CN110531174A - Electromagnetic reverberation room shields box structure and test method - Google Patents
Electromagnetic reverberation room shields box structure and test method Download PDFInfo
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- CN110531174A CN110531174A CN201910970599.4A CN201910970599A CN110531174A CN 110531174 A CN110531174 A CN 110531174A CN 201910970599 A CN201910970599 A CN 201910970599A CN 110531174 A CN110531174 A CN 110531174A
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- 238000010998 test method Methods 0.000 title claims abstract description 10
- 238000012360 testing method Methods 0.000 claims abstract description 122
- 239000000523 sample Substances 0.000 claims abstract description 91
- 238000009826 distribution Methods 0.000 claims abstract description 4
- 238000005070 sampling Methods 0.000 claims description 28
- 229920000742 Cotton Polymers 0.000 claims description 10
- 238000005259 measurement Methods 0.000 claims description 8
- 239000002184 metal Substances 0.000 claims description 7
- 238000001514 detection method Methods 0.000 claims description 6
- 238000012545 processing Methods 0.000 claims description 6
- 238000012216 screening Methods 0.000 claims description 6
- 230000035945 sensitivity Effects 0.000 claims description 6
- 239000004020 conductor Substances 0.000 claims description 5
- 238000004891 communication Methods 0.000 abstract description 9
- 238000004519 manufacturing process Methods 0.000 description 7
- 101100117775 Arabidopsis thaliana DUT gene Proteins 0.000 description 4
- 101150091805 DUT1 gene Proteins 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 2
- 238000003756 stirring Methods 0.000 description 2
- 239000012491 analyte Substances 0.000 description 1
- 230000009286 beneficial effect Effects 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
- 238000011161 development Methods 0.000 description 1
- 230000003993 interaction Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010287 polarization Effects 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000009466 transformation Effects 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
- G01R29/0807—Measuring electromagnetic field characteristics characterised by the application
- G01R29/0814—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning
- G01R29/0821—Field measurements related to measuring influence on or from apparatus, components or humans, e.g. in ESD, EMI, EMC, EMP testing, measuring radiation leakage; detecting presence of micro- or radiowave emitters; dosimetry; testing shielding; measurements related to lightning rooms and test sites therefor, e.g. anechoic chambers, open field sites or TEM cells
-
- 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
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0878—Sensors; antennas; probes; detectors
-
- 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
- G01R29/0864—Measuring electromagnetic field characteristics characterised by constructional or functional features
- G01R29/0892—Details related to signal analysis or treatment; presenting results, e.g. displays; measuring specific signal features other than field strength, e.g. polarisation, field modes, phase, envelope, maximum value
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- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Shielding Devices Or Components To Electric Or Magnetic Fields (AREA)
Abstract
The invention discloses a kind of electromagnetic reverberation room shielding box structure and test methods, including test box main body and the test suite for being set to test box body interior；The external module being set to outside test suite, probe assembly include the first probe group for being set to the first side plate inner wall；It is set to the second side plate inner wall, and the second probe group corresponding with the first probe group；It is set to the third probe group of backboard inner wall, charging tray component to be measured includes charging tray to be measured arranged side by side and arranged in parallel, first probe group, the second probe group are 3 measuring probes of 3 row, 1 column distribution, and third probe group is that 3 rows 3 arrange 9 symmetrical measuring probes.The present invention solves in the prior art that reverberation chamber shielded box testing efficiency is low, and for different communications electronics products to be measured when test, different frequency ranges to be measured, needing to change entire hardware test environment and measured value and OTA measured value has the problem of relatively large deviation.
Description
Technical field
The present invention relates to testing field, in particular to a kind of electromagnetic reverberation room shielding box structure and test method.
Background technique
The communications band that consumption electronic product is supported is more and more, and communication antenna is more and more, leads to product communicativeness
The time it takes is more and more when energy volume production detection.In existing volume production complete machine communication performance detection technique, traditional single-point
It is low to couple shielded box testing efficiency, general single can only carry out 1 device detection, and in test for different communications to be measured
Electronic product, different frequency ranges to be measured need to change entire hardware test environment, and measured value and OTA measured value have relatively large deviation.
