CN107290600B - High-precision antenna indoor field test system and test platform thereof - Google Patents
High-precision antenna indoor field test system and test platform thereof Download PDFInfo
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- CN107290600B CN107290600B CN201710540328.6A CN201710540328A CN107290600B CN 107290600 B CN107290600 B CN 107290600B CN 201710540328 A CN201710540328 A CN 201710540328A CN 107290600 B CN107290600 B CN 107290600B
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- 238000012360 testing method Methods 0.000 title claims abstract description 103
- 239000003638 chemical reducing agent Substances 0.000 claims description 36
- 238000009434 installation Methods 0.000 claims description 8
- 230000010287 polarization Effects 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000008901 benefit Effects 0.000 description 2
- 238000005388 cross polarization Methods 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 230000007547 defect Effects 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R29/00—Arrangements for measuring or indicating electric quantities not covered by groups G01R19/00 - G01R27/00
- G01R29/08—Measuring electromagnetic field characteristics
- G01R29/10—Radiation diagrams of antennas
- G01R29/105—Radiation diagrams of antennas using anechoic chambers; Chambers or open field sites used therefor
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Abstract
The invention discloses a test platform, which comprises a base station, a first rotary table and a second rotary table, wherein the first rotary table is arranged on the base station; the base station is provided with a rotating mechanism capable of horizontally rotating on the X-Y axis plane, the first rotating table is arranged on the rotating mechanism, and the second rotating table is fixedly arranged on the base station; the first turntable can horizontally rotate on an X-Y axis plane by virtue of a rotating mechanism, when the first turntable rotates to a first position, the first turntable is aligned with the second turntable to form a signal testing path with a first testing distance, and when the first turntable rotates to a second position, the first turntable is aligned with a third turntable outside to form a signal testing path with a second testing distance; the first turntable may selectively serve as a transmitting end or a receiving end, and the second turntable may selectively serve as a receiving end or a transmitting end, respectively. The invention also discloses a high-precision antenna indoor field test system. Through the embodiment, the signal testing path can be rapidly switched to carry out far-field test on antennas with different wavelengths, and the device is simple in structure, convenient and efficient to operate.
Description
Technical Field
The invention relates to the technical field of communication test equipment, in particular to a high-precision antenna indoor field test system and a test platform thereof.
Background
The existing antenna indoor field test system mainly comprises a transmitting device and a receiving device, when far field test is carried out between the transmitting device and the receiving device, when the antenna with smaller wavelength is measured and the antenna with larger wavelength is measured, one or both of the transmitting device and the receiving device are required to be moved, so that frequent movement is required, the moving distance is large, and the test efficiency is low.
Disclosure of Invention
The invention provides a high-precision antenna indoor field test system and a test platform thereof, which can rapidly switch signal test paths to perform far-field test on antennas with different wavelengths, and have the advantages of simple structure, convenient operation and high efficiency.
In order to solve the above technical problems, the present invention provides a test platform, including: the device comprises a base station, a first rotary table and a second rotary table; the base station is provided with a rotating mechanism capable of horizontally rotating on an X-Y axis plane, the first rotating table is arranged on the rotating mechanism, and the second rotating table is fixedly arranged on the base station; the first turntable can horizontally rotate on an X-Y axis plane by virtue of the rotating mechanism, when the first turntable rotates to a first position, the first turntable is aligned with the second turntable to form a signal testing path with a first testing distance, and when the first turntable rotates to a second position, the first turntable is aligned with an external third turntable to form a signal testing path with a second testing distance; the first turntable can be selectively used as a transmitting end or a receiving end, and correspondingly, the second turntable can be selectively used as a receiving end or a transmitting end.
Further, a first linear moving mechanism capable of moving in the X-axis direction is arranged between the rotating mechanism and the first rotating table, the first linear moving mechanism is supported and fixed on the rotating mechanism, the first rotating table is supported and fixed on the first linear moving mechanism, and by means of rotation of the rotating mechanism in an X-Y axis plane, the first linear moving mechanism can move to any position of the X-Y axis plane, and then the first rotating table is driven to move to any position of the X-Y axis plane.
