A spherical near-field antenna measurement system and correction method

Abstract

The present invention relates to the technical field of spherical antennas, and in particular to a spherical near-field antenna measurement system and a correction method; the spherical near-field antenna measurement system comprises a spherical array, a frame and a correction piece, the spherical array is arranged on the upper side of the frame and cooperates with the frame, the correction piece is arranged on the lower side of the frame, and the correction piece rotates with the frame; the frame comprises a plurality of drive frames and a spherical frame provided with a plurality of grooves, the spherical frame fits with the spherical array through the plurality of grooves, the spherical frame is fixedly connected with the correction piece, a plurality of drive frames are all rotationally connected with the spherical array, and a plurality of drive frames penetrate the grooves and are fixedly connected with the correction piece, the structure of the measurement system is improved, the drive frame cooperates with the spherical frame, the pitch angle of the spherical array is changed through the drive frame, thereby effectively expanding the receiving range of the spherical array, thereby effectively improving the use range of the spherical near-field antenna.

Description

Technical Field

[0001] The present invention relates to the technical field of spherical antennas, and in particular to a spherical near-field antenna measurement system and a correction method. Background Art

[0002] Spherical antennas can achieve all-round hemispherical radiation and have incomparable advantages in many antenna systems. They are often used in ground communication systems and airborne and vehicle-mounted communication systems.

[0003] In the prior art, when using a spherical near-field antenna, it is found that the angle of the near-field antenna cannot be adjusted as needed, resulting in the inability to effectively expand the use range of the near-field antenna. Summary of the invention

[0004] The object of the present invention is to provide a spherical near-field antenna measurement system and correction method to solve the problem in the prior art that the spherical near-field antenna cannot be adjusted in angle as required.

[0005] To achieve the above object, the present invention provides a spherical near-field antenna measurement system, which comprises a spherical array, a frame and a correction piece, wherein the spherical array is arranged on the upper side of the frame and cooperates with the frame, and the correction piece is arranged on the lower side of the frame and the correction piece is rotationally matched with the frame;

[0006] The skeleton includes a plurality of drive frames and a spherical frame with a plurality of grooves, the spherical frame fits with the spherical array through the plurality of grooves, and the spherical frame is fixedly connected to the correction member, the plurality of drive frames are rotatably connected to the spherical array, and the plurality of drive frames penetrate the grooves and are fixedly connected to the correction member.

[0007] The spherical array receives signals, the skeleton cooperates to install the spherical array and limits the moving path of the spherical array during correction, the correction component adjusts the orientation angle of the spherical array so that it can be used as needed, the driving frame is used to adjust the pitch angle of the spherical array to meet the use needs of the spherical array, the spherical frame is used to cooperate with the spherical array to protect the spherical array, and the plurality of grooves are used to place the components of the spherical array.

[0008] Among them, each of the driving frames includes a pump chamber, a bolt, a telescopic arm and a stabilizing seat. The pump chamber is arranged on the upper side of the correction piece and is fixedly connected to the correction piece. The bolt is arranged on the upper side of the pump chamber and cooperates with the pump chamber by injecting oil. The two ends of the telescopic arm are connected to the spherical array and the stabilizing seat. The stabilizing seat is arranged on the upper side of the bolt and is fixedly connected to the bolt.

[0009] The pump chamber cooperates with the bolt, and by injecting oil, the bolt can change its height as needed, thereby realizing the adjustment of the height of the spherical array. The telescopic arm cooperates with the stabilizing seat to realize the fine adjustment of the pitch angle of the spherical array, thereby further meeting the correction needs of the measurement system. The stabilizing seat is used to install the telescopic arm, thereby facilitating the adjustment of the spherical array.

[0010] Among them, the telescopic arm is provided with a accommodating sleeve, a sliding arm, a matching roller sleeve and a guide cable. The accommodating sleeve is arranged on the lower side of the spherical array and is rotatably connected to the spherical array. The sliding arm is arranged on the inner side of the accommodating sleeve, and the sliding arm is slidably connected to the accommodating sleeve through the matching roller sleeve. The guide cable is arranged on the outer surface of the sliding arm to cooperate with the accommodating sleeve for self-protection. The matching roller sleeves are arranged on both sides of the outside of the sliding arm, and the matching roller sleeves are rollingly matched with the accommodating sleeve.