Electromagnetic reverberation room is to motivate a variety of high-order mode electromagnetic waves in big metal cavity using radiation source, and obtain by multiple sampled points
Obtain the technology of uniform field strength in metal cavity.This technology is widely used to the communication performance of development phase consumption electronic product
Test, but using less in the detection of volume production communication performance.
Summary of the invention
The present invention is directed to solve at least some of the technical problems in related technologies.For this purpose, of the invention
Main purpose is to provide a kind of electromagnetic reverberation room shielding box structure and test method, it is intended to solve existing single-point coupling shielded box
Testing efficiency is low, and for different communications electronics products to be measured when test, different frequency ranges to be measured need to change entire hardware testing
Environment and measured value and OTA measured value have the problem of relatively large deviation.
To achieve the above object, the present invention provides a kind of electromagnetic reverberation room shielding box structure and test method, including test
Box main body and the test suite for being set to test box body interior；The external module being set to outside test suite, external module
Including front panel and the first side plate, the second side plate that are respectively arranged at front panel two sides；It is respectively arranged at the first side plate, second side
The top plate and bottom plate of plate upper and lower ends；It is set to the backboard of front panel back relative position, test suite includes being set to first
Probe assembly on side plate, the second side plate and backboard inner wall；It is set to front panel inner wall, and corresponding with probe assembly to be measured
Charging tray component, probe assembly include the first probe group for being set to the first side plate inner wall；It is set to the second side plate inner wall, and with
The corresponding second probe group of one probe group；It is set to the third probe group of backboard inner wall, charging tray component to be measured includes arranged side by side and phase
Mutual charging tray to be measured disposed in parallel, the first upper surface is equipped with Devices to test placing groove.
The first probe group, the second probe group are 3 measuring probes of 3 row, 1 column distribution in one of the embodiments,
Third probe group arranges 9 symmetrical measuring probes for 3 rows 3, and in the first probe group, the second probe group and third probe group
Adjacent measuring probe be mutually perpendicular to and orthogonal, and the horizontal distance between adjacent measuring probe is 140mm, and vertical range is
150mm。
Side is equipped with suction wave cotton below charging tray component to be measured in one of the embodiments, and inhales wave cotton width and test
Box main body inner wall width is equal.
Bottom charging tray component to be measured, and bottom material to be measured are equipped with below charging tray component to be measured in one of the embodiments,
Disk component and survey Double-tray component are symmetrical.
Charging tray component to be measured passes through automatic push-pull drawer in preceding with bottom charging tray component to be measured in one of the embodiments,
Panel folding.
Inhaling wave cotton in one of the embodiments, is electromagnetic-wave absorbing rubber layer.
Test box body inner wall surface is smooth metal good conductor in one of the embodiments,.
The first side plate, the second side plate, backboard, top plate, front panel and bottom plate in one of the embodiments, is connected as can
It is detachably connected with structure.
Electromagnetic reverberation room shielded box test method is as follows:
S1, uplink test data sampling step:
When starting the sampling of uplink test data, a frequency is issued by the Devices to test being placed in Devices to test placing groove
The test signal of section, then successively switch 15 measurements being set on the first side plate, the second side plate and backboard by control switch
Probe, then sampling value is carried out by the test signal that measuring instrumentss receive Devices to test sending to each measuring probe, and
It is calculated by reverberation chamber algorithm and exports final uplink power result；
S2, downlink test data sampling step:
When starting the sampling of downlink test data, a frequency is issued by the Devices to test being placed in Devices to test placing groove
The test signal of section, then successively switch 15 measurements being set on the first side plate, the second side plate and backboard by control switch
Probe, then sampling value is carried out by the test signal that measuring instrumentss receive Devices to test sending to each measuring probe, and
It is calculated by reverberation chamber algorithm and exports final descending power result；
S3, processing screening step:
The measurement numerical value that system background obtains uplink test data sampling step and downlink test data sampling step with
Default measurement threshold value carries out received signal strength and the opposite test of receiving sensitivity, and the undesirable Devices to test of radiance is detected
It picks out.
