CN208424376U - A kind of electromagnetic wave room based on multichannel antenna - Google Patents
A kind of electromagnetic wave room based on multichannel antenna Download PDFInfo
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- CN208424376U CN208424376U CN201821154373.4U CN201821154373U CN208424376U CN 208424376 U CN208424376 U CN 208424376U CN 201821154373 U CN201821154373 U CN 201821154373U CN 208424376 U CN208424376 U CN 208424376U
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Abstract
The utility model is suitable for wireless telecom equipment detection technique field, provides a kind of electromagnetic wave room based on multichannel antenna.The electromagnetic wave room includes test cabinet, high-speed data filter interface, sub-miniature A connector, test board, at least two test antennas and regulating mechanism, sub-miniature A connector and high-speed data filter interface are respectively arranged in the opposite sides of test cabinet, test board is installed on the indoor lower end of test, regulating mechanism is installed on the indoor upper end of test, test antenna is installed on regulating mechanism, and it is connect with sub-miniature A connector, each test aerial position is adjusted by regulating mechanism, correspond the radiation signal direction of each test antenna with the antenna to be measured of each position of measured piece on test board respectively.The utility model individually realizes coupling measurement of eating dishes without rice or wine by the antenna to be measured to each position of measured piece, so that the test of each test antenna be made not interfere with each other independently of each other, guarantees the accuracy of test result, test is simple, easy to use.
Description
Technical field
The utility model belongs to wireless telecom equipment detection technique field more particularly to a kind of electricity based on multichannel antenna
Magnetic wave room.
Background technique
In recent years, higher and higher to wireless telecom equipment technical requirements with the rapid development that China wirelessly communicates, and the
The demand for development message transmission rate of five generation mobile communication technologies is higher, and capacity is bigger.Meanwhile diversified wireless telecommunications are set
Standby to rise one after another, extensive large batch of radio communication product falls over each other to occupy market, dog-eat-dog.How to determine that its performance refers to
Mark, produce high performance product and the selection highest product of cost performance rapidly and efficiently become the raw manufacturer of equipment and network operation
The problem of quotient and communication test mechanism are paid close attention to jointly.
The test of usual radio communication product includes these types of method, the OTA (Over carried out initially in microwave dark room
The Air) test.It provides artificial spacious " free space " condition.The radio communication products such as antenna, radar are done in darkroom
The measuring accuracy and efficiency of equipment under test can be improved against noise jamming with electronic product test, become mobile phone, routing
The active test that the wireless terminal products such as device, bluetooth producer is approved.It is tested followed by transverse electromagnetic wave transmission cell (TEM CELL), it
The antenna measurement environment of ideal space is simulated, metal box is capable of providing enough function of shielding to eliminate external disturbance to antenna
It influences, and internal absorbing material can also absorb incidence wave, reduce back wave.The closing of TEM CELL structure, not outside radiation energy,
Because it is healthy and low in cost not endanger tester without interfering other instruments.There are also one is coupling plate test, the method is
It adapts to typical products in mass production to produce survey and design, is near-field test.Near-field test is antenna objective reality itself, once
Entire wireless communications products structure and antenna determine that near field can determine.It therefore can be according to test result whether in certain model
In enclosing, antenna performance is judged.Usually it is connected with coupling measurement fixture with comprehensive tester, mobile phone is fixed on fixture.In life
Antenatal period provides a reasonable compensating for coupling value, determines a power standard according to the test result of several model machines, then right
The maximum power of wireless terminal product is tested, and higher than this power standard, then product meets production requirement, is wanted lower than this
It asks, antenna and related device are not inconsistent standardization.
Currently, microwave dark room used in OTA test is bulky, somewhat expensive, research and development laboratory is suitble to do accurate tune
Examination is used rather than is mass produced in producing line.Transverse electromagnetic wave transmission cell (TEM CELL) is unable to the passive index of observation line, Zhi Nengjin
The active test of row.Due to space limit, TEM CELL absorbing material than relatively thin, the absorption to incidence wave be not very sufficiently, because
The result that this will lead to test is inaccurate.In addition, TEM CELL height is also inadequate.It is analyzed according to the far field test of aerial radiation,
For the antenna for mobile phone of EGSM/DCS frequency range, wireless terminal device is tested at a distance from antenna at least more than 1 meter, and TEM CELL
Than this apart from smaller, thus it measured for microwave dark room it is inaccurate.So TEM CELL can only determine antenna
Property analysis rather than quantitative analysis, it is inconvenient with automatic production line work compound to be used as test in producing line, is improving for automated production
Limitation is brought in efficiency, save the cost；It couples board-like test method position to be not fixed, DUT is measured every time to be needed to adjust position, is added
Upper coupling energy is uneven, so that test consistency is poor, can only be homogeneity of product test, be not to carry out to properties of product
It tests and is tested just for the maximum power of antenna, the test without sundry item.