[0011] The accommodating sleeve cooperates with the sliding arm, and the relative distance between the accommodating sleeve and the sliding arm is adjusted by rotating the cooperating roller sleeve, so that the pitch angle of the spherical array can be adjusted. The guide cable cooperates with the sliding arm and is arranged in the sliding arm, thereby reducing the wear of the guide cable, thereby effectively improving the service life of the telescopic arm.

[0012] Wherein, the correction part includes a support plate, a bevel gear group and a limiting seat, the support plate is arranged on the lower side of several of the driving frames and is fixedly connected to the several driving frames, the bevel gear group is arranged on the inner side of the limiting seat, and the bevel gear group is rotatably connected to the limiting seat, and the bevel gear group is fixedly matched with the support plate.

[0013] The support plate is used to support a plurality of the drive frames, and the bevel gear set realizes the rotation of the support plate by rotating, thereby realizing the adjustment of the orientation angle of the spherical array, and the limiting seat cooperates with the bevel gear set to meet the rotation requirements of the bevel gear.

[0014] Wherein, the bevel gear set includes a driven bevel gear and a driving bevel gear, the driving bevel gear is externally connected to a motor to drive the driven bevel gear to rotate, the driven bevel gear is arranged at the center of the support plate, and the driven bevel gear is also rotatably connected to the limiting seat.

[0015] The active bevel gear is used to rotate under the action of an external motor, and drives the driven bevel gear to rotate together, and the driven bevel gear drives the support plate to rotate, thereby realizing the adjustment of the orientation angle of the entire measuring system to meet the correction needs.

[0016] The present invention also provides a calibration method for a spherical near-field antenna measurement system, using the above-mentioned measurement system.

[0017] The calibration method comprises the following steps:

[0018] Start the bevel gear set to make the spherical array rotate according to the demand until it turns to the predetermined direction;

[0019] Start the drive frame and adjust the height of the spherical array in the frame through the cooperation of the pump and the bolt;

[0020] After the height adjustment is completed, the telescopic arm is started again, and the accommodating sleeve is driven to move by the rotation of the coordinated roller sleeve, thereby achieving fine adjustment of the pitch angle of the spherical array, and then completing the calibration of the measurement system.

[0021] Corresponding to the modification of the measurement system, a correction method is proposed, and the cooperation between the driving frame and the spherical frame is utilized so that the orientation angle, height and pitch angle of the spherical array can be modified as needed, so that the measurement system can be corrected at any time, effectively improving the self-correction capability of the measurement system.

[0022] A spherical near-field antenna measurement system and correction method of the present invention improves the structure of the measurement system, utilizes the driving frame to cooperate with the spherical frame, and changes the pitch angle of the spherical array through the driving frame, thereby effectively expanding the receiving range of the spherical array, thereby effectively improving the use range of the spherical near-field antenna. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0024] Figure 1 The present invention is a schematic diagram of the axonometric structure of a spherical near-field antenna measurement system.

[0025] Figure 2 The present invention provides a schematic diagram of the isometric structure of a correction component of a spherical near-field antenna measurement system.

[0026] Figure 3 The present invention is a schematic diagram of the side view structure of a correction component of a spherical near-field antenna measurement system provided by the present invention.

[0027] Figure 4 The present invention provides a schematic diagram of the isometric structure of a driving frame and an antenna plate of a spherical near-field antenna measurement system.

[0028] Figure 5 It is a schematic cross-sectional structural diagram of an antenna plate of a spherical near-field antenna measurement system provided by the present invention.

[0029] Figure 6 The present invention provides a schematic cross-sectional structural diagram of a telescopic arm of a spherical near-field antenna measurement system.

[0030] Figure 7 The present invention provides a schematic diagram of the axonometric structure of a spherical array of a spherical near-field antenna measurement system.

[0031] Figure 8 The present invention provides a schematic cross-sectional structural diagram of a pump cavity and a bolt column of a spherical near-field antenna measurement system.

[0032] Fig. 9 It is a schematic diagram of the steps of a correction method for a spherical near-field antenna measurement system provided by the present invention.