Uplink test sample data step is divided into downlink test sample data and carrying out simultaneously in one of the embodiments,
Mode and sequence carry out mode, and at the same time under carry out mode, uplink test data sampling step and the sampling of downlink test data are walked
Suddenly it carries out simultaneously, then is performed simultaneously processing screening step；Carry out sequence carry out mode when, uplink test data sampling step with
Any one of downlink test data sampling step step first carries out, and executes after remaining step, then executes processing screening step respectively.
Beneficial effects of the present invention are as follows:
Test shielded box surface is smooth metal good conductor, and has multiple measuring probes, between adjacent probes mutually just
Hand over polarization.By adopting value sampling to each measuring probe, the effect of electronics stirring is formed, the machine of traditional electromagnetic reverberation room is substituted
Tool rotation stirring, to achieve the effect that electromagnetism reverberation.To different communications electronics products to be measured, different frequency ranges to be measured are entire hard
Part test environment (including measuring probe) does not need to change.And switched by electronics and popped one's head in, reverberation chamber algorithm is calculated
Value, it is closer with 0TA measured value.Output capacity is tested in the test for promoting shielded box, can support 4 simultaneously in a test shielded box
Equipment test.
Detailed description of the invention
In order to more clearly explain the embodiment of the invention or the technical proposal in the existing technology, to embodiment or will show below
There is attached drawing needed in technical description to be briefly described, it should be apparent that, the accompanying drawings in the following description is only this
Some embodiments of invention for those of ordinary skill in the art without creative efforts, can be with
The structure shown according to these attached drawings obtains other attached drawings.
Fig. 1 is test box main body and each component overall structure diagram of external module in the present invention.
Fig. 2 is that the test suite of test box body interior and charging tray component overall structure to be measured overlook signal in the present invention
Figure.
Fig. 3 is that the charging tray component to be measured and bottom charging tray component to be measured and middle part suction wave cotton setting position in the present invention are illustrated
Figure.
Fig. 4 is charging tray component to be measured and bottom charging tray component to be measured side facilities schematic diagram in the present invention.
Fig. 5 is backboard in the present invention and is set to the facilities schematic diagram of third probe group on backboard.
Fig. 6 is uplink and downlink test data sampling step and processing screening step schematic diagram in the present invention.
[main component/component reference number explanation]
Specific embodiment
Following will be combined with the drawings in the embodiments of the present invention, and technical solution in the embodiment of the present invention carries out clear, complete
Site preparation description.Obviously, described embodiment is only a part of the embodiments of the present invention, instead of all the embodiments.
Based on the embodiments of the present invention, those of ordinary skill in the art are obtained without creative efforts
The every other embodiment obtained, shall fall within the protection scope of the present invention.
It is to be appreciated that the directional instruction (such as up, down, left, right, before and after ...) of institute is only used in the embodiment of the present invention
In explaining in relative positional relationship, the motion conditions etc. under a certain particular state (as shown in the picture) between each component, if should
When particular pose changes, then directionality instruction also correspondingly changes correspondingly.
The description for being such as related to " first ", " second " in the present invention is used for description purposes only, and should not be understood as indicating
Or it implies its relative importance or implicitly indicates the quantity of indicated technical characteristic." first ", " second " are defined as a result,
Feature can explicitly or implicitly include at least one of the features.
In the description of the present invention, the meaning of " plurality " is at least two, such as two, three etc., unless otherwise clear
It is specific to limit.
In the present invention unless specifically defined or limited otherwise, term " connection ", " fixation " etc. shall be understood in a broad sense,
It for example, " fixation " may be a fixed connection, may be a detachable connection, or be integrally formed；It can be mechanical connection, it can also be with
It is electrical connection；Can be directly connected, can also indirectly connected through an intermediary, can be connection inside two elements or
The interaction relationship of two elements, unless otherwise restricted clearly.For the ordinary skill in the art, Ke Yigen
The concrete meaning of above-mentioned term in the present invention is understood according to concrete condition.