Utility model content
The utility model embodiment technical problem to be solved is to provide a kind of electromagnetic wave based on multichannel antenna
Room, it is intended to solve the limitation that existing TEM CELL test structure is produced in batches in producing line, internal simulation electromagnetic wave is non-equal
It is high to measured piece status requirement when being distributed the multiple antennas to be measured of different location in even situation, on measured piece, different location electromagnetic wave
Capacity volume variance is big, and different location interferes with each other when testing, and leads to the problem of measured piece test result inaccuracy.
The utility model embodiment, which is achieved in that, provides a kind of electromagnetic wave room based on multichannel antenna, the electromagnetism
Wave room include test cabinet, high-speed data filter interface, sub-miniature A connector, the test board for placing measured piece, for testing measured piece
Antenna performance at least two test antennas and for move it is described test aerial position regulating mechanism；
The sub-miniature A connector and the high-speed data filter interface are respectively arranged in the opposite sides of the test cabinet, described
Test board is installed on the indoor lower end of test, and the regulating mechanism is installed on the indoor upper end of test, the test
Antenna is installed on the regulating mechanism, and is connect with the sub-miniature A connector, adjusts each survey by the regulating mechanism
Try aerial position, make it is each it is described test antenna radiation signal direction respectively with each position of measured piece on the test board
Antenna to be measured correspond, make external test equipment that pumping signal is transmitted to the test cabinet by the sub-miniature A connector
It is interior, and each test antenna is motivated respectively, each test antenna motivates respectively forms near-field test environment, to tested
The antenna to be measured of each position of part individually realizes coupling measurement of eating dishes without rice or wine, and by the survey of the antenna to be measured of each position of measured piece
Test result is transmitted to outside the test cabinet by the high-speed data filter interface.
Further, the test antenna be VIVALDI ultra-wideband antenna, the test antenna be placed in the test
Height R between measured piece on plate depends on measured piece test frequency range and meets near-field coupling test condition, i.e. L≤R≤D,Wherein, L is the physical length size for testing antenna, and λ is wavelength corresponding to tested antenna rf point.
Further, the absorbing material is foam wave-suction material.
Further, the test antenna is 2 or 3.
Further, the regulating mechanism be can be moved along X, Y, Z axis move mould group.
Further, the indoor surrounding of test is equipped with absorbing material.
Further, threaded hole, the screw thread of the sub-miniature A connector and the test cabinet are provided on the side wall of the test cabinet
The connection of hole screw-threaded coupling.
Further, the high-speed data filter interface include DC, AC, USB2.0, USB3.0, RJ45, VGA, DB9,
At least one of DB25, DB26, DB50, DB62 interface.
Further, the test cabinet is square structure.
Compared with prior art, beneficial effect is the utility model embodiment: the utility model embodiment passes through adjusting
Mechanism adjusts the position of each test antenna, keeps the sense of each test antenna each with the measured piece on test board respectively
The antenna to be measured of position corresponds, and is transmitted to pumping signal in test cabinet by sub-miniature A connector using external test equipment,
And each test antenna is motivated respectively, energisation mode depends on outdoor signal source to be made each according to the difference of source forcing mode
It tests antenna independent actuation and forms near-field test environment, establish each test antenna and each position of measured piece in the environment
Antenna one-to-one relationship to be measured individually realizes coupling measurement of eating dishes without rice or wine with the antenna to be measured to each position of measured piece, from
And it does not interfere with each other the test of each test antenna independently of each other, guarantee the accuracy of test result, test is simple, user
Just.
Detailed description of the invention
Fig. 1 is the electromagnetic wave room schematic cross-sectional view based on multichannel antenna that the utility model embodiment one provides；
Fig. 2 is electromagnetic wave room shown in FIG. 1 overlooking structure diagram；
Fig. 3 is the region the I enlarged structure schematic diagram in Fig. 1；
Fig. 4 is the electromagnetic wave room schematic cross-sectional view based on multichannel antenna that the utility model embodiment two provides；
Fig. 5 is electromagnetic wave room shown in Fig. 4 overlooking structure diagram.
Specific embodiment
In order to make the purpose of the utility model, technical solutions and advantages more clearly understood, below in conjunction with attached drawing and implementation
Example, the present invention will be further described in detail.It should be appreciated that specific embodiment described herein is only used to explain
The utility model is not used to limit the utility model.
