CN111537766A - Support fixture suitable for different terminal antennas in darkroom OTA test - Google Patents
Support fixture suitable for different terminal antennas in darkroom OTA test Download PDFInfo
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- CN111537766A CN111537766A CN202010323267.XA CN202010323267A CN111537766A CN 111537766 A CN111537766 A CN 111537766A CN 202010323267 A CN202010323267 A CN 202010323267A CN 111537766 A CN111537766 A CN 111537766A
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- gasket
- darkroom
- terminal
- antennas
- ota test
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- 238000012360 testing method Methods 0.000 title claims abstract description 36
- 239000004793 Polystyrene Substances 0.000 claims description 5
- 229920002223 polystyrene Polymers 0.000 claims description 5
- 239000012780 transparent material Substances 0.000 claims description 3
- 230000003247 decreasing effect Effects 0.000 claims description 2
- 230000007423 decrease Effects 0.000 abstract description 2
- 230000005540 biological transmission Effects 0.000 description 9
- 238000011056 performance test Methods 0.000 description 7
- 238000000034 method Methods 0.000 description 5
- 125000006850 spacer group Chemical group 0.000 description 5
- 238000010586 diagram Methods 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 239000011358 absorbing material Substances 0.000 description 2
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 2
- 238000004891 communication Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000000523 sample Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- QVFWZNCVPCJQOP-UHFFFAOYSA-N chloralodol Chemical compound CC(O)(C)CC(C)OC(O)C(Cl)(Cl)Cl QVFWZNCVPCJQOP-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Images
Classifications
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Support Of Aerials (AREA)
Abstract
The invention discloses a supporting clamp which is suitable for terminal antennas with different shapes in a darkroom 1OTA test, wherein a loop antenna supporting frame 3 is vertically arranged in the darkroom 1, a plurality of antennas are distributed on the loop antenna supporting frame 3, and the loop antenna supporting frame 3 is arranged around the supporting clamp, and is characterized in that: support fixture includes revolving stage 4 and gasket, and surveyed terminal antenna and gasket have been placed from top to bottom in proper order to the up end of revolving stage 4, and the gasket is more than a slice, and the quantity of gasket is according to the different increases and decreases of the form of surveyed terminal antenna, and the gross thickness of gasket satisfies to be surveyed terminal antenna upper end high point and is located darkroom 1's rotation center. The fixture has the positioning accuracy not exceeding 1cm, is suitable for placing various types of terminals of the Internet of things, and is easy to install and convenient to place.
Description
Technical Field
The invention relates to the technical field of Internet of things equipment, in particular to a supporting clamp suitable for terminal antennas of different shapes in darkroom OTA (over the air) test.
Background
The current internet of things terminal uses various wireless communication technologies (such as NB-IOT, Lora, WIFI, Bluetooth and the like, and the working frequency band is 450 MHz-6 GHz) to realize information interaction and control among objects, so the air transmission performance is one of the performances of the internet of things terminal which needs to pay attention, the existing air transmission system test continues to use a portable mobile terminal, the air transmission performance test is carried out by coupling a measuring antenna (an external test instrument) inside a darkroom 1 and a terminal antenna space, the terminal antenna is located at the central position of a rotating system as much as possible, the terminal antenna and the measuring antenna keep a fixed distance in the test process, and the method can be divided into the following two modes according to the mode of a supporting device:
1. a combined shaft system: as shown in fig. 1, the system drives the tested terminal 2 fixed on the bracket to rotate by connecting two rotating shafts, so as to generate test points which are in a 360-degree space relative to the tested terminal 2, and the value weighting average of all the test points is the air transmission performance test of the terminal. Because the size and the form of the terminal of the internet of things are various, if a combined shaft system is used, the terminal of the internet of things in each form needs to customize a corresponding test fixture, so the system is not suitable for testing the wireless communication performance of the terminal of the internet of things.
2. Distributed system: as shown in fig. 2, the system generates 360 degree test points relative to the terminal 2 to be tested by the rotation of the support rod and the selection of the measuring antenna on the test ring 3, and the values of all the test points are weighted and averaged to be the over-the-air transmission performance test of the terminal. For a distributed system, the tested terminal 2 can be conveniently placed on the object placing platform on the supporting bar 4; however, for the air transmission performance test, the antenna position of the tested terminal 2 needs to be at the rotation center in the test process, but because the height of the supporting rod 4 (clamp) is fixed, the tested terminal 2 can only be a terminal with the antenna height being a certain fixed height, and the height plus the height of the supporting rod just falls into the rotation center. This approach can only support terminals where the antenna is at a certain fixed height.
