CN106872801A - A kind of near field test system - Google Patents
A kind of near field test system Download PDFInfo
- Publication number
- CN106872801A CN106872801A CN201710215173.9A CN201710215173A CN106872801A CN 106872801 A CN106872801 A CN 106872801A CN 201710215173 A CN201710215173 A CN 201710215173A CN 106872801 A CN106872801 A CN 106872801A
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- antenna
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- turntable
- near field
- support structure
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- 238000012360 testing method Methods 0.000 title claims abstract description 87
- 230000005855 radiation Effects 0.000 description 5
- 238000010276 construction Methods 0.000 description 4
- 238000010586 diagram Methods 0.000 description 4
- 238000000034 method Methods 0.000 description 4
- 238000009434 installation Methods 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 238000005070 sampling Methods 0.000 description 2
- 241000208340 Araliaceae Species 0.000 description 1
- 235000005035 Panax pseudoginseng ssp. pseudoginseng Nutrition 0.000 description 1
- 235000003140 Panax quinquefolius Nutrition 0.000 description 1
- 238000012512 characterization method Methods 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
- 230000007812 deficiency Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 239000004744 fabric Substances 0.000 description 1
- 235000008434 ginseng Nutrition 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012546 transfer Methods 0.000 description 1
Classifications
-
- 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
-
- 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
- G01R29/0871—Complete apparatus or systems; circuits, e.g. receivers or amplifiers
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- General Physics & Mathematics (AREA)
- Variable-Direction Aerials And Aerial Arrays (AREA)
Abstract
The invention discloses a kind of near field test system, including anechoic chamber, turntable, N number of test antenna (N is natural number and N ＞ 1), Antenna support structure, it is characterised in that the test antenna is installed on Antenna support structure with the distance different away from turntable at least two.The present invention can obtain the signal away from the different distance of measured piece at least two in single pass, and the phase information of measured piece can be obtained by calculating.Therefore on the premise of the testing time is not increased, connection cables can be avoided and extra equipment is used, testing cost be reduced, also for the test of the active antenna without referenced interface provides a simple and quick solution.
Description
Technical field
The present invention relates to field of measuring technique, more particularly to a kind of near field test system of wireless performance parameter.
Background technology
Antenna near-field test is divided into three kinds of sphere, cylinder and plane, and planar near-field test is generally used for that wave beam is narrower and method
To the antenna of radiation, cylinder near-field test is for general on orientation and the one of scanning plane of pitching compared with broad beam another
The narrower antenna of face wave beam, and sphere near-field test is generally used for various types of antennas.
In general, by the way of far field test but larger for the bore or working frequency range of test of active antenna
Antenna higher, its far field is in larger distance, and general far field test condition cannot meet, in this case, can be using near
Field test.In the prior art, the near-field test to active antenna need to use emitter or vector network analyzer, respectively from hair
Reference signal, to measuring instrumentss, is contrasted with the phase for measuring antenna all the way to penetrate source or the coupling of power amplifier end, is obtained
The phase information of sampling.This is accomplished by the extra cable of connection and equipment, on the one hand increased testing cost, is on the other hand increased
Plus connecting cable can cause the uncertainty of test result to a certain extent.Additionally, some novel all-in-ones is active
Antenna structure closely, does not remain for the radio frequency interface (hereinafter referred to as " referenced interface ") of above-mentioned reference device in advance, then without
Method is tested the phase of active antenna by the way of above-mentioned reference source.
The content of the invention
In order to overcome the deficiencies in the prior art, the present invention to propose a kind of near field test system suitable for active antenna,
It is not required to connect extra equipment (vector network analyzer) by cable, the active antenna of integration can be tested, especially
Can be to carry out phase alignment and measurement for active phase array antenna and its unit, and phased array antenna antenna pattern
Measurement.
To achieve the above object, first aspect present invention embodiment proposes a kind of technical scheme：
A kind of near field test system, including anechoic chamber, turntable, N number of test antenna (N is natural number and N ＞ 1), antenna
Supporting construction, it is characterised in that the test antenna is installed on Antenna support structure with the distance different away from turntable at least two
On.
Further, the Antenna support structure also includes a rotating mechanism.
Further, the test antenna is arranged in circular arc, and the turntable is located at the home position of the circular arc.
Further, the test antenna is in circular arrangement, and the turntable is located at the home position of the annulus.
Further, the Antenna support structure also includes the circumferentially rotated rotating machine of a control test antenna
Structure.
Further, the circumferentially rotated angle of the Antenna support structure is less than or equal to away from turntable same distance
The maximum of the differential seat angle of adjacent test antenna.
