Antenna efficiency measuring device

Abstract

The invention relates to the technical field of electromagnetic fields, and discloses an antenna efficiency measuring device which comprises a measuring substrate and a carrying plate, a multi-dimensional measuring mechanism is arranged outside a supporting frame and comprises a multi-dimensional receiving frame, an adjusting rotating shaft, a probe, a laser calibrator and a rotating gear, and a distance adjusting mechanism is arranged outside a limiting plate. The distance adjusting mechanism comprises a distance adjusting motor, a total moving gear, a distance adjusting base, a third transmission gear, a distance adjusting threaded rod and a staggered transmission belt, the end, away from a buffering rotating shaft, of a buffering torsional spring is fixedly connected to the exterior of a threaded cylinder, a guiding wing is fixedly connected to the exterior of a carrying plate, a guiding groove is formed in the exterior of the guiding wing, and a carrying table is fixedly connected to the top of the carrying plate. According to the invention, through the above structure, measurement states can be converted, and in a process of adjusting a measurement distance, the antenna can be ensured to move slowly, and inclination of the antenna caused by inertia can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of electromagnetic fields, and in particular to an antenna efficiency measuring device. Background Art

[0002] Antenna efficiency refers to the ratio of the power radiated by the antenna (i.e. the power of the electromagnetic wave part that is effectively converted) to the active power input to the antenna. It is a value that is always less than 1. Antenna efficiency is generally defined as the ratio of the antenna's radiated power to its input power. Since antenna efficiency is the ratio of radiated power to input power, it naturally links the directivity coefficient to gain.

[0003] In the existing antenna efficiency measurement device, the probe is movable but the measurement direction is fixed during plane measurement. It is difficult to achieve both plane and multi-dimensional measurements. After installing the gain horn, it is necessary to use tape to align the laser transmitter, the probe and the gain horn for calibration, which is time-consuming and labor-intensive. Herein, an antenna efficiency measurement device is proposed, which has the advantages of being able to switch measurement states, ensuring that the antenna moves slowly during the adjustment of the measurement distance, and preventing the antenna from tilting due to inertia. Summary of the invention

[0004] In view of the shortcomings of the prior art, the present invention provides an antenna efficiency measurement device, which has the advantages of being able to switch measurement states, ensuring that the antenna moves slowly during the adjustment of the measurement distance, and preventing the antenna from tilting due to inertia.

[0005] To achieve the above object, the present invention provides the following technical solutions:

[0006] An antenna efficiency measuring device comprises a measuring substrate and a carrier plate, wherein the measuring substrate is fixedly connected to a support frame on the outside, a flip motor is fixedly connected to the outside of the support frame, a second transmission gear is fixedly connected to the end of the flip motor transmission shaft, a multidimensional measuring mechanism is arranged on the outside of the support frame, and the multidimensional measuring mechanism comprises a multidimensional receiving frame, an adjusting shaft, a probe, a laser calibrator and a rotating gear, the measuring substrate is fixedly connected to a limit plate on the outside, a distance adjustment mechanism is arranged on the outside of the limit plate, the distance adjustment mechanism comprises a distance adjustment motor, a total moving gear, a distance adjustment base, a third transmission gear, a distance adjustment threaded rod and a staggered transmission belt, the carrier plate is fixedly connected to a threaded barrel on the outside, a buffer shaft is movably connected to the inside of the threaded barrel, a buffer torsion spring is fixedly connected to the outside of the buffer shaft, one end of the buffer torsion spring away from the buffer shaft is fixedly connected to the outside of the threaded barrel, the carrier plate is fixedly connected to a guide wing on the outside, a guide groove is arranged on the outside of the guide wing, the carrier plate is fixedly connected to a carrier platform on the top, and a support column is fixedly connected to the carrier platform on the top.

[0007] Preferably, the rotating gear is fixedly connected to the outside of the supporting frame, the multidimensional receiving frame is fixedly connected to the outside of the rotating gear, the adjusting shaft is fixedly connected to the outside of the multidimensional receiving frame, the probe is fixedly connected to the outside of the adjusting shaft, the laser calibrator is fixedly connected to the outside of the probe, the rotating gears are in multiple groups and are symmetrically distributed outside the multidimensional receiving frame, the supporting frames are in multiple groups and are symmetrically distributed outside the measuring substrate, the adjusting shafts are in multiple groups and are evenly distributed outside the multidimensional receiving frame, and the rotating gear is meshingly connected to the second transmission gear.

