;
step S5, when the polarization grid (9) GH rotates by an angle theta from a vertical plane position, the polarization grid (9) GH and a vertical plane BQ form an included angle QBH, angle QBH is theta, the third ray CA and the second ray PC reversely extend to form an included angle PCA, angle PCA is 2 and angle QBH is 2 theta, and the normal CN bisects angle PCA;
the third ray CA is rotated by an angle of 2 theta every time the sub-reflecting antenna (2) is rotated by an angle of theta.
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| Application Number | Priority Date | Filing Date | Title |
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| CN202110534815.8A CN113346242B (en) | 2021-05-17 | 2021-05-17 | Antenna pitching wave beam control structure with multiple angle change and control method |
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| CN202110534815.8A CN113346242B (en) | 2021-05-17 | 2021-05-17 | Antenna pitching wave beam control structure with multiple angle change and control method |
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| CN113346242B CN113346242B (en) | 2022-10-18 |
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| CN2772051Y (en) * | 2004-12-02 | 2006-04-12 | 上海航天电子通讯设备研究所 | X-wave band autenna |
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