It in addition, the technical solution in the present invention between each embodiment can be combined with each other, but must be with this field
Based on those of ordinary skill can be realized, this will be understood that when the combination of technical solution appearance is conflicting or cannot achieve
The combination of kind of technical solution is not present, also not the present invention claims protection scope within.
Embodiment 1:
Referring to Fig.1~Fig. 5, a kind of electromagnetic reverberation room shielding box structure and test method, including test box main body 1 and setting
Test suite 11 inside test box main body 1；The external module 10 being set to outside test suite 11, external module 10 include
Front panel 100 and the first side plate 101, the second side plate 102 for being respectively arranged at 100 two sides of front panel；It is respectively arranged at the first side
The top plate 105 and bottom plate 104 of plate 101,102 upper and lower ends of the second side plate；It is set to the backboard of 100 back relative position of front panel
103, test suite 11 includes the probe assembly 110 being set on 103 inner wall of the first side plate 101, the second side plate 102 and backboard；
It is set to 100 inner wall of front panel, and charging tray component 111 to be measured corresponding with probe assembly 110, probe assembly 110 includes setting
It is placed in the first probe group 1101 of 101 inner wall of the first side plate；Be set to 102 inner wall of the second side plate, and with the first probe group 1101
Corresponding second probe group 1102；It is set to the third probe group 1103 of 103 inner wall of backboard, charging tray component 111 to be measured includes simultaneously
Column and charging tray to be measured 1110 arranged in parallel and the second charging tray 1111 to be measured, the first, second 1111 upper surface of charging tray to be measured
It is equipped with Devices to test placing groove 1112.
Charging tray in the present invention does not absolutely do quantity restriction, such as the first, second above-mentioned charging tray to be measured, bottom material to be measured
Disk.It is to have the function that the test needs that gear to actual circumstances to realize free handling under specific circumstances.For example, need simultaneously into
When the multiple analyte detection programs to be detected of row, the charging tray in the present invention can additionally increase, and e.g., 2 groups of disposable test, every group has two
The charging tray of a location to be checked, or, charging tray quantity is suitably reduced, to adapt to the less test environment of object to be detected, for example, existing group
2 groups of the charging tray installed, every group, there are two the charging tray of location to be checked, now need to only carry out 2 objects to be detected, so excessive charging tray
There will certainly be certain influence on testing result, be reduced to one group of charging tray.
The close beta environment of shielded box is cuboid, having a size of 560mm (wide, range: 520-700mm) x 600mm
(high, range: 520-700mm) x 800mm (deep, range: 750-880mm),.Six faces of cavity metal all smooth by surface
Good conductor is constituted, and forms electromagnetic reverberation room.To guarantee that the mode of electromagnetic wave motivated on length and width, deep three sides is different, long,
Wide, high value differs.Shielded box has electromagnetic shielding characteristic, shielding properties >=50dB.The function of shielded box equipment: to putting
It sets and does uplink (TX) total radiant power (TRP) and downlink (RX) received signal strength (RSSI)/reception spirit in 4 internal DUT
Sensitivity (TIS) is opposite to test, and test frequency range covers 650MHz-6000MHz.The effect of shielded box equipment: in volume production production line,
The undesirable DUT of radiance is detected and picked out.
There are 15 measuring probes inside test shielded box, be distributed in the backplate, Left-Hand Panel and right panel of shielded box,
As shown in the figure.Wherein 9 measuring probes are distributed in backplate, symmetrical in 3 (row) x 3 (column)；Left-Hand Panel is distributed 3 surveys
Amount probe, is distributed in 3 (row) x 1 (column)；Right panel is distributed 3 measuring probes, is distributed in 3 (row) x 1 (column).To guarantee to survey
Isolation between amount probe is greater than 15dB, and orthogonal, and the level that adjacent probes are mutual is mutually perpendicular between adjacent probes
Distance is 140mm (range: 130mm-175mm), and vertical range is 150mm (range: 130mm-175mm)).