Compared to existing test system, the present invention at least has the following advantages that：
1. test antenna is installed on Antenna support structure with the distance different away from turntable at least two, in single pass
The signal away from the different distance of measured piece at least two can be obtained, the phase information of measured piece can be obtained by calculating.Therefore exist
On the premise of not increasing the testing time, connection cables can be avoided and extra equipment is used, reduce testing cost, also be without ginseng
The test for examining the active antenna of interface provides a simple and quick solution.
2. the use of cooperation rotating mechanism can form the scanning plane of higher resolution, improve the precision of test, and can reduce
The quantity of antenna is tested, so as to reduce the interference that the reflection tested between antenna in darkroom is caused.
3. the space arrangement of test antenna can carry out the setting of different coverings, such as quilt according to the difference of measured piece testing requirement
The main radiation direction of part antenna is surveyed for normal direction or partial radiation characteristic is concerned only with, then test antenna can be arranged as circular arc,
Its radian size is set according to testing requirement；As measured piece antenna is omnidirectional or pays close attention to integral radiation characteristic, then can be by test days
Line is arranged as 360 ° of annular.
Brief description of the drawings
The above-mentioned and/or additional aspect of the present invention and advantage will become from the following description of the accompanying drawings of embodiments
Substantially and be readily appreciated that, wherein：
Fig. 1 is the schematic diagram of the embodiment of the present invention 1, anechoic chamber, not shown in figure；
Fig. 2 is the schematic diagram of the embodiment of the present invention 2, anechoic chamber, not shown in figure；
Fig. 3 is the schematic diagram of the embodiment of the present invention 3, anechoic chamber, not shown in figure；
Fig. 4 is the schematic diagram of the embodiment of the present invention 4, anechoic chamber, not shown in figure.
Specific embodiment
Embodiments of the present invention are elaborated below.It is emphasized that what the description below was merely exemplary,
It is intended to be used to explain the present invention, and is not considered as limiting the invention.
Additionally, term " first ", " second " are only used for describing purpose, and it is not intended that indicating or implying relative importance
Or the implicit quantity for indicating indicated technical characteristic.Thus, define " first ", the feature of " second " can express or
Implicitly include one or more this feature.In the description of the invention, " multiple " is meant that two or more,
Unless otherwise expressly limited specifically.
In the present invention, unless otherwise clearly defined and limited, term " installation ", " connected ", " connection ", " fixation " etc.
Term should be interpreted broadly, for example, it may be being fixedly connected, or being detachably connected, or be integrally connected；It can be machine
Tool is connected, or electrically connected；Can be joined directly together, it is also possible to be indirectly connected to by intermediary, can be two units
Connection inside part.For the ordinary skill in the art, can as the case may be understand above-mentioned term in this hair
Concrete meaning in bright.
In the present invention, unless otherwise clearly defined and limited, fisrt feature second feature it " on " or D score
The first and second feature directly contacts can be included, it is also possible to including the first and second features be not directly contact but by it
Between other characterisation contact.And, fisrt feature second feature " on ", " top " and " above " include that first is special
Levy directly over second feature and oblique upper, or be merely representative of fisrt feature level height higher than second feature.Fisrt feature exists
Second feature " under ", " lower section " and " below " include fisrt feature directly over second feature and oblique upper, or be merely representative of
Fisrt feature level height is less than second feature.
Near field test system of the present invention includes anechoic chamber, is used to place the turntable of measured piece positioned at darkroom inside, is located at
Antenna support structure inside darkroom, and the N number of test antenna being installed on Antenna support structure (N is natural number and N ＞ 1).
Refering to Fig. 1, in the embodiment of the present invention 1, Antenna support structure 201 is semicircular arc, and turntable 101 is located at the center of circle of the semi arch
Position, 6 first test antennas 301 and 7 second test antennas 302 are installed on Antenna support structure 201, wherein first surveys
Examination antenna 301 is relatively near away from turntable 101, the second test antenna 302 away from turntable 101 farther out.Antenna support structure 201 also includes one
Rotating mechanism 401.Rotating mechanism 401 can be the arc-shaped guide rail driven by motor-driven gear, or other can realize turning
Dynamic structure.In embodiment 1, test antenna is symmetrical, therefore turntable 101 rotates 180 ° and can complete hemispherical scanning.