Further, a second linear moving mechanism capable of moving in the Z-axis direction is supported and fixed on the first linear moving mechanism, and the first turntable is supported and fixed on the second linear moving mechanism, so that the first turntable can move in the Z-axis direction under the drive of the second linear moving mechanism.
Further, the first linear moving mechanism comprises a first supporting plate, a first ball screw rotatably connected to the first supporting plate, a first nut sliding block sleeved on the first ball screw and a first servo motor linked with the first ball screw; the second linear movement mechanism comprises a second supporting plate, a second ball screw rotatably connected to the second supporting plate, a second nut sliding block sleeved on the second ball screw and a second servo motor linked with the second ball screw; the rotating mechanism comprises a supporting seat arranged on the base station, a third servo motor arranged in the supporting seat, and a first speed reducer with an input shaft connected with an output shaft of the third servo motor; the output shaft of the first speed reducer is supported and fixed on the first supporting plate, the first nut sliding block is supported and fixed on the second supporting plate, and the second nut sliding block is connected and fixed on the first rotary table.
Further, the first rotating table comprises a first mounting seat, a first rotating unit and a first mounting disc; the first mounting seat is supported and fixed on the second linear moving mechanism, the first rotating unit is supported and fixed on the first mounting seat and can rotate on a plane perpendicular to the X-Y axis plane, and the first rotating unit is fixedly connected with the first mounting disc so as to drive the first mounting disc to rotate on the plane perpendicular to the X-Y axis plane; the second turntable comprises a second mounting seat, a second rotating unit and a second mounting disc; the second installation seat is supported and fixed on a bracket connected with the base station, the second rotation unit is supported and fixed on the second installation seat and can rotate on a plane perpendicular to the X-Y axis plane, and the second rotation unit is fixedly connected with the second installation disc so as to drive the second installation disc to rotate on the plane perpendicular to the X-Y axis plane.
Further, the first rotating unit comprises a fourth servo motor and a second speed reducer, an input shaft of the second speed reducer is connected with an output shaft of the fourth servo motor, the fourth servo motor is fixedly arranged on the first mounting seat, and an output shaft of the second speed reducer is connected with the first mounting disc; the second rotating unit comprises a fifth servo motor and a third speed reducer, an input shaft of the third speed reducer is connected with an output shaft of the fifth servo motor, the fifth servo motor is fixedly arranged on the second mounting seat, and an output shaft of the third speed reducer is connected with the second mounting disc.
Further, a third linear movement mechanism capable of moving in the X-axis direction is arranged on the base, and the rotating mechanism is supported and fixed on the third linear movement mechanism; the third linear moving mechanism comprises a linear guide rail and a sliding block which is arranged on the linear guide rail and moves on the linear guide rail, and the rotating mechanism is arranged on the sliding block.
Further, the first test distance is 600mm or less, and the second test distance is 600mm or more.
Further, the base bottom is provided with a plurality of height-adjustable support portions for adjusting the balance of the base.
In order to solve the technical problems, the invention also provides a high-precision antenna indoor field testing system, which comprises the testing platform with the base station, the first turntable and the second turntable and also comprises a third turntable according to any one of the embodiments; the base station is provided with a rotating mechanism capable of horizontally rotating on an X-Y axis plane, the first rotating table is arranged on the rotating mechanism, and the second rotating table is fixedly arranged on the base station; the first turntable can horizontally rotate on an X-Y axis plane by virtue of the rotating mechanism, when the first turntable rotates to a first position, the first turntable is aligned with the second turntable to form a signal testing path with a first testing distance, and when the first turntable rotates to a second position, the first turntable is aligned with the third turntable to form a signal testing path with a second testing distance; the first turntable can be selectively used as a transmitting end or a receiving end, the second turntable can be selectively used as a receiving end or a transmitting end correspondingly, and the third turntable can be selectively used as a receiving end or a transmitting end.