Embodiment 2:
Referring to Fig. 2, Fig. 4, Fig. 5, it is preferable that the first probe group 1101, the second probe group 1102 are the 3 of 3 row, 1 column distribution
A measuring probe, third probe group 1103 are that 3 rows 3 arrange 9 symmetrical measuring probes, and the first probe group 1101, second
Adjacent measuring probe in probe group 1102 and third probe group 1103 is mutually perpendicular to and orthogonal, and between adjacent measuring probe
Horizontal distance is 140mm, vertical range 150mm.
Measuring probe is all channel antenna, and work bandwidth covers 600MHz-6000MHz.Measuring probe and test shielded box
External 15 electronic radio-frequency of 1x switch is connected.15 tunnels of RF switch are separately connected 15 measuring probes, and 1 tunnel is separately connected survey
Measure the port of instrument.
Referring to Fig. 3, it is preferable that 111 lower section side of charging tray component to be measured, which is equipped with, inhales wave cotton 2, and inhales 2 width of wave cotton and test
1 inner wall width of box main body is equal.
To guarantee rapid decay of the electromagnetic wave in shielded box, there is one piece of 530mm (width) x in shielded box front panel 100
The electromagnetic-wave absorbing rubber of 105mm (height) x 4mm (thickness), absorbing property are greater than 10dB within the scope of 600MHz-6GHz.
Referring to Fig. 3, Fig. 4, it is preferable that be equipped with bottom charging tray component 1113 to be measured, and bottom below charging tray component 111 to be measured
Charging tray component 1113 to be measured and survey Double-tray component are symmetrical.
4 equipment can once be carried out while being tested, testing efficiency is substantially increased.
- Fig. 4 referring to Fig.1, it is preferable that charging tray component 111 to be measured passes through automatic push-pull with bottom charging tray component 1113 to be measured
Drawer is opened and closed in front panel 100.
4 test systems (DUT) are placed in upper layer and lower layer drawer two-by-two, automate drawer push-in by electric/pneumatic
Shielded box is tested.
Referring to Fig. 3, it is preferable that suction wave cotton 2 is electromagnetic-wave absorbing rubber layer.
Referring to Fig.1, it is preferable that test 1 inner wall surface of box main body is smooth metal good conductor.
Referring to Fig.1, it is preferable that the first side plate 101, the second side plate 102, backboard 103, top plate 105,100 and of front panel
Bottom plate 104 is connected as detachable connection structure.
DUT1 and DUT2 are placed in upper layer, arrive shielded box upper layer inner wall distance 217.5mm, arrive shielded box lower layer inner wall distance
382.5mm.The distance center 192mm, DUT1 at the center DUT1 to the center DUT2 is arrived to the center inner left wall distance 184mm, DUT1
Right side inner wall distance 376mm.The center DUT2 is to the inner left wall distance center 376mm, DUT2 to right side inner wall distance 184mm.
DUT3 and DUT4 are placed in lower layer, arrive shielded box upper layer inner wall distance 382.5mm, arrive shielded box lower layer inner wall distance 217.5mm.
The center DUT3 is to the distance center 192mm, DUT3 at the center DUT4 to the inner left wall distance center 184mm, DUT3 to right side inner wall
Distance 376mm.The center DUT4 is to the inner left wall distance center 376mm, DUT4 to right side inner wall distance 184mm.DUT1,2,3,4
Center is to shielded box back inner wall distance 648mm, to the forward interior distance 152mm of shielded box.