[0033] 1-spherical array, 2-skeleton, 3-correction part, 4-antenna plate, 5-insulation cover, 6-heating block, 7-driving frame, 8-spherical frame, 9-support plate, 10-bevel gear set, 11-limiting seat, 12-pump chamber, 13-bolt, 14-telescopic arm, 15-stabilizing seat, 16-driven bevel gear, 17-driving bevel gear, 18-rotating shaft, 19-support, 20-accommodating sleeve, 21-sliding arm, 22-matching roller sleeve, 23-guide cable, 24-rotating rod, 25-groove, 26-drainage hole. DETAILED DESCRIPTION

[0034] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, and should not be construed as limiting the present invention.

[0035] In the description of the present invention, it should be understood that the terms "length", "width", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, in the description of the present invention, "multiple" means two or more, unless otherwise clearly and specifically defined.

[0036] See also Figures 1 to 8The present invention provides a spherical near-field antenna measurement system, which comprises a spherical array 1, a skeleton 2 and a correction piece 3, wherein the spherical array 1 is arranged on the upper side of the skeleton 2 and cooperates with the skeleton 2, and the correction piece 3 is arranged on the lower side of the skeleton 2, and the correction piece 3 is rotationally matched with the skeleton 2;

[0037] The skeleton 2 includes a plurality of drive frames 7 and a spherical frame 8 provided with a plurality of grooves 25. The spherical frame 8 fits with the spherical array 1 through the plurality of grooves 25, and the spherical frame 8 is fixedly connected to the correction member 3. The plurality of drive frames 7 are rotatably connected to the spherical array 1, and the plurality of drive frames 7 pass through the grooves 25 and are fixedly connected to the correction member 3.

[0038] In this embodiment, the spherical array 1 receives signals, the skeleton 2 cooperates to install the spherical array 1 and limits the moving path of the spherical array 1 during correction, the correction member 3 adjusts the orientation angle of the spherical array 1 so as to be used as needed, the driving frame 7 is used to adjust the pitch angle of the spherical array 1 to meet the use requirements of the spherical array 1, the spherical frame 8 is used to cooperate with the spherical array 1 to protect the spherical array 1, and the plurality of grooves 25 are used to place the components of the spherical array 1.

[0039] Furthermore, each of the driving frames 7 includes a pump chamber 12, a bolt 13, a telescopic arm 14 and a stabilizing seat 15. The pump chamber 12 is arranged on the upper side of the correction member 3 and is fixedly connected to the correction member 3. The bolt 13 is arranged on the upper side of the pump chamber 12 and cooperates with the pump chamber 12 by injecting oil. Both ends of the telescopic arm 14 are connected to the spherical array 1 and the stabilizing seat 15. The stabilizing seat 15 is arranged on the upper side of the bolt 13 and is fixedly connected to the bolt 13.

[0040] In this embodiment, the pump chamber 12 cooperates with the bolt 13, and by injecting oil, the bolt 13 can change its height as needed, thereby realizing the adjustment of the height of the spherical array 1, and the telescopic arm 14 cooperates with the stabilizing seat 15, thereby realizing the fine adjustment of the pitch angle of the spherical array 1, thereby further meeting the correction needs of the measurement system, and the stabilizing seat 15 is used to install the telescopic arm 14, thereby facilitating the adjustment of the spherical array 1.

[0041] Furthermore, the telescopic arm 14 is provided with a accommodating sleeve 20, a sliding arm 21, a matching roller sleeve 22 and a guide cable 23. The accommodating sleeve 20 is arranged on the lower side of the spherical array 1 and is rotatably connected to the spherical array 1. The sliding arm 21 is arranged on the inner side of the accommodating sleeve 20, and the sliding arm 21 is slidably connected to the accommodating sleeve 20 through the matching roller sleeve 22. The guide cable 23 is arranged on the outer surface of the sliding arm 21 to cooperate with the accommodating sleeve 20 for self-protection. The matching roller sleeve 22 is arranged on both sides of the outside of the sliding arm 21, and the matching roller sleeve 22 is rollingly matched with the accommodating sleeve 20.

[0042] In this embodiment, the accommodating sleeve 20 cooperates with the sliding arm 21. By rotating the cooperating roller sleeve 22, the relative distance between the accommodating sleeve 20 and the sliding arm 21 can be adjusted, so that the pitch angle of the spherical array 1 can be adjusted. The guide cable 23 cooperates with the sliding arm 21 and is arranged in the sliding arm 21, thereby reducing the wear of the guide cable 23, thereby effectively improving the service life of the telescopic arm 14.

