CN206573642U - The test system of active antenna for base station three dimensions far field radiation characteristics - Google Patents
The test system of active antenna for base station three dimensions far field radiation characteristics Download PDFInfo
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Abstract
The utility model discloses the test system of active antenna for base station three dimensions far field radiation characteristics, it is intended to which solution can not draw the shortcoming of far field ERP and EIS result in the prior art, and its drip irrigation device is：A kind of active antenna for base station three dimensions radiates the test system of field phase, including signal source, source base station antenna surrounding is wound with to be distributed in a ring and the Multi probe array apparatus of spherical detection faces can be formed, the switch matrix for switching multiple probes is electrically connected with the Multi probe array apparatus, it is electrically connected with the switch matrix for receiving and handling the test data of the Multi probe array apparatus and generate the signal analyzer of radiation amplitude and phase data, and it is equipped with the signal processing apparatus for being calculated and being handled the signal processing software to generate the far field ERP with range value and EIS data for radiation amplitude and phase data to generation.Test system of the present utility model has the advantages that far field ERP and EIS result can be drawn.
Description
Technical field
The utility model is related to antenna measurement technical field, more specifically, it relates to active antenna for base station three dimensions
The test system of far field radiation characteristics.
Background technology
It is current that as 5G communication forms are clear, the application of antenna for base station enters the activeization stage, that is, antenna for base station and
Base station system is progressively united, and forms active antenna for base station, and actually active antenna for base station can be understood as a kind of communication
System rather than simple antenna, traditional non-source test field can not meet the spatial radiation characteristic test of active antenna for base station.
It is desirable to describe the radiance of active antenna for base station using this parameter of ERP and EIS, upward by space each party
ERP and EIS draws the antenna pattern of active antenna for base station, but ERP and EIS are built upon on the basis of modulated signal,
It can be understood as only amplitude information and do not include the phase information that space radiation is brought.It is well known that near field measurement I
Obtain the electric field amplitude and phase of point enough near field and can just extrapolate the far-field pattern of the tested antenna, amplitude
It is indispensable with phase.The ERP and EIS read near field measurement is near-field results, to expect that far field is described, also need
Obtain phase information.
Application No. 201621052153.1, patent name is " one kind is used for active antenna for base station or base station system OTA
Can test system and method " Chinese patent disclose the method for obtaining ERP and EIS, far field ERP that this method is obtained and
EIS results are without phase information.
Utility model content
In view of the deficienciess of the prior art, the purpose of this utility model is to provide a kind of active antenna for base station three-dimensional space
Between far field radiation characteristics test system, have the advantages that far field ERP and EIS result can be drawn.
Above-mentioned technical purpose of the present utility model technical scheme is that：A kind of active antenna for base station
Three dimensions radiates the test system of field phase, including is electrically connected with multiple radiating elements of active antenna for base station for providing
Multichannel can phase modulation radiofrequency signal signal source, be wound with source base station antenna surrounding and be distributed in a ring and spherical detection faces can be formed
Multi probe array apparatus, with the Multi probe array apparatus be electrically connected with for switch multiple probes switch matrix, with it is described
Switch matrix is electrically connected with the test data for receiving and handling the Multi probe array apparatus and generates radiation amplitude and phase
The signal analyzer of position data and it is equipped with and is calculated and handled with life for radiation amplitude and phase data to generation
Into the far field ERP with range value and the signal processing apparatus of the signal processing software of EIS data.
By using above-mentioned technical proposal, active antenna for base station is carried out to the test of radiation characteristic as measured object, it is active
Antenna for base station has multiple radiating elements, can to three dimensions feed-in multichannel controllable signal；During test, control signal source is to having
Source base station antenna feed-in multichannel controllable signal, makes multiple radiating elements of active antenna for base station controllable to three dimensions feed-in multichannel
Multiple probes in Multi probe array apparatus are switched over by signal followed by switch matrix, obtain whole spherical detection faces
Test data, then test data is handled using signal analyzer, you can obtain the near-field thermal radiation width of whole sphere
Degree and phase data, are calculated and are handled far field ERP and the EIS number drawn with range value eventually through signal processing software
According to.
The present invention is further arranged to：The Multi probe array apparatus includes mounting ring, is arranged in the mounting ring
Multiple probes, it is rotatably connected on and is used for the plummer for being placed with source base station antenna in turret base and for driving described hold
Microscope carrier is rotated to form the drive device of detection sphere, and active antenna for base station is placed in the mounting ring center.
By using above-mentioned technical proposal, active antenna for base station is located at multi-probe center, and multiple probes can be to having
Source base station antenna carries out equidistant test, drives plummer to rotate by drive device, is being tested with source base station antenna one
Next tangent plane is can switch to after the data of individual tangent plane and carries out Data Detection, the radiation amplitude and phase of whole sphere is finally drawn
Position data.
The present invention is further arranged to：The drive device includes motor, is fixed in the motor rotating shaft
Drive gear and the driven gear that is fixed on the plummer and is engaged with the drive gear.
By using above-mentioned technical proposal, start motor, motor drives drive gear to rotate, thus drive from
Moving gear is rotated, and then the plummer active antenna for base station of drive that rotates is relatively rotated and is formed relative to mounting ring
Detect sphere.
The present invention is further arranged to：The probe is popped one's head in for the dual polarization of square crossing.
By using above-mentioned technical proposal, dual polarization probe has H polarization and V two polarized states of polarization, so as to
Two groups of data are detected under two polarized states respectively.
The present invention is further arranged to：The motor uses servomotor.
By using above-mentioned technical proposal, the controllability of servomotor is higher, the angle for more facilitating control plummer to rotate
Degree.
In summary, the invention has the advantages that：
First, passing through Multi probe array apparatus, switch matrix and signal analyzer, you can be tested with source base station antenna
The radiating phase data in whole sphere near field, and by signal processing software, finally draw far field ERP and EIS with range value
Data, realize the whole process that near-field space scope obtain former field ERP and EIS results；
Second, driving plummer to rotate to form detection sphere by servomotor, controllability is good, accuracy of detection is high；
Third, probe is popped one's head in for the dual polarization of square crossing, two groups of numbers can be detected under two polarized states respectively
According to.
Brief description of the drawings
Fig. 1 be in embodiment one signal source to the schematic diagram for having source base station feed-in multiple signals；
Fig. 2 is the structural representation of embodiment one；
Fig. 3 is the flow chart of embodiment two.
In figure：1st, active antenna for base station；11st, radiating element；2nd, signal source；31st, mounting ring；32nd, pop one's head in；33rd, plummer；
341st, motor；342nd, drive gear；343rd, driven gear；4th, switch matrix；5th, signal analyzer；6th, RF cable；7、
Signal processing software.
Embodiment
With reference to the accompanying drawings and examples, the utility model is described in detail.
Embodiment one：A kind of active antenna for base station three dimensions radiates the test system of field phase, as shown in figure 1, active
There are multiple radiating elements 11, radiating element 11 is connected with signal source 2 by RF cable 6, and signal source 2 is on antenna for base station 1
Radiating element 11 provides multichannel can phase modulation radiofrequency signal；
As shown in Fig. 2 being externally provided with the array apparatus of Multi probe 32 in active antenna for base station 1, the array apparatus of Multi probe 32 includes
Mounting ring 31, multiple