- Fig. 6 referring to Fig.1, electromagnetic reverberation room shielded box test method are as follows:
S1, uplink test data sampling step:
When starting the sampling of uplink test data, one is issued by the Devices to test being placed in Devices to test placing groove 1112
The test signal of a frequency range, then successively switched by control switch and be set to the first side plate 101, the second side plate 102 and backboard 103
On 15 measuring probes, then by measuring instrumentss to each measuring probe receive Devices to test sending test signal carry out
Value is sampled, and is calculated by reverberation chamber algorithm and exports final uplink power result；
S2, downlink test data sampling step:
When starting the sampling of downlink test data, one is issued by the Devices to test being placed in Devices to test placing groove 1112
The test signal of a frequency range, then successively switched by control switch and be set to the first side plate 101, the second side plate 102 and backboard 103
On 15 measuring probes, then by measuring instrumentss to each measuring probe receive Devices to test sending test signal carry out
Value is sampled, and is calculated by reverberation chamber algorithm and exports final descending power result；
S3, processing screening step:
The measurement numerical value that system background obtains uplink test data sampling step and downlink test data sampling step with
Default measurement threshold value carries out received signal strength and the opposite test of receiving sensitivity, and the undesirable Devices to test of radiance is detected
It picks out.
Embodiment 3:
Preferably, uplink test sample data step and the downlink test sample data are that sequence carries out mode,
Difference is: uplink test, and 4 Devices to test are that sequence carries out mode, downlink test, and 4 Devices to test are while carrying out mode.
Working principle of the present invention is as follows:
Shielded box has electromagnetic shielding characteristic, shielding properties >=50dB.The function of shielded box equipment: to internally placed
4 DUT do that uplink total radiant power and down receiving signal intensity/receiving sensitivity are opposite to test, test frequency range covering
650MHz-6000MHz.The effect of shielded box equipment: in volume production production line, the undesirable DUT of radiance is detected and is selected
Out.
The above description is only a preferred embodiment of the present invention, is not intended to limit the scope of the invention, all at this
Under the inventive concept of invention, using equivalent structure transformation made by description of the invention and accompanying drawing content, or directly/use indirectly
It is included in other related technical areas in scope of patent protection of the invention.
Claims (10)
1. a kind of electromagnetic reverberation room shields box structure, which is characterized in that including test box main body and be set to the test box master
The test suite in internal portion；The external module being set to outside the test suite, the external module include front panel and divide
It is not set to the first side plate, the second side plate of the front panel two sides；It is respectively arranged at first side plate, above and below the second side plate
The top plate and bottom plate at both ends；It is set to the backboard of front panel back relative position, the test suite includes being set to institute
State the probe assembly on the first side plate, the second side plate and the backboard inner wall；Be set to the front panel inner wall, and with the spy
The corresponding charging tray component to be measured of head assembly, the probe assembly include the first probe for being set to the first side plate inner wall
Group；It is set to the second side plate inner wall, and the second probe group corresponding with the first probe group；It is set in the backboard
The third probe group of wall, the charging tray component to be measured include the charging tray to be measured of setting, and first charging tray upper surface is equipped with to be measured
Equipment placing groove.
2. electromagnetic reverberation room according to claim 1 shields box structure, which is characterized in that the first probe group, second
Probe group is 3 measuring probes of 3 row, 1 column distribution, and the third probe group is that 3 rows 3 arrange symmetrical 9 measurements spy
Head, and the adjacent measuring probe in the first probe group, the second probe group and the third probe group is mutually perpendicular to and orthogonal,
And the horizontal distance between adjacent measuring probe is 140mm, vertical range 150mm.
3. electromagnetic reverberation room according to claim 1 shields box structure, which is characterized in that below the charging tray component to be measured
Side, which is equipped with, inhales wave cotton, and the suction wave cotton width is equal with the test box main body inner wall width.
4. electromagnetic reverberation room according to claim 1 shields box structure, which is characterized in that below the charging tray component to be measured
Equipped with bottom charging tray component to be measured, and bottom charging tray component to be measured and the survey Double-tray component are symmetrical.
5. electromagnetic reverberation room according to claim 4 shields box structure, which is characterized in that the charging tray component to be measured and institute
It states bottom charging tray component to be measured and is opened and closed by automatic push-pull drawer in front panel.
6. electromagnetic reverberation room according to claim 3 shields box structure, which is characterized in that the suction wave cotton is electromagnetic-wave absorbing rubber
Layer.