The high-precision antenna indoor field testing system and the testing platform thereof have the following beneficial effects:
through setting up first revolving stage and second revolving stage on same base station, and first revolving stage can rotate to first position and aim at the second revolving stage and constitute the signal test route that has first test distance all the way, perhaps rotate to the outside third revolving stage of second position and constitute the signal test route that has the second test distance all the way, can switch the signal test route fast in order to carry out far field to the antenna of different wavelength and try in order to carry out, its simple structure, convenient operation is high-efficient.
Drawings
Fig. 1 is a schematic structural diagram of a high-precision antenna indoor field testing system according to an embodiment of the present invention.
Fig. 2 is a side cross-sectional view of a test platform in the high-precision antenna room field test system of fig. 1.
Fig. 3 is a top view of a test platform in the high-precision antenna room field test system of fig. 1.
Fig. 4 is a schematic structural diagram of a third turntable in the high-precision antenna indoor field testing system shown in fig. 1.
Fig. 5 is a sectional view taken along B-B of fig. 4.
Detailed Description
The present invention will be described in detail with reference to the drawings and embodiments.
Referring to fig. 1 to 3, the present invention provides a high-precision antenna indoor field testing system, which is often placed in a darkroom 2 during testing. The high-precision antenna indoor field testing system comprises a testing platform 1 with a base 11, a first turntable 12 and a second turntable 13, and further comprises a third turntable 3.
Specifically, in the test platform 1: the base 11 is provided with a rotating mechanism 14 which can horizontally rotate on an X-Y axis plane, the first rotary table 12 is arranged on the rotating mechanism 14, and the second rotary table 13 is fixedly arranged on the base 11. During testing, the first turntable 12 can horizontally rotate on the X-Y axis plane by means of the rotating mechanism 14, for example, when the first turntable 12 rotates to a first position, the first turntable 12 aligns with the second turntable 13 to form a signal testing path with a first testing distance; when the first turntable 12 rotates to the second position, the third turntable 3 with the first turntable 12 aligned to the outside forms a signal test path with the second test distance.
The first test distance may be generally smaller than the second test distance, for example, in an embodiment, the first test distance is less than or equal to 600mm, and the second test distance is greater than 600mm, which may be set as other test distances according to the requirements. Compared with the traditional high-precision antenna indoor field testing system which only has one set of transmitting end and one set of receiving end, the traditional architecture is not suitable for testing various millimeter wave antennas, and the testing platform 1 with the first turntable 12 and the second turntable 13 and the third turntable 3 positioned outside the testing platform 1 are adopted, so that the testing system is equivalent to the far field of communication between two subsystems, can meet the testing of high-gain and low-gain microwave and millimeter wave antennas, and relatively flexibly overcomes some defects of the traditional scheme.
In a preferred embodiment, a first linear movement mechanism 15 capable of moving in the X-axis direction is disposed between the rotating mechanism 14 and the first turntable 12, the first linear movement mechanism 15 is supported and fixed on the rotating mechanism 14, the first turntable 12 is supported and fixed on the first linear movement mechanism 15, and the first linear movement mechanism 15 can move to any position of the X-Y axis plane by means of rotation of the rotating mechanism 14 in the X-Y axis plane, that is, the first linear movement mechanism 15 can move to any position of the X-axis direction and the Y-axis direction under the cooperation of the rotating mechanism 14, so as to drive the first turntable 12 to move to any position of the X-Y axis plane. The first turret 12 may be selectively aligned with either the second turret 13 or the third turret 3 by rotation in the X-Y axis plane. And, the movement accuracy of the first linear-motion mechanism 15 may be set to 0.02mm, the resolution is 0.01mm or less to ensure the accuracy of its movement, and the adjustment speed may be set to 0.05mm to 10mm/s.