It as shown in Figure 1 to Figure 3, is the electromagnetic wave room based on multichannel antenna of the offer of the utility model embodiment one.It should
Electromagnetic wave room includes test cabinet 1, high-speed data filter interface 2, SMA (Sub-Miniature-A) connector 3, tested for placing
The test board 4 of part, antenna performance for testing measured piece A two test antennas 5 and be used for 5 position of mobile test antenna
Regulating mechanism 6.The test cabinet 1 be square structure, the regulating mechanism 2 be can be moved along X, Y, Z axis move mould group, so as to
Test antenna 5 is driven to move along X, Y, Z axis, to adjust test antenna 5 in the relative position in test cabinet 1 between measured piece A,
Measured piece A is the wireless communications products such as mobile phone, tablet computer.
Above-mentioned sub-miniature A connector 3 and high-speed data filter interface 2 is respectively arranged in the opposite sides of test cabinet 1, specifically,
Sub-miniature A connector 3 is installed on the side upper end of test cabinet 1, and connect with the threaded hole screw-threaded coupling being arranged on 1 side wall of test cabinet,
Under the premise of guaranteeing that leakproofness is high, and the case where can prevent sub-miniature A connector 3 from loosening in use, external source process
The sub-miniature A connector 3 is motivated to test antenna 5.High-speed data filter interface 2 is mounted on the opposite other side lower end of test board 4, the height
Fast data filtering interface 2 uses low-pass filtering technique, filters out high-frequency signal, improves isolation, enables test data inside and outside test cabinet 1
Not by noise jamming, accurate delivery.The high-speed data filter interface 2 include DC, AC, USB2.0, USB3.0, RJ45, VGA,
One of DB9, DB25, DB26, DB50, DB62 interface is a variety of, mentions for the transmission in electromagnetic wave room with outdoor digital signal
For different interface type, the communications protocol of every kind of interface is strictly observed while ensuring that filtering property is preferable, can meet diversification
Subscriber test equipment demand.
Above-mentioned test board 4 is installed on the lower end in test cabinet 1, and regulating mechanism 6 is installed on the indoor upper end of test, test
Antenna 5 is installed on regulating mechanism 6, and is connect with sub-miniature A connector 3, adjusts each 5 position of test antenna by regulating mechanism 6,
Keep the radiation signal direction of each test antenna 5 a pair of with the antenna to be measured one of each position measured piece A on test board 4 respectively
It answers, is transmitted to external test equipment in test cabinet 1 pumping signal by sub-miniature A connector 3, and motivate each test days respectively
Line 5, energisation mode, which depends on outdoor signal source, makes each 5 independent actuation shape of test antenna according to the difference of source forcing mode
At near-field test environment, the antenna to be measured for establishing each test antenna 5 and each position measured piece A in the environment is corresponded
Relationship individually realizes coupling measurement of eating dishes without rice or wine to the antenna to be measured of each position measured piece A, and by each position measured piece A
The test result of antenna to be measured be transmitted to outside test cabinet 1 by high-speed data filter interface 2, finally measure measured piece A respectively
On each antenna to be measured radio-frequency performance.
In above-described embodiment, test antenna 5 is VIVALDI ultra-wideband antenna, tests antenna 5 and is placed on test board 4
Measured piece A between height R depend on measured piece A test frequency range and meet near-field coupling test condition, i.e. L≤R≤D,Wherein, L is the physical length size for testing antenna 5, and λ is wavelength corresponding to tested antenna rf point.Test cabinet 1
Interior surrounding is equipped with absorbing material 7, which is full laying foam wave-suction material, for absorbing clutter.
In above-described embodiment, it is provided with U-type groove 11 on the side wall of test cabinet 1, is covered in the side of test cabinet by door closure 8
It closes, the type conductive sliver 12 matched with U-type groove 11 is provided on door closure 8, close conductive sponge when on test cabinet 1 in the lid of door closure 8
Item 12 is extruded in bottom and two sidewalls in U-type groove 11, increases type conductive sliver 12 and metal contact area, increases electric conductivity
Energy.
It as shown in figs. 4 and 5, is the electromagnetic wave room section view based on multichannel antenna of the offer of the utility model embodiment two
Structure, there are three antenna 5 is tested, the position of three test antennas 5 is carried out by regulating mechanism 6 respectively for setting in the present embodiment two
Control enables the tested antenna on each test each position antenna 5 and measured piece A to correspond.In addition to test antenna 5
The difference of number and test position and the present embodiment one, other structures are similar, and details are not described herein.In the present embodiment,
It is different according to the energisation mode in outdoor signal source, which can be motivated simultaneously, three test antennas 5 while work
Make radiation signal and form plane wave, all antennas on measured piece A are tested simultaneously, finally measures simultaneously multiple on measured piece A
The radio-frequency performance of antenna.