[0043] Furthermore, the correction member 3 includes a support plate 9, a bevel gear group 10 and a limiting seat 11, the support plate 9 is arranged on the lower side of the plurality of driving frames 7 and is fixedly connected to the plurality of driving frames 7, the bevel gear group 10 is arranged on the inner side of the limiting seat 11, and the bevel gear group 10 is rotatably connected to the limiting seat 11, and the bevel gear group 10 is fixedly matched with the support plate 9.

[0044] In this embodiment, the support plate 9 is used to support a plurality of the drive frames 7, and the bevel gear set 10 realizes the rotation of the support plate 9 by rotating, thereby realizing the adjustment of the orientation angle of the spherical array 1, and the limiting seat 11 cooperates with the bevel gear set 10 to meet the rotation requirements of the bevel gear set 10.

[0045] Furthermore, the bevel gear set 10 includes a driven bevel gear 16 and a driving bevel gear 17. The driving bevel gear 17 is externally connected to a motor to drive the driven bevel gear 16 to rotate. The driven bevel gear 16 is arranged at the center of the support plate 9, and the driven bevel gear 16 is also rotatably connected to the limiting seat 11.

[0046] In this embodiment, the active bevel gear 17 is rotated by an external motor and drives the driven bevel gear 16 to rotate together, and the driven bevel gear 16 drives the support plate 9 to rotate, thereby adjusting the orientation angle of the entire measuring system to meet the calibration requirements.

[0047] Furthermore, the spherical array 1 includes a plurality of antenna plates 4, the number of the plurality of antenna plates 4 is the same as the number of the driving racks 7, and the plurality of antenna plates 4 and the plurality of driving racks 7 are arranged in a one-to-one correspondence;

[0048] The spherical array 1 is also provided with a heat preservation cover 5 and a heating block 6. The heating block 6 is arranged at the bottom of the antenna plate 4 and is used to heat the antenna plate 4. The heat preservation cover 5 covers the heating block 6, and a drainage hole 26 is opened at the bottom of the heat preservation cover 5.

[0049] In this embodiment, by cooperating with a plurality of the antenna plates 4 and the corresponding drive frames 7, the angle of each antenna plate 4 of the spherical array 1 can be adjusted, thereby improving the application range of the spherical array 1. The thermal insulation cover 5 cooperates with the heating block 6. Through the heating of the heating block 6, the antenna plate 4 can be heated as needed to avoid affecting the performance of the antenna plate 4 when the external temperature is low. The drainage hole 26 of the thermal insulation cover 5 is used to discharge condensed water droplets from the thermal insulation cover 5.

[0050] Further, the limiting seat 11 includes a rotating shaft 18 and a support 19 provided with a rotating rod 24, the rotating shaft 18 is arranged on the upper side of the support 19, and the rotating shaft 18 is rotationally matched with the driven bevel gear 16, and the support 19 is rotationally matched with the active bevel gear 17 through the rotating rod 24, and the rotating rod 24 is arranged on the outer side of the support 19;

[0051] In this embodiment, the rotating shaft 18 cooperates with the support 19 so that the driven bevel gear 16 can rotate about the same axis, and the setting of the rotating rod 24 is used to make the driving bevel gear 17 rotate along another axis, effectively improving the stability of the bevel gear set 10.

[0052] See also Fig. 9 The present invention also proposes a calibration method for a spherical near-field antenna measurement system, using the above-mentioned measurement system,

[0053] The calibration method comprises the following steps:

[0054] S101: Start the bevel gear set 10 to make the spherical array 1 rotate according to the demand until it turns to a predetermined direction;

[0055] S102: Start the driving frame 7, and adjust the height of the spherical array 1 in the frame 2 through the cooperation of the pump force and the bolt 13;

[0056] S103: After the height adjustment is completed, the telescopic arm 14 is started again, and the accommodating sleeve 20 is driven to move by the rotation of the coordinated roller sleeve 22, thereby achieving fine adjustment of the pitch angle of the spherical array 1, and completing the calibration of the measurement system.

[0057] In this embodiment, a correction method is proposed corresponding to the modification of the measurement system, and the cooperation between the driving frame 7 and the spherical frame 8 is utilized so that the orientation angle, height and pitch angle of the spherical array 1 can be modified as needed, so that the measurement system can be calibrated at any time, effectively improving the self-correction capability of the measurement system.