In a preferred embodiment, the first linear moving mechanism 15 is supported and fixed with a second linear moving mechanism 16 capable of moving in the Z-axis direction, and the first turntable 12 is supported and fixed on the second linear moving mechanism 16, so that the first turntable 12 can move in the Z-axis direction under the driving of the second linear moving mechanism 16. The movement in the Z-axis direction by the second linear movement mechanism 16 is provided for better alignment of the second turntable 13 or the third turntable 3 in the height direction. The movement accuracy of the second linear-motion mechanism 16 may be set to 0.02mm and the resolution to 0.01mm or less to ensure the accuracy of the movement thereof, and the adjustment speed thereof may be set to 0.05mm to 10mm/s.
In a specific embodiment, the first linear moving mechanism 15 includes a first support plate 151, a first ball screw 152 rotatably connected to the first support plate 151, a first nut slider 153 sleeved on the first ball screw 152, and a first servo motor 154 linked with the first ball screw 152, where the first servo motor 154 and the first ball screw 152 can be linked by a gear or a pulley combined with a belt. The second linear movement mechanism 16 includes a second support plate 161, a second ball screw 162 rotatably connected to the second support plate 161, a second nut slider 163 sleeved on the second ball screw 162, and a second servo motor 164 coupled to the second ball screw 162, wherein the second servo motor 164 and the second ball screw 162 can be coupled to each other by a gear or a pulley coupled to a belt. The rotation mechanism 14 includes a support base 140 disposed on the base 11, a third servo motor 141 disposed in the support base 140, and a first speed reducer 142 having an input shaft connected to an output shaft of the third servo motor 141. The output shaft of the first speed reducer 142 supports and fixes the first support plate 151, the first nut slider 153 supports and fixes the second support plate 161, and the second nut slider 163 is connected and fixed with the first turntable 12. Wherein, the rotating mechanism 14 can rotate within the range of 0-360 degrees, the adjusting precision of the rotating mechanism 14 is less than or equal to +/-0.005deg, the resolution is less than or equal to +/-0.002deg to ensure the precision, and the rotating speed of the rotating mechanism 14 is 0.05 deg/s-3.0 deg/s.
In a specific embodiment, the first turntable 12 includes a first mounting base 121, a first rotating unit 122, and a first mounting plate 123. The first mounting seat 121 is supported and fixed on the second linear moving mechanism 16, the first rotating unit 122 is supported and fixed on the first mounting seat 121 and can rotate on a plane perpendicular to the X-Y axis plane, and the first rotating unit 122 is fixedly connected with the first mounting plate 123 so as to drive the first mounting plate 123 to rotate on a plane perpendicular to the X-Y axis plane.
The second turntable 13 includes a second mount 131, a second rotating unit 132, and a second mounting disc 133. The second mounting base 131 is supported and fixed on a bracket 130 connected with the base 11, the second rotating unit 132 is supported and fixed on the second mounting base 131 and can rotate on a plane perpendicular to the X-Y axis plane, and the second rotating unit 132 is fixedly connected with the second mounting disc 133 so as to drive the second mounting disc 133 to rotate on a plane perpendicular to the X-Y axis plane.
The first rotating unit 122 includes a fourth servomotor 1221 and a second speed reducer (not shown) with an input shaft connected to an output shaft of the fourth servomotor 1221, where the fourth servomotor 1221 is mounted and fixed on the first mounting base 121, and an output shaft of the second speed reducer is connected to the first mounting disc 123; the second rotating unit 132 includes a fifth servomotor 1321 and a third speed reducer (not shown) having an input shaft connected to an output shaft of the fifth servomotor 1321, the fifth servomotor 1321 is mounted and fixed on the second mounting base 131, and an output shaft of the third speed reducer is connected to the second mounting plate 133.
With the cooperation of the first rotation unit 122 and the second rotation unit 132, polarization adjustment of an object to be measured such as an antenna can be achieved. Wherein, the first rotating unit 122 and/or the second rotating unit 132 can rotate within the range of 0 degree to 360 degrees, the adjusting precision is less than or equal to +/-0.005deg, the resolution is less than or equal to +/-0.002deg to ensure the precision, and the rotating speed is 0.05deg/s to 3.0deg/s.