If test antenna asymmetric distribution, turntable 101 need to rotate 360 °.Antenna support structure 201 can be controlled by rotating mechanism 401
Test antenna is circumferentially rotated, so as to improve scanning sample precision, the circumferentially rotated angle is equal to away from turning
During the maximum of the differential seat angle of the adjacent test antenna of the same distance of platform 101, you can realize full luffing angle (measured piece normal direction week
Enclose ± 90 °) scanning, and sampling precision can flexible modulation as needed.In the present embodiment, because test antenna uniformly divides
Cloth, the differential seat angle of the adjacent test antenna away from the same distance of turntable 101 is 15 °, therefore, when test antenna along the circumferential direction turns
When dynamic angle covers 15 °, you can realize the scanning of full luffing angle.During test, can by first test antenna 301 obtain away from
Signal at measured piece closer distance, the signal away from measured piece compared with distant location is obtained by the second test antenna 302, works as turntable
During the rotation of 101 180 ° of completions, you can two hemispherical sample informations of different radii are obtained, by the width on different radii
Degree information can calculate the phase information for obtaining measured piece, and the far-field radiation that can obtain measured piece by Near-far fields transfer algorithm is special
Property.It follows that the present invention is not on the premise of the testing time is increased, connection cables can be avoided and extra equipment is used, drop
Low testing cost, reduces the noise jamming in darkroom, also for the test of the active antenna without referenced interface provides one
Simple and quick solution.
Refering to Fig. 2, the near field test system of the embodiment of the present invention 2 is substantially the same manner as Example 1, and difference is antenna
Supporting construction 201 is the half of positive 20 quadrangle, and polygonized structure is easy to test positioning and the installation of antenna, tests antenna
So arranged in circular arc.
Refering to Fig. 3, the near field test system of the embodiment of the present invention 3 is substantially the same manner as Example 2, and difference is antenna
Supporting construction 201 is positive ten octagon, and the 9 first test antennas 301 and 9 second test antennas 302 being mounted thereon are in
Circular arrangement.Additionally, the differential seat angle of the adjacent test antenna away from the same distance of turntable 101 is 20 °, therefore, work as test days
When the circumferentially rotated angle of line covers 20 °, the scanning of full luffing angle is capable of achieving.
Refering to Fig. 4, the near field test system of the embodiment of the present invention 4 is similar to previous embodiment, and difference is antenna
Supporting construction 201 is linear, and the 5 first test antennas 301 and 4 second test antennas 302 being mounted thereon are linear
Arrangement, turntable 101 is located on test antenna center axis of symmetry, and Antenna support structure 201 can control to survey by rotating mechanism 401
Examination antenna moves along a straight line in its orientation.When turntable 101 completes 180 ° of rotation, you can obtain two away from measured piece not
The sample information of the circular flat of same distance.
Above-described embodiment only lists several situations and illustrates, and the quantity that antenna is tested in the present invention is merely illustrative, real
The quantity that antenna is tested in the application of border is multifactor to test frequency, testing radius, antenna performance etc. related；Test days in embodiment
The arrangement mode of line, the rotating manner of turntable and angle/distance, the rotating manner of test antenna and angle/apart from merely illustrative,
Can be configured according to specific testing requirement in practical application, except hemisphere Surface scan, spherical scanning, plane in embodiment
Scanning is outer, also can realize cylinder scanning, or given shape by adjusting the rotating manner and angle/distance of turntable and test antenna
Scanning.
Above content is to combine specific/preferred embodiment further description made for the present invention, it is impossible to recognized
Fixed specific implementation of the invention is confined to these explanations.For general technical staff of the technical field of the invention,
Without departing from the inventive concept of the premise, its implementation method that can also have been described to these makes some replacements or modification,
And these are substituted or variant should all be considered as belonging to protection scope of the present invention.
Claims (6)
1. a kind of near field test system, including anechoic chamber, turntable, N number of test antenna (N is natural number and N ＞ 1), antenna branch
Support structure, it is characterised in that the test antenna is installed on Antenna support structure with the distance different away from turntable at least two.
2. near field test system as claimed in claim 1, it is characterised in that the Antenna support structure also includes a rotation
Mechanism.
3. near field test system as claimed in claim 1, it is characterised in that the test antenna is arranged in circular arc, described
Turntable is located at the home position of the circular arc.
4. near field test system as claimed in claim 1, it is characterised in that the test antenna is in circular arrangement, described
Turntable is located at the home position of the annulus.
5. the near field test system as described in any in claim 3 or 4, it is characterised in that the Antenna support structure is also wrapped
Include a circumferentially rotated rotating mechanism of control test antenna.