Disclosure of Invention
The invention aims to provide an air transmission performance test supporting device and an air transmission performance test supporting method which can accurately position and facilitate the placement of an internet of things terminal according to the size and form characteristics of the internet of things terminal and the air transmission performance test requirements.
The technical scheme adopted by the invention is as follows:
adapt to the support fixture of different form terminal antennas in darkroom OTA test, be provided with the loop antenna support frame perpendicularly in the darkroom, a plurality of antennas have been distributed on the loop antenna support frame, the loop antenna support frame sets up around supporting fixture, supporting fixture includes revolving stage and gasket, the up end of revolving stage has been placed by survey terminal antenna and gasket from top to bottom in proper order, the gasket is more than a slice, the quantity of gasket is according to the different increases and decreases of the form of being surveyed terminal antenna, and the gross thickness of gasket satisfies the rotation center that is located the darkroom by survey terminal antenna upper end high point.
Further, the gasket includes a plurality of gasket sets of thickness levels, each gasket set of thickness levels including at least 5 gaskets of successively increasing thickness.
Further, the thickness classes of the gasket set include units class gaskets, tens class gaskets, and hundreds class gaskets.
Further, the size and shape of each shim are the same as the size and shape of the upper end surface of the rotary table.
Furthermore, the upper surface of the gasket is distributed with anti-skid convex grooves, the lower surface of the gasket is distributed with anti-skid grooves, and the anti-skid convex grooves on the upper surface of the gasket are matched with the anti-skid grooves on the lower surface of the gasket.
Furthermore, the upper end surface of the rotating platform is distributed with anti-skid convex grooves matched with the anti-skid grooves on the lower surface of the gasket.
Further, the gasket is made of radio frequency transparent material, such as acrylic and high density polystyrene.
Further, the gasket is molded using high density polystyrene, for example, for light weight.
Further, 15 antennas are arranged on the annular antenna supporting frame, and the angle interval between every two antennas of the 15 antennas is 22.5 degrees.
Further, the device also comprises a rotating platform controller, wherein the rotating platform controller is connected with the darkroom OTA test control terminal and controls the rotating platform to rotate under the control of the control terminal.
By adopting the technical scheme, the tested terminal antenna is placed in a darkroom for performance testing, the rotating table can rotate in the horizontal direction, and the tested terminal antenna can be driven to rotate due to the fact that the tested terminal antenna is placed on the rotating table, so that the position of the tested terminal antenna is adjusted; the axis of the rotating platform passes through the center of the annular antenna supporting frame, and the position of the terminal antenna to be measured is located at the center of the annular antenna supporting frame after the gasket with proper thickness is placed on the rotating platform. The annular antenna support frame is provided with a plurality of antennas, also called probes, which can be used as measuring antennas for transmitting and receiving measuring data, and has stronger directivity and higher gain. The fixture has the positioning accuracy not exceeding 1cm, is suitable for placing various types of terminals of the Internet of things, and is easy to install and convenient to place.
Drawings
The invention is described in further detail below with reference to the accompanying drawings and the detailed description;
FIG. 1 is a schematic diagram of a prior art composite shaft test system;
FIG. 2 is a schematic diagram of a distributed test system in the prior art;
fig. 3 is a schematic structural diagram of a supporting clamp adapted to different terminal antennas in darkroom OTA testing according to the present invention.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present application clearer, the technical solutions in the embodiments of the present application will be clearly and completely described below with reference to the drawings in the embodiments of the present application, and it is obvious that the described embodiments are some embodiments of the present application, but not all embodiments. The components of the embodiments of the present application, generally described and illustrated in the figures herein, can be arranged and designed in a wide variety of different configurations. It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solution in the present application will be described below with reference to the accompanying drawings.
As shown in figure 3, the invention discloses a supporting clamp suitable for terminal antennas with different shapes in a darkroom OTA test, wherein a ring-shaped antenna supporting frame 3 is vertically arranged in a darkroom 1, a plurality of antennas are distributed on the ring-shaped antenna supporting frame 3, the ring-shaped antenna supporting frame 3 is arranged around the supporting clamp, the supporting clamp comprises a rotating platform 4 and a gasket, the upper end surface of the rotating platform 4 is sequentially provided with the terminal antenna to be tested and the gasket from top to bottom, more than one gasket is arranged, the number of the gaskets is increased or decreased according to different shapes of the terminal antenna to be tested, and the total thickness of the gaskets meets the requirement that the upper end height point of the terminal antenna to be tested is.