[0008] Preferably, the pitch adjusting motor is fixedly connected to the outside of the limit plate, the total moving gear is fixedly connected to the end of the pitch adjusting motor transmission shaft, the pitch adjusting base is fixedly connected to the outside of the limit plate, the third transmission gear is movably connected to the outside of the pitch adjusting base, the pitch adjusting threaded rod is fixedly connected to the outside of the third transmission gear, the staggered transmission belt is movably connected to the outside of the total moving gear and the third transmission gear, the limit plates are multiple groups and are symmetrically distributed outside the measuring substrate, the distance adjusting bases are multiple groups and are symmetrically distributed outside the limit plate, and the staggered transmission belts are multiple groups and are staggeredly distributed outside the total moving gear and the third transmission gear.

[0009] Preferably, a conversion motor is fixedly connected inside the carrier platform, a first transmission gear is fixedly connected to the end of a transmission shaft of the conversion motor, a support plate is fixedly connected inside the carrier platform, a conversion gear is movably connected to the top of the support plate, the conversion gear is fixedly connected to a mounting platform outside, a mounting plate is fixedly connected to the outside of the mounting platform, and a conversion transmission belt is movably connected between the conversion gear and the first transmission gear.

[0010] Preferably, a polyurethane absorbing cone is fixedly connected to the outside of the measuring substrate, and a carrying guide rail is fixedly connected to the outside of the measuring substrate. There are multiple groups of polyurethane absorbing cones and they are evenly distributed outside the measuring substrate, and there are multiple groups of carrying guide rails and they are symmetrically distributed outside the measuring substrate. During the measurement process, the polyurethane absorbing cones can absorb reflected electromagnetic waves, reduce the electromagnetic waves reflected to the probe, and greatly improve the measurement accuracy.

[0011] Preferably, an adjustment groove is provided on the outside of the support column, and the adjustment groove is movably connected to the mounting platform.

[0012] Preferably, a reflection platform is fixedly connected between the carrier platform and the support column. During the measurement process, the reflection platform can reflect electromagnetic waves in the vertical direction to the horizontal direction of the device, reducing the electromagnetic waves reflected to the probe, thereby greatly improving the accuracy of the measurement.

[0013] Preferably, there are multiple groups of guide wings and they are symmetrically distributed outside the carrier plate. The guide wings are movably connected to the guide grooves. During the plane measurement process, the guide grooves outside the guide wings move outside the carrier guide rails. Under the guidance of the carrier guide rails, the carrier plate can be moved in a straight line, thereby reducing errors caused by movement and greatly improving the accuracy of the device.

[0014] Beneficial effects:

[0015] 1. The antenna efficiency measurement device can switch the measurement state through a multi-dimensional measurement mechanism, which greatly improves the flexibility of the device.

[0016] 2. The antenna efficiency measuring device can ensure the slow movement of the antenna during the adjustment of the measuring distance through the distance adjustment mechanism, thereby preventing the antenna from tilting due to inertia, and greatly improving the stability of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the first overall structure of the present invention;

[0018] Figure 2 It is a schematic diagram of the second overall structure of the present invention;

[0019] Figure 3 It is a schematic diagram of the third overall structure of the present invention;

[0020] Figure 4 It is a schematic diagram of the fourth overall structure of the present invention;

[0021] Figure 5 It is a fifth overall structural schematic diagram of the present invention;

[0022] Figure 6 This is a schematic diagram of the structure of the first part of the present invention;

[0023] Figure 7 This is a schematic diagram of the structure of the second part of the present invention;

[0024] Figure 8 for Figure 1 A schematic diagram of the structure enlargement in the middle;

[0025] Fig. 9 for Figure 5 Enlarged schematic diagram of the structure at point B in the middle.

[0026] In the figure: 1. measuring substrate; 2. carrier plate; 3. multi-dimensional receiving frame; 4. support frame; 5. polyurethane absorbing cone; 6. carrier guide rail; 7. limit plate; 8. pitch-adjusting motor; 9. flip motor; 10. carrier platform; 11. reflecting platform; 12. support column; 13. adjusting groove; 14. mounting platform; 15. mounting plate; 16. conversion gear; 17. support plate; 18. conversion transmission belt; 19. conversion motor; 20. first transmission gear; 21. guide wing; 22. guide groove; 23. threaded barrel; 24. buffer torsion spring; 25. buffer shaft; 26. adjusting shaft; 27. probe; 28. laser calibrator; 29. ​​rotating gear; 30. second transmission gear; 31. total driving gear; 32. pitch-adjusting base; 33. third transmission gear; 34. pitch-adjusting threaded rod; 35. offset transmission belt. DETAILED DESCRIPTION