In conclusion the utility model embodiment is transmitted pumping signal by sub-miniature A connector 3 using external test equipment
To test cabinet 1, and each test antenna 5 is motivated respectively, it is different according to the energisation mode of outdoor signal source, make each test
5 independent actuation of antenna forms near-field test environment, establishes each test antenna 5 and each position measured piece A in the environment
Antenna one-to-one relationship to be measured individually realizes coupling measurement of eating dishes without rice or wine with the antenna to be measured to each position measured piece A, from
And it does not interfere with each other the test of each test antenna 5 independently of each other, guarantee the accuracy of test result, test is simple, user
Just and testing efficiency is high.
The above is only the preferred embodiment of the utility model only, is not intended to limit the utility model, all at this
Made any modifications, equivalent replacements, and improvements etc., should be included in the utility model within the spirit and principle of utility model
Protection scope within.
Claims (9)
1. a kind of electromagnetic wave room based on multichannel antenna, which is characterized in that including test cabinet, high-speed data filter interface, SMA
Connector, the test board for placing measured piece, at least two test antennas of the antenna performance for testing measured piece and use
In the regulating mechanism of the movement test aerial position；
The sub-miniature A connector and the high-speed data filter interface are respectively arranged in the opposite sides of the test cabinet, the test
Plate is installed on the indoor lower end of test, and the regulating mechanism is installed on the indoor upper end of test, the test antenna
It is installed on the regulating mechanism, and is connect with the sub-miniature A connector, each test days are adjusted by the regulating mechanism
Line position, make the radiation signal direction of each test antenna respectively with each position of measured piece on the test board to
Observation line corresponds, and is transmitted to external test equipment in the test cabinet pumping signal by the sub-miniature A connector, and
Each test antenna is motivated respectively, and each test antenna motivates respectively forms near-field test environment, each to measured piece
The antenna to be measured of a position individually realizes coupling measurement of eating dishes without rice or wine, and by the test knot of the antenna to be measured of each position of measured piece
Fruit is transmitted to outside the test cabinet by the high-speed data filter interface.
2. the electromagnetic wave room based on multichannel antenna as described in claim 1, which is characterized in that the test antenna is
VIVALDI ultra-wideband antenna, the height R between the test antenna and the measured piece being placed on the test board depend on quilt
It surveys part test frequency range and meets near-field coupling test condition, i.e. L≤R≤D,Wherein, L is the physical length for testing antenna
Size, λ are wavelength corresponding to tested antenna rf point.
3. the electromagnetic wave room based on multichannel antenna as described in claim 1, which is characterized in that the test antenna is 2
Or 3.
4. the electromagnetic wave room based on multichannel antenna as described in any one of claims 1 to 3, which is characterized in that described
Regulating mechanism be can be moved along X, Y, Z axis move mould group.
5. the electromagnetic wave room based on multichannel antenna as described in claim 1, which is characterized in that the indoor surrounding of test
It is equipped with absorbing material.
6. the electromagnetic wave room based on multichannel antenna as claimed in claim 5, which is characterized in that the absorbing material is foam
Absorbing material.
7. the electromagnetic wave room based on multichannel antenna as described in claim 1, which is characterized in that on the side wall of the test cabinet
It is provided with threaded hole, the sub-miniature A connector is connect with the threaded hole screw-threaded coupling of the test cabinet.
8. the electromagnetic wave room based on multichannel antenna as described in claim 1, which is characterized in that the high-speed data filtering connects
Mouth includes at least one of DC, AC, USB2.0, USB3.0, RJ45, VGA, DB9, DB25, DB26, DB50, DB62 interface.
9. the electromagnetic wave room based on multichannel antenna as described in claim 1, which is characterized in that the test cabinet is rectangular knot
Structure.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821154373.4U CN208424376U (en) | 2018-07-20 | 2018-07-20 | A kind of electromagnetic wave room based on multichannel antenna |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821154373.4U CN208424376U (en) | 2018-07-20 | 2018-07-20 | A kind of electromagnetic wave room based on multichannel antenna |
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| CN208424376U true CN208424376U (en) | 2019-01-22 |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108574540A (en) * | 2018-07-20 | 2018-09-25 | 深圳市中冀联合技术股份有限公司 | A kind of electromagnetic wave room based on multichannel antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108574540A (en) * | 2018-07-20 | 2018-09-25 | 深圳市中冀联合技术股份有限公司 | A kind of electromagnetic wave room based on multichannel antenna |
| CN108574540B (en) * | 2018-07-20 | 2024-05-10 | 深圳市中冀联合技术股份有限公司 | Electromagnetic wave chamber based on multichannel antenna |
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