Specifically, darkroom 1 adopts full anechoic chamber 1, darkroom 1's concrete structure can be for the cuboid structure, including the shield with be located the outside metal bearing structure of shield, metal bearing structure adopts complete self-supporting structure, can play the supporting role to the shield, wherein, metal bearing structure's material can be the steel, be provided with absorbing material in the shield, in order to guarantee 1 technical properties of anechoic chamber, absorbing material's electrical property plays decisive role to darkroom 1's quiet zone characteristic, physical properties is also directly influencing darkroom 1's structure and safe handling.
Further, the height of the rotating platform 4 needs to be higher than the bottom of the loop antenna supporting frame 3, so that the supporting device is not blocked by the loop antenna supporting frame 3 when rotating; the size of the upper end face of the rotating platform 4 is confirmed according to the size of the darkroom 1 and the size of a terminal to be tested;
further, the gasket includes a plurality of gasket sets of thickness levels, each gasket set of thickness levels including at least 5 gaskets of successively increasing thickness. The thickness classes of the gasket set include units class gaskets, tens class gaskets and hundreds class gaskets.
Specifically, the height L (cm) from the rotation center of the darkroom 1 to the upper surface of the basic supporting device is confirmed according to the size of the darkroom 1, and the thickness of the gasket at the level and below is selected according to the value of L. The respective grades of the gasket are shown in table 1.
Table 1: different levels of gasket thickness
| One bit level pad | Ten-bit level gasket | Hundred-bit stagePin pad | … |
| Gasket 1: 1cm (thick); | a gasket 6: 10cm (thick); | gasket 11: 100cm (thick); | … |
| and (3) a gasket 2: 2cm (thick); | a gasket 7: 20cm (thick); | gasket 12: 200cm (thick); | … |
| and (3) a gasket: 3cm (thick); | gasket 8: 30cm (thick); | a gasket 13: 300cm (thick); | … |
| and (4) a gasket: 4cm (thick); | a gasket 9: 40cm (thick); | gasket 14: 400cm (thick); | … |
| a gasket 5: 5cm (thick); | a gasket 10: 50cm (thick); | gasket 15: 500cm (thick); | … |
when the spacer is used, the height of the tested terminal antenna is H, the value of L-H is the height of the spacer which needs to be added, then the corresponding spacer is selected, and the minimum precision can reach 1 cm.
Further, in order to make the supporting force uniform, the size and shape of each spacer are the same as those of the upper end surface of the rotating table 4.
Further, in order to enable the gasket and the gasket not to slip in the testing process, the anti-slip convex grooves are distributed on the upper surface of the gasket, the anti-slip grooves are distributed on the lower surface of the gasket, and the anti-slip convex grooves on the upper surface of the gasket are matched with the anti-slip grooves on the lower surface of the gasket. The upper end surface of the rotating platform 4 is distributed with anti-skid convex grooves matched with the anti-skid concave grooves on the lower surface of the gasket.
Further, the material of the gasket is made of radio frequency transparent material, such as acrylic and high density polystyrene, for example, for light weight, it is recommended to select high density polystyrene. The shape of each gasket is a cylinder by default or a cuboid, and the size and the shape of each gasket are the same as those of the object placing platform of the basic supporting clamp for uniform supporting force;
furthermore, 15 antennas are arranged on the annular antenna support frame 3, and the angle interval between every two antennas of the 15 antennas is 22.5 degrees.
Further, the device also comprises a rotating platform 4 controller, wherein the rotating platform controller is connected with the darkroom 1OTA test control terminal and controls the rotating platform 4 to rotate under the control of the control terminal.
By adopting the technical scheme, the tested terminal antenna is placed in the darkroom 1 for performance testing, the rotating table 4 can rotate in the horizontal direction, and the tested terminal antenna can be driven to rotate due to the fact that the tested terminal antenna is placed on the rotating table, so that the position of the tested terminal antenna is adjusted; as shown in fig. 3, the axis of the turntable 4 passes through the center of the loop antenna support 3, and the position of the terminal antenna to be measured is located at the center of the loop antenna support 3 after a spacer with a proper thickness is placed on the turntable 4. The annular antenna support frame 3 is provided with a plurality of antennas, also called probes, which can be used as measuring antennas for transmitting and receiving measuring data, and has stronger directivity and higher gain. The fixture has the positioning accuracy not exceeding 1cm, is suitable for placing various types of terminals of the Internet of things, and is easy to install and convenient to place.
Claims (10)
1. Adapt to the support fixture of different form terminal antennas in darkroom OTA test, be provided with the loop antenna support frame perpendicularly in the darkroom, a plurality of antennas are distributing on the loop antenna support frame, and the loop antenna support frame sets up its characterized in that around supporting fixture: the supporting clamp comprises a rotating table and a gasket, the upper end face of the rotating table is sequentially provided with a tested terminal antenna and a gasket from top to bottom, the gasket is more than one sheet, the quantity of the gasket is increased or decreased according to different shapes of the tested terminal antenna, and the total thickness of the gasket meets the requirement that the upper end height of the tested terminal antenna is located at the rotation center of a darkroom.