[0027] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0028] Embodiment 1

[0029] See also Figure 1-9 , an antenna efficiency measuring device, including a measuring substrate 1 and a carrier plate 2, the measuring substrate 1 is fixedly connected to a support frame 4 on the outside, the support frame 4 is fixedly connected to a flip motor 9 on the outside, the end of the transmission shaft of the flip motor 9 is fixedly connected to a second transmission gear 30, a multi-dimensional measuring mechanism is arranged outside the support frame 4, the multi-dimensional measuring mechanism includes a multi-dimensional receiving frame 3, an adjustment shaft 26, a probe 27, a laser calibrator 28 and a rotating gear 29, the measuring substrate 1 is fixedly connected to a limit plate 7 on the outside, the limit plate 7 is arranged on the outside of the distance adjustment mechanism, the distance adjustment mechanism includes a distance adjustment motor 8, a total driving gear 31, a pitch-adjusting base 32, a third transmission gear 33, a pitch-adjusting threaded rod 34 and a staggered transmission belt 35, a threaded barrel 23 is fixedly connected to the outside of the carrier plate 2, a buffer shaft 25 is movably connected to the inside of the threaded barrel 23, a buffer torsion spring 24 is fixedly connected to the outside of the buffer shaft 25, one end of the buffer torsion spring 24 away from the buffer shaft 25 is fixedly connected to the outside of the threaded barrel 23, a guide wing 21 is fixedly connected to the outside of the carrier plate 2, a guide groove 22 is provided on the outside of the guide wing 21, a carrier platform 10 is fixedly connected to the top of the carrier plate 2, and a support column 12 is fixedly connected to the top of the carrier platform 10;

[0030] Among them: the rotating gear 29 is fixedly connected to the outside of the support frame 4, the multidimensional receiving frame 3 is fixedly connected to the outside of the rotating gear 29, the adjusting shaft 26 is fixedly connected to the outside of the multidimensional receiving frame 3, the probe 27 is fixedly connected to the outside of the adjusting shaft 26, the laser calibrator 28 is fixedly connected to the outside of the probe 27, the rotating gears 29 are in multiple groups and are symmetrically distributed outside the multidimensional receiving frame 3, the supporting frames 4 are in multiple groups and are symmetrically distributed outside the measuring substrate 1, the adjusting shafts 26 are in multiple groups and are evenly distributed outside the multidimensional receiving frame 3, the rotating gear 29 is meshedly connected with the second transmission gear 30, the measuring substrate 1 is fixedly connected to the outside with a polyurethane absorbing cone 5, the measuring substrate 1 is fixedly connected to the outside with a carrying guide rail 6, the polyurethane absorbing cone 5 is in multiple groups and is evenly distributed outside the measuring substrate 1, the carrying guide rail 6 is in multiple groups and is symmetrically distributed outside the measuring substrate 1, and the support column 12 is provided with an adjusting groove 13 on the outside, and the adjusting groove 13 is movably connected to the mounting platform 14.

[0031] In this embodiment, if plane measurement is required, it is only necessary to rotate and drive the total moving gear 31, the total moving gear 31 rotates and drives the offset transmission belt 35, the offset transmission belt 35 rotates and drives the third transmission gear 33, the third transmission gear 33 rotates and drives the pitch-adjusting threaded rod 34, the pitch-adjusting threaded rod 34 rotates and drives the buffer shaft 25 to move, the buffer shaft 25 moves and drives the buffer torsion spring 24, the buffer torsion spring 24 compresses and drives the threaded cylinder 23, and then adjusts the distance between the carrier plate 2 and the multi-dimensional receiving frame 3. If multi-dimensional measurement is required, the conversion motor 19 is turned on, the conversion motor 19 rotates and drives the first transmission gear 20, the first transmission gear 20 rotates and drives the conversion transmission belt 18, the conversion transmission belt 18 rotates and drives the conversion gear 16, the conversion gear 16 rotates and drives the mounting platform 14, after the mounting plate 15 outside the mounting platform 14 is rotated to a vertical orientation, the gain horn is installed between the mounting platform 14 and the mounting plate 15, the pitch-adjusting motor 8 is turned on and drives the total moving gear 31, the total gear 31 rotates and drives the offset transmission belt 35, the offset transmission belt 35 rotates to drive the third transmission gear 33, the third transmission gear 33 rotates to drive the pitch-adjusting threaded rod 34, the pitch-adjusting threaded rod 34 rotates to drive the buffer shaft 25 to move, the buffer shaft 25 moves to drive the buffer torsion spring 24, the buffer torsion spring 24 is compressed to drive the threaded cylinder 23, the threaded cylinder 23 drives the carrier plate 2 to move, after the carrier plate 2 moves to the convergence position of the laser calibrator 28, multi-dimensional measurement can be performed, similarly, if it is necessary to convert to plane measurement, the above operation needs to be reversed, and the mounting table 14 is stuck on the outside of the adjustment slot 13. During the measurement process, the polyurethane absorbing cone 5 can absorb the reflected electromagnetic waves and reduce the electromagnetic waves reflected to the probe 27, which greatly improves the measurement accuracy. During the measurement process, the reflection table 11 can reflect the electromagnetic waves in the vertical direction to the horizontal direction of the device, reduce the electromagnetic waves reflected to the probe 27, and greatly improve the measurement accuracy. At this point, the measurement state can be converted through the multi-dimensional measurement mechanism, which greatly improves the flexibility of the device.