6. near field test system as claimed in claim 5, it is characterised in that the Antenna support structure is circumferentially rotated
Maximum of the angle less than or equal to the differential seat angle of adjacent test antenna away from turntable same distance.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710215173.9A CN106872801B (en) | 2017-04-02 | 2017-04-02 | Near field test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710215173.9A CN106872801B (en) | 2017-04-02 | 2017-04-02 | Near field test system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106872801A true CN106872801A (en) | 2017-06-20 |
| CN106872801B CN106872801B (en) | 2024-04-30 |
Family
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710215173.9A Active CN106872801B (en) | 2017-04-02 | 2017-04-02 | Near field test system |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367641A (en) * | 2017-07-26 | 2017-11-21 | 深圳市艾励美特科技有限公司 | Aerial signal detection means |
| CN108828347A (en) * | 2018-04-24 | 2018-11-16 | 青岛中电绿网新能源有限公司 | Electronic circuit EMI sensitizing range positioning measurment system and locating measurement method based on near-far field transformation algorithm |
| CN109905185A (en) * | 2019-03-06 | 2019-06-18 | 鹰视云(深圳)科技有限公司 | A kind of full airspace phased array antenna calibration system and method based on aircraft |
| CN110412360A (en) * | 2019-07-02 | 2019-11-05 | 深圳市新益技术有限公司 | Shrunk type vehicle antenna radio-frequency performance test macro |
| CN110456167A (en) * | 2018-05-08 | 2019-11-15 | 西安光启尖端技术研究院 | Beam forming method and device for measuring array antenna |
| CN111726176A (en) * | 2019-11-01 | 2020-09-29 | 深圳市通用测试***有限公司 | Wireless performance test method, device, system, equipment and storage medium of wireless equipment |
| CN112255469A (en) * | 2020-08-31 | 2021-01-22 | 西安空间无线电技术研究所 | Antenna arbitrary curved surface near field test phase acquisition device and method without reference signal |
| CN112946377A (en) * | 2019-12-10 | 2021-06-11 | 深圳市通用测试***有限公司 | Vehicle wireless performance test darkroom |
| CN113242101A (en) * | 2020-01-22 | 2021-08-10 | 深圳市通用测试***有限公司 | Radio frequency performance test method and system for wireless equipment |
| CN114221715A (en) * | 2021-12-09 | 2022-03-22 | 深圳市通用测试***有限公司 | Test system and test method |
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Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107367641A (en) * | 2017-07-26 | 2017-11-21 | 深圳市艾励美特科技有限公司 | Aerial signal detection means |
| CN108828347A (en) * | 2018-04-24 | 2018-11-16 | 青岛中电绿网新能源有限公司 | Electronic circuit EMI sensitizing range positioning measurment system and locating measurement method based on near-far field transformation algorithm |
| CN110456167A (en) * | 2018-05-08 | 2019-11-15 | 西安光启尖端技术研究院 | Beam forming method and device for measuring array antenna |
| US11533112B2 (en) | 2018-05-08 | 2022-12-20 | Kuang-Chi Institute Of Advanced Technology | Beam synthesis method and apparatus for measuring array antenna |
| CN109905185A (en) * | 2019-03-06 | 2019-06-18 | 鹰视云(深圳)科技有限公司 | A kind of full airspace phased array antenna calibration system and method based on aircraft |
| CN109905185B (en) * | 2019-03-06 | 2021-07-02 | 鹰视云(深圳)科技有限公司 | Full-space phased array antenna calibration system and method based on aircraft |
| CN110412360A (en) * | 2019-07-02 | 2019-11-05 | 深圳市新益技术有限公司 | Shrunk type vehicle antenna radio-frequency performance test macro |
| CN111726176A (en) * | 2019-11-01 | 2020-09-29 | 深圳市通用测试***有限公司 | Wireless performance test method, device, system, equipment and storage medium of wireless equipment |
| CN112946377A (en) * | 2019-12-10 | 2021-06-11 | 深圳市通用测试***有限公司 | Vehicle wireless performance test darkroom |
| CN113242101A (en) * | 2020-01-22 | 2021-08-10 | 深圳市通用测试***有限公司 | Radio frequency performance test method and system for wireless equipment |
| CN112255469A (en) * | 2020-08-31 | 2021-01-22 | 西安空间无线电技术研究所 | Antenna arbitrary curved surface near field test phase acquisition device and method without reference signal |
| CN112255469B (en) * | 2020-08-31 | 2023-12-12 | 西安空间无线电技术研究所 | Antenna arbitrary curved surface near field test phase acquisition device and method without reference signal |
| CN114221715A (en) * | 2021-12-09 | 2022-03-22 | 深圳市通用测试***有限公司 | Test system and test method |
| CN114221715B (en) * | 2021-12-09 | 2023-09-12 | 深圳市通用测试***有限公司 | Test system and test method |
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| CN106872801B (en) | 2024-04-30 |
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