In a preferred embodiment, the base 11 may further be provided with a third linear movement mechanism 17 movable in the X-axis direction, and the rotation mechanism 14 is supported and fixed on the third linear movement mechanism 17. The third linear moving mechanism 17 includes a linear guide rail 171 and a slider 172 mounted on the linear guide rail 171 and moving on the linear guide rail 171, the rotating mechanism 14 is mounted on the slider 172, specifically, the support base 140 of the rotating mechanism 14 is mounted on the slider 172, and the third servo motor 141 and the first speed reducer 142 pass through the slider 172, the support base 140 and are connected to the first support plate 151 of the first linear moving mechanism 15. For example, the movement stroke of the third linear-motion mechanism 17 may be set to 1000mm, and the movement stroke of the first linear-motion mechanism 15 and/or the second linear-motion mechanism 16 may be set to 400mm. When the first linear moving mechanism 15 and the third linear moving mechanism 17 are arranged in the same direction, the third linear moving mechanism 17 can be manually adjusted to realize quick rough adjustment, and then the first linear moving mechanism 15 is combined for fine adjustment, so that the required first test distance is reached.
In a specific embodiment, a plurality of height-adjustable support portions 18 for adjusting the balance of the base 11 may be provided at the bottom of the base 11.
Referring to fig. 4 and 5, the third turntable 3 may have a triaxial motion capability, and correspondingly may implement functions of polarization, pitching, and downward direction adjustment, so as to measure multiple parameters of an object to be measured, such as an antenna. Specifically, the third turntable 3 includes: the base 31, a support 32 rotatably connected to the base 31 and having a pair of oppositely disposed side walls, and mounting seats 33 rotatably connected to both side walls of the support 32. Specifically, a first servo motor 311 and a first speed reducer 312 are disposed in the base 31, an input shaft of the first speed reducer 312 is connected with an output shaft of the first servo motor 311, an output shaft of the first speed reducer 312 is connected with the support 32, and the first servo motor 311 rotates to drive the first speed reducer 312 to rotate so that the support 32 can rotate along with the output shaft of the first speed reducer 312 and then rotate relative to the base 31. Wherein the support 32 can rotate within any angle range between 0 deg. and 360 deg.. The adjustment of the lower direction is realized.
Further, the outer wall of the support 32 is provided with a second servo motor 321 and a second speed reducer 322, the mounting seat 33 is rotationally connected to the support 32, an input shaft of the second speed reducer 322 is connected with an output shaft of the second servo motor 321, an output shaft of the second speed reducer 322 is connected with the mounting seat 33, and the second servo motor 321 rotates to drive the second speed reducer 322 to rotate so that the mounting seat 33 can rotate along with the output shaft of the second speed reducer 322 and then rotate relative to the support 32. Wherein the mounting seat 33 can rotate within any range from-90 degrees to 90 degrees. The pitch angle is adjusted.
Further, a third servo motor 331 and a third speed reducer 332 are disposed in the mounting base 33, an input shaft of the third speed reducer 332 is connected with an output shaft of the third servo motor 331, and an output shaft of the third speed reducer 332 is detachably connected with the mounting disc 34. The mounting plate 34 may be used to removably mount the emission source. Wherein the mounting plate 34 can rotate within any angle range between 0 deg. and 360 deg.. The adjustment of the polarization angle is realized.
The alignment of the antenna is of exceptional importance for antenna testing, and thus the use of such axes (XYZ) and motion patterns as described above allows the receiving and transmitting ends to be electronically controlled to achieve high precision point-to-point alignment, whether alignment between the first turntable and the second turntable or between the first turntable and the second turntable, which is of great benefit for ultra-high cross-polarization testing.