7. electromagnetic reverberation room according to claim 1 shields box structure, which is characterized in that the test box main body inner wall table
Face is smooth metal good conductor.
8. electromagnetic reverberation room according to claim 1 shields box structure, which is characterized in that first side plate, second
Side plate, backboard, top plate, front panel and bottom plate are connected as detachable connection structure.
9. electromagnetic reverberation room according to claim 1-8 shields box structure, which is characterized in that the electromagnetism is mixed
It is as follows to ring room shielded box test method:
S1, uplink test data sampling step:
When starting the sampling of uplink test data, measuring instrumentss issue the standard uplink signal of a frequency range fixed level value, then lead to
It crosses control switch and successively switches 15 measuring probes being set on the first side plate, the second side plate and backboard, then pass through measuring instrument
The test signal that table receives Devices to test sending to each measuring probe carries out sampling value, and is calculated by reverberation chamber algorithm
And export final uplink power result；
S2, downlink test data sampling step:
When starting the sampling of downlink test data, measuring instrumentss issue the standard down signal of a frequency range fixed level value, to be measured
Equipment obtains down receiving signal intensity (RSSI) by 15 measuring probes being located on the first side plate, the second side plate and backboard
With the sampling value of receiving sensitivity (TIS), and is calculated by reverberation chamber algorithm and export final descending power result；
S3, processing screening step:
System background is by the measurement numerical value that uplink test data sampling step and downlink test data sampling step obtain and presets
It measures threshold value and carries out received signal strength and the opposite test of receiving sensitivity, the undesirable Devices to test detection of radiance is selected
Out.
10. electromagnetic reverberation room according to claim 9 shields box structure, which is characterized in that the uplink test is adopted
Sample data step and the downlink test sample data are that sequence carries out mode, and difference is: uplink test, and 4 to be measured to set
Standby to carry out mode, downlink test for sequence, 4 Devices to test are while carrying out mode.
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| CN113884520A (en) * | 2021-09-24 | 2022-01-04 | 中国原子能科学研究院 | Storage testing device for neutron scattering test sample |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN203643474U (en) * | 2013-10-31 | 2014-06-11 | 陕西海泰电子有限责任公司 | Hybrid stirring device of mechanical stirring and source stirring of electromagnetic reverberation chamber |
| CN104780002A (en) * | 2015-04-21 | 2015-07-15 | 陈奕铭 | Miniaturized OTA testing system with multiple probes |
| WO2016169001A1 (en) * | 2015-04-21 | 2016-10-27 | 陈奕铭 | Miniaturized ota test system having plurality of probes |
| WO2019033642A1 (en) * | 2017-08-16 | 2019-02-21 | 深圳市新益技术有限公司 | Test instrument, antenna measurement system and test method |
| CN211086449U (en) * | 2019-10-11 | 2020-07-24 | 深圳合一测试科技有限公司 | Shielding box structure of electromagnetic reverberation room |
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2019
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| CN203643474U (en) * | 2013-10-31 | 2014-06-11 | 陕西海泰电子有限责任公司 | Hybrid stirring device of mechanical stirring and source stirring of electromagnetic reverberation chamber |
| CN104780002A (en) * | 2015-04-21 | 2015-07-15 | 陈奕铭 | Miniaturized OTA testing system with multiple probes |
| WO2016169001A1 (en) * | 2015-04-21 | 2016-10-27 | 陈奕铭 | Miniaturized ota test system having plurality of probes |
| WO2019033642A1 (en) * | 2017-08-16 | 2019-02-21 | 深圳市新益技术有限公司 | Test instrument, antenna measurement system and test method |
| CN211086449U (en) * | 2019-10-11 | 2020-07-24 | 深圳合一测试科技有限公司 | Shielding box structure of electromagnetic reverberation room |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113884520A (en) * | 2021-09-24 | 2022-01-04 | 中国原子能科学研究院 | Storage testing device for neutron scattering test sample |
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