[0032] Embodiment 2

[0033] See also Figure 1-9, further on the basis of the first embodiment, the pitch-adjusting motor 8 is fixedly connected to the outside of the limit plate 7, the total moving gear 31 is fixedly connected to the end of the transmission shaft of the pitch-adjusting motor 8, the pitch-adjusting base 32 is fixedly connected to the outside of the limit plate 7, the third transmission gear 33 is movably connected to the outside of the pitch-adjusting base 32, the pitch-adjusting threaded rod 34 is fixedly connected to the outside of the third transmission gear 33, the staggered transmission belt 35 is movably connected to the outside of the total moving gear 31 and the third transmission gear 33, the number of the limit plates 7 is multiple groups and symmetrically distributed outside the measuring substrate 1, the number of the pitch-adjusting bases 32 is multiple groups and symmetrically distributed outside the limit plate 7, the number of the staggered transmission belts 35 is multiple groups and staggeredly distributed between the total moving gear 31 and the third transmission gear 33 The outside of the transmission gear 33 and the inside of the carrier platform 10 are fixedly connected with a conversion motor 19, the end of the transmission shaft of the conversion motor 19 is fixedly connected with the first transmission gear 20, the inside of the carrier platform 10 is fixedly connected with a support plate 17, the top of the support plate 17 is movably connected with a conversion gear 16, the outside of the conversion gear 16 is fixedly connected with a mounting platform 14, the outside of the mounting platform 14 is fixedly connected with a mounting plate 15, the outside of the conversion gear 16 and the first transmission gear 20 are movably connected with a conversion transmission belt 18, a reflection platform 11 is fixedly connected between the carrier platform 10 and the support column 12, there are multiple groups of guide wings 21 and they are symmetrically distributed on the outside of the carrier plate 2, and the guide wings 21 are movably connected with the guide grooves 22.

[0034] In this embodiment, when performing planar efficiency measurement, if near-field measurement is required, the pitch-adjusting motor 8 is turned on to rotate and drive the total moving gear 31, the total moving gear 31 rotates to drive the offset transmission belt 35, the offset transmission belt 35 rotates to drive the third transmission gear 33, the third transmission gear 33 rotates to drive the pitch-adjusting threaded rod 34, the pitch-adjusting threaded rod 34 rotates to drive the buffer shaft 25 to move, the buffer shaft 25 moves to drive the buffer torsion spring 24, the buffer torsion spring 24 is compressed to drive the threaded cylinder 23, the threaded cylinder 23 moves to drive the carrier plate 2 to move in the direction close to the multi-dimensional receiving frame 3, the laser calibrator 28 is turned on, and after the carrier plate 2 moves to the convergence position of the laser calibrator 28 , place the amplifier speaker between the mounting platform 14 and the mounting plate 15, and then you can perform near-field measurement. If you need to perform far-field measurement, you need to reverse the above operation. After the carrier plate 2 moves to the predetermined position, you can start the far-field measurement. During the plane measurement process, the guide groove 22 outside the guide wing 21 moves outside the carrier guide rail 6. Under the guidance of the carrier guide rail 6, it is ensured that the carrier plate 2 can move in a straight line direction, reducing the error caused by the movement, greatly improving the accuracy of the device, and thus completing the distance adjustment mechanism. During the adjustment of the measurement distance, it can ensure that the antenna moves slowly to prevent the antenna from tilting due to inertia, which greatly improves the stability of the device.