2. The darkroom OTA test support fixture of claim 1 adapted to different configurations of terminal antennas, wherein: the gasket comprises a plurality of gasket groups with different thickness grades, and each gasket group with different thickness grades comprises at least 5 gaskets with sequentially increasing thickness.
3. The darkroom OTA test support fixture of claim 2 adapted to different configurations of terminal antennas, wherein: the thickness classes of the gasket set include units class gaskets, tens class gaskets and hundreds class gaskets.
4. The darkroom OTA test support fixture of claim 1 adapted to different configurations of terminal antennas, wherein: the size and shape of each gasket are the same as those of the upper end surface of the rotating platform.
5. The darkroom OTA test support fixture of claim 1 adapted to different configurations of terminal antennas, wherein: the upper surface of the gasket is distributed with anti-skid convex grooves, the lower surface of the gasket is distributed with anti-skid grooves, and the anti-skid convex grooves on the upper surface of the gasket are matched with the anti-skid grooves on the lower surface of the gasket.
6. The darkroom OTA test support fixture of claim 5 adapted to different configurations of terminal antennas, wherein: the upper end surface of the rotating platform is provided with anti-skid convex grooves matched with the anti-skid concave grooves on the lower surface of the gasket.
7. The darkroom OTA test support fixture of claim 1 adapted to different configurations of terminal antennas, wherein: the gasket is made of radio frequency transparent material.
8. The darkroom OTA test support fixture of claim 7 adapted to different configurations of terminal antennas, wherein: the gasket is formed by high-density polystyrene.
9. The darkroom OTA test support fixture of claim 1 adapted to different configurations of terminal antennas, wherein: the annular antenna support frame is provided with 15 antennas, and the angle interval between every two antennas of 15 antennas is 22.5 degrees.
10. The darkroom OTA test support fixture of claim 1 adapted to different configurations of terminal antennas, wherein: the device also comprises a rotary table controller, wherein the rotary table controller is connected with the darkroom OTA test control terminal and controls the rotary table to rotate under the control of the control terminal.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323267.XA CN111537766A (en) | 2020-04-22 | 2020-04-22 | Support fixture suitable for different terminal antennas in darkroom OTA test |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010323267.XA CN111537766A (en) | 2020-04-22 | 2020-04-22 | Support fixture suitable for different terminal antennas in darkroom OTA test |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN111537766A true CN111537766A (en) | 2020-08-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010323267.XA Pending CN111537766A (en) | 2020-04-22 | 2020-04-22 | Support fixture suitable for different terminal antennas in darkroom OTA test |
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| CN (1) | CN111537766A (en) |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202870122U (en) * | 2012-09-26 | 2013-04-10 | 深圳市广和通实业发展有限公司 | Antenna test head device |
| CN205015490U (en) * | 2015-10-20 | 2016-02-03 | 重庆大学 | A support for supporting tunnel lining detection geological radar antenna |
| CN206294185U (en) * | 2016-12-27 | 2017-06-30 | 北京中科国技信息系统有限公司 | Support the darkroom of the configuration level ring of SISO and MIMO OTA |
| CN107154825A (en) * | 2017-06-26 | 2017-09-12 | 北京中科国技信息系统有限公司 | The OTA test systems and method of NB IoT equipment |
| CN209634501U (en) * | 2019-03-25 | 2019-11-15 | 新誉庞巴迪信号系统有限公司 | Detect hole transponder mounting kit |
-
2020
- 2020-04-22 CN CN202010323267.XA patent/CN111537766A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202870122U (en) * | 2012-09-26 | 2013-04-10 | 深圳市广和通实业发展有限公司 | Antenna test head device |
| CN205015490U (en) * | 2015-10-20 | 2016-02-03 | 重庆大学 | A support for supporting tunnel lining detection geological radar antenna |
| CN206294185U (en) * | 2016-12-27 | 2017-06-30 | 北京中科国技信息系统有限公司 | Support the darkroom of the configuration level ring of SISO and MIMO OTA |
| CN107154825A (en) * | 2017-06-26 | 2017-09-12 | 北京中科国技信息系统有限公司 | The OTA test systems and method of NB IoT equipment |
| CN209634501U (en) * | 2019-03-25 | 2019-11-15 | 新誉庞巴迪信号系统有限公司 | Detect hole transponder mounting kit |
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Application publication date: 20200814 |