In the above embodiment, the first turntable 12 may selectively serve as the transmitting end or the receiving end, and accordingly, the second turntable 13 may selectively serve as the receiving end or the transmitting end, and the third turntable 3 may selectively serve as the receiving end or the transmitting end. In other embodiments, the number of the second turn table 13 and/or the third turn table 3 may be not limited to one but a plurality may be arranged as necessary. In the present invention, the first turntable 12 may be used as a receiving end, and the second turntable 13 and the third turntable 3 may be used as transmitting ends, and for example, the present invention may have complete testing capabilities such as amplitude and phase patterns, cross polarization, gain, front-to-back ratio, etc. of the compact range source antenna and the high-gain external range source antenna at 40 to 750 GHz. Of course, under some other situations or needs, for example, because the first turntable 12 has a more complicated structure and has a more metal reflector, and thus, when the first turntable 12 is used as a receiving end, interference may be introduced at an individual frequency point, so that the invention allows and suggests that the first turntable 12 is changed from the receiving end to the transmitting end, and correspondingly, the second turntable 13 and the third turntable 3 are changed from the transmitting end to the receiving end, so that a user can complete a comparison test without changing hardware and a field, effectively check errors caused by multipath reflection, and improve the antenna test precision. The invention also provides a test platform, and the description of the test platform is referred to above, and will not be repeated here.
The high-precision antenna indoor field testing system and the testing platform thereof have the following beneficial effects:
through setting up first revolving stage 12 and second revolving stage 13 on same base station 11, and first revolving stage 12 can rotate to first position and aim at second revolving stage 13 and constitute the signal test route that has first test distance all the way, or rotate to the outside third revolving stage 13 of second position and constitute the signal test route that has second test distance all the way, can fast switch over signal test route in order to carry out far field test to the antenna of different wavelength, its simple structure, convenient operation is high-efficient.
The foregoing is only the embodiments of the present invention, and therefore, the patent scope of the invention is not limited thereto, and all equivalent structures or equivalent processes using the descriptions of the present invention and the accompanying drawings, or direct or indirect application in other related technical fields, are included in the scope of the invention.
Claims (7)
1. A test platform, comprising:
the device comprises a base station, a first rotary table and a second rotary table;
the base station is provided with a rotating mechanism capable of horizontally rotating on an X-Y axis plane, the first rotating table is arranged on the rotating mechanism, and the second rotating table is fixedly arranged on the base station;
the first turntable can horizontally rotate on an X-Y axis plane by virtue of the rotating mechanism, when the first turntable rotates to a first position, the first turntable is aligned with the second turntable to form a signal testing path with a first testing distance, and when the first turntable rotates to a second position, the first turntable is aligned with an external third turntable to form a signal testing path with a second testing distance;
the first turntable can be selectively used as a transmitting end or a receiving end, and correspondingly, the second turntable can be selectively used as a receiving end or a transmitting end;
a first linear moving mechanism capable of moving in the X-axis direction is arranged between the rotating mechanism and the first rotating table, the first linear moving mechanism is supported and fixed on the rotating mechanism, and the first rotating table is supported and fixed on the first linear moving mechanism; the first linear moving mechanism is supported and fixed with a second linear moving mechanism capable of moving in the Z-axis direction, and the first rotating table is supported and fixed on the second linear moving mechanism;
the first rotating table comprises a first mounting seat, a first rotating unit and a first mounting disc; the first mounting seat is supported and fixed on the second linear moving mechanism, the first rotating unit is supported and fixed on the first mounting seat and can rotate on a plane perpendicular to the X-Y axis plane, and the first rotating unit is fixedly connected with the first mounting disc so as to drive the first mounting disc to rotate on the plane perpendicular to the X-Y axis plane; the second turntable comprises a second mounting seat, a second rotating unit and a second mounting disc; the second installation seat is supported and fixed on a bracket connected with the base, the second rotation unit is supported and fixed on the second installation seat and can rotate on a plane perpendicular to the X-Y axis plane, and the second rotation unit is fixedly connected with the second installation disk so as to drive the second installation disk to rotate on the plane perpendicular to the X-Y axis plane; the first rotating unit and/or the second rotating unit rotate within the range of 0-360 degrees.