[0058] A spherical near-field antenna measurement system and correction method of the present invention improves the structure of the measurement system, utilizes the driving frame 7 to cooperate with the spherical frame 8, and changes the pitch angle of the spherical array 1 through the driving frame 7, thereby effectively expanding the receiving range of the spherical array 1, thereby effectively improving the use range of the spherical near-field antenna.

[0059] What is disclosed above is only a preferred embodiment of the present invention, and it certainly cannot be used to limit the scope of rights of the present invention. Ordinary technicians in this field can understand that all or part of the processes of the above embodiment and equivalent changes made according to the claims of the present invention still fall within the scope of the invention.

Claims

1. A spherical near-field antenna measurement system, characterized in that: The spherical near-field antenna measurement system comprises a spherical array, a frame and a correction piece, wherein the spherical array is arranged on the upper side of the frame and cooperates with the frame, and the correction piece is arranged on the lower side of the frame and rotatably cooperates with the frame; the correction piece realizes the adjustment of the orientation angle of the spherical array; The skeleton includes a plurality of drive frames and a spherical frame with a plurality of grooves, the spherical frame fits with the spherical array through the plurality of grooves, and the spherical frame is fixedly connected to the correction member, the plurality of drive frames are rotatably connected to the spherical array, and the plurality of drive frames penetrate the grooves and are fixedly connected to the correction member; the drive frames are used to adjust the pitch angle of the spherical array; Each of the driving frames comprises a pump chamber, a bolt, a telescopic arm and a stabilizing seat. The pump chamber is arranged on the upper side of the correction member and is fixedly connected to the correction member. The bolt is arranged on the upper side of the pump chamber and is matched with the pump chamber by injecting oil. The two ends of the telescopic arm are connected to the spherical array and the stabilizing seat. The stabilizing seat is arranged on the upper side of the bolt and is fixedly connected to the bolt. The pump chamber cooperates with the bolt and injects oil so that the bolt can change its height as needed to adjust the height of the spherical array. The spherical array includes a plurality of antenna plates, the number of the plurality of antenna plates is consistent with the number of the drive frames, and the plurality of antenna plates and the plurality of drive frames are arranged in a one-to-one correspondence; the spherical array is also provided with a thermal insulation cover and a heating block, the heating block is arranged at the bottom of the antenna plate and is used to heat the antenna plate, the thermal insulation cover covers the heating block, and a drainage hole is provided at the bottom of the thermal insulation cover.

2. A spherical near-field antenna measurement system as claimed in claim 1, characterized in that: The telescopic arm is provided with a accommodating sleeve, a sliding arm, a matching roller sleeve and a guide cable. The accommodating sleeve is arranged on the lower side of the spherical array and is rotatably connected to the spherical array. The sliding arm is arranged on the inner side of the accommodating sleeve, and the sliding arm is slidably connected to the accommodating sleeve through the matching roller sleeve. The guide cable is arranged on the outer surface of the sliding arm to cooperate with the accommodating sleeve for self-protection. The matching roller sleeves are arranged on both sides of the outside of the sliding arm, and the matching roller sleeves are rollingly matched with the accommodating sleeve.

3. A spherical near-field antenna measurement system as claimed in claim 2, characterized in that: The correction part includes a support plate, a bevel gear set and a limiting seat. The support plate is arranged on the lower side of the plurality of drive frames and is fixedly connected to the plurality of drive frames. The bevel gear set is arranged on the inner side of the limiting seat and is rotatably connected to the limiting seat. The bevel gear set is fixedly matched with the support plate.

4. A spherical near-field antenna measurement system as claimed in claim 3, characterized in that: The bevel gear set includes a driven bevel gear and a driving bevel gear. The driving bevel gear is externally connected to a motor to drive the driven bevel gear to rotate. The driven bevel gear is arranged at the center of the support plate and is also rotatably connected to the limiting seat.

5. A calibration method for a spherical near-field antenna measurement system, using the measurement system as claimed in claim 4, characterized in that: The calibration method comprises the following steps: Start the bevel gear set to make the spherical array rotate according to the demand until it turns to the predetermined direction; Start the driving frame and adjust the height of the spherical array in the frame through the cooperation between the pump cavity and the bolt; After the height adjustment is completed, the telescopic arm is started again, and the accommodating sleeve is driven to move by the rotation of the coordinated roller sleeve, thereby achieving fine adjustment of the pitch angle of the spherical array, and then completing the calibration of the measurement system.

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