[0035] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An antenna efficiency measuring device, comprising a measuring substrate (1) and a carrier plate (2), characterized in that: The measuring substrate (1) is fixedly connected to a support frame (4) on the outside, and a flip motor (9) is fixedly connected to the outside of the support frame (4). The end of the transmission shaft of the flip motor (9) is fixedly connected to a second transmission gear (30). A multi-dimensional measuring mechanism is arranged on the outside of the supporting frame (4). The multi-dimensional measuring mechanism comprises a multi-dimensional receiving frame (3), an adjusting shaft (26), a probe (27), a laser calibrator (28) and a rotating gear (29). The measuring substrate (1) is fixedly connected to a limit plate (7) on the outside, and a distance adjustment mechanism is arranged on the outside of the limit plate (7). The distance adjustment mechanism comprises a distance adjustment motor (8), a total gear (31), a distance adjustment base (32), and a third transmission gear (29). The carrier plate (2) is provided with a threaded cylinder (23) fixedly connected to the outside of the carrier plate (2), and a buffer shaft (25) is movably connected to the inside of the threaded cylinder (23). The buffer shaft (25) is fixedly connected to the outside of the buffer torsion spring (24), and one end of the buffer torsion spring (24) away from the buffer shaft (25) is fixedly connected to the outside of the threaded cylinder (23). The carrier plate (2) is fixedly connected to the outside of the guide wing (21), and a guide groove (22) is provided on the outside of the guide wing (21). The top of the carrier plate (2) is fixedly connected to a carrier platform (10), and the top of the carrier platform (10) is fixedly connected to a support column (12).

2. The antenna efficiency measurement device according to claim 1, characterized in that: The rotating gear (29) is fixedly connected to the outside of the support frame (4), the multi-dimensional receiving frame (3) is fixedly connected to the outside of the rotating gear (29), the adjusting shaft (26) is fixedly connected to the outside of the multi-dimensional receiving frame (3), the probe (27) is fixedly connected to the outside of the adjusting shaft (26), the laser calibrator (28) is fixedly connected to the outside of the probe (27), the rotating gears (29) are provided in multiple groups and are symmetrically distributed on the outside of the multi-dimensional receiving frame (3), the supporting frames (4) are provided in multiple groups and are symmetrically distributed on the outside of the measuring substrate (1), the adjusting shafts (26) are provided in multiple groups and are evenly distributed on the outside of the multi-dimensional receiving frame (3), and the rotating gear (29) is meshingly connected to the second transmission gear (30).

3. The antenna efficiency measurement device according to claim 1, characterized in that: The pitch-adjusting motor (8) is fixedly connected to the outside of the limit plate (7); the total gear (31) is fixedly connected to the end of the transmission shaft of the pitch-adjusting motor (8); the pitch-adjusting base (32) is fixedly connected to the outside of the limit plate (7); the third transmission gear (33) is movably connected to the outside of the pitch-adjusting base (32); the pitch-adjusting threaded rod (34) is fixedly connected to the outside of the third transmission gear (33); the staggered transmission belt (35) is movably connected to the outside of the total gear (31) and the outside of the third transmission gear (33); the limit plates (7) are provided in a plurality of groups and are symmetrically distributed on the outside of the measuring substrate (1); the pitch-adjusting bases (32) are provided in a plurality of groups and are symmetrically distributed on the outside of the limit plate (7); and the staggered transmission belts (35) are provided in a plurality of groups and are staggeredly distributed on the outside of the total gear (31) and the outside of the third transmission gear (33).

4. The antenna efficiency measurement device according to claim 1, characterized in that: The carrier platform (10) is fixedly connected to a conversion motor (19) inside, and the end of the transmission shaft of the conversion motor (19) is fixedly connected to a first transmission gear (20). The carrier platform (10) is fixedly connected to a support plate (17) inside, and the top of the support plate (17) is movably connected to a conversion gear (16). The conversion gear (16) is fixedly connected to a mounting platform (14) outside, and the mounting platform (14) is fixedly connected to a mounting plate (15) outside. The conversion gear (16) and the first transmission gear (20) are movably connected to a conversion transmission belt (18) outside.

5. The antenna efficiency measurement device according to claim 1, characterized in that: The measuring substrate (1) is fixedly connected to the outside with a polyurethane absorbing cone (5), and the measuring substrate (1) is fixedly connected to the outside with a carrying guide rail (6), the polyurethane absorbing cones (5) are provided in multiple groups and are evenly distributed outside the measuring substrate (1), and the carrying guide rails (6) are provided in multiple groups and are symmetrically distributed outside the measuring substrate (1).

6. The antenna efficiency measurement device according to claim 4, characterized in that: An adjustment groove (13) is provided on the outside of the support column (12), and the adjustment groove (13) is movably connected to the mounting platform (14).

7. The antenna efficiency measurement device according to claim 1, characterized in that: A reflection platform (11) is fixedly connected between the carrier platform (10) and the support column (12).

8. The antenna efficiency measurement device according to claim 1, characterized in that: The guide wings (21) are provided in multiple groups and are symmetrically distributed outside the carrier plate (2). The guide wings (21) are movably connected to the guide grooves (22).

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