2. The test platform of claim 1, wherein:
the first linear moving mechanism comprises a first supporting plate, a first ball screw rotatably connected to the first supporting plate, a first nut sliding block sleeved on the first ball screw and a first servo motor linked with the first ball screw;
the second linear movement mechanism comprises a second supporting plate, a second ball screw rotatably connected to the second supporting plate, a second nut sliding block sleeved on the second ball screw and a second servo motor linked with the second ball screw;
the rotating mechanism comprises a supporting seat arranged on the base station, a third servo motor arranged in the supporting seat, and a first speed reducer with an input shaft connected with an output shaft of the third servo motor;
the output shaft of the first speed reducer is supported and fixed on the first supporting plate, the first nut sliding block is supported and fixed on the second supporting plate, and the second nut sliding block is connected and fixed on the first rotary table.
3. The test platform of claim 1, wherein:
the first rotating unit comprises a fourth servo motor and a second speed reducer, an input shaft of the second speed reducer is connected with an output shaft of the fourth servo motor, the fourth servo motor is fixedly arranged on the first mounting seat, and an output shaft of the second speed reducer is connected with the first mounting disc;
the second rotating unit comprises a fifth servo motor and a third speed reducer, an input shaft of the third speed reducer is connected with an output shaft of the fifth servo motor, the fifth servo motor is fixedly arranged on the second mounting seat, and an output shaft of the third speed reducer is connected with the second mounting disc.
4. The test platform of claim 1, wherein:
the base is provided with a third linear movement mechanism capable of moving in the X-axis direction, and the rotating mechanism is supported and fixed on the third linear movement mechanism; the third linear moving mechanism comprises a linear guide rail and a sliding block which is arranged on the linear guide rail and moves on the linear guide rail, and the rotating mechanism is arranged on the sliding block.
5. The test platform of claim 1, wherein:
the first test distance is less than or equal to 600mm, and the second test distance is greater than 600mm.
6. The test platform of claim 1, wherein:
the base bottom is provided with a plurality of height-adjustable's supporting parts for adjusting the base is balanced.
7. A high-precision antenna indoor field testing system is characterized in that,
a test platform comprising the base station, the first turntable, and the second turntable according to any one of claims 1 to 6, and further comprising a third turntable; the base station is provided with a rotating mechanism capable of horizontally rotating on an X-Y axis plane, the first rotating table is arranged on the rotating mechanism, and the second rotating table is fixedly arranged on the base station;
the first turntable can horizontally rotate on an X-Y axis plane by virtue of the rotating mechanism, when the first turntable rotates to a first position, the first turntable is aligned with the second turntable to form a signal testing path with a first testing distance, and when the first turntable rotates to a second position, the first turntable is aligned with the third turntable to form a signal testing path with a second testing distance;
the first turntable can be selectively used as a transmitting end or a receiving end, the second turntable can be selectively used as a receiving end or a transmitting end correspondingly, and the third turntable can be selectively used as a receiving end or a transmitting end.
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| CN201710540328.6A CN107290600B (en) | 2017-07-05 | 2017-07-05 | High-precision antenna indoor field test system and test platform thereof |
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| CN201710540328.6A CN107290600B (en) | 2017-07-05 | 2017-07-05 | High-precision antenna indoor field test system and test platform thereof |
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| CN107290600B true CN107290600B (en) | 2023-11-07 |
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| CN109786925B (en) * | 2017-11-10 | 2022-08-30 | 千藏工业株式会社 | Antenna positioner, system and method for measuring unnecessary electromagnetic radiation |
| CN113092883B (en) * | 2021-04-12 | 2022-12-27 | 中电科思仪科技股份有限公司 | System and method for testing non-principal plane aiming line error of antenna housing |
| CN114050870B (en) * | 2021-11-02 | 2024-05-07 | 杭州永谐科技有限公司西安分公司 | Switchable 5G test turntable |
| CN114966237A (en) * | 2022-06-16 | 2022-08-30 | 中国电子科技集团公司第五十四研究所 | Antenna far field test system based on wireless network bridge and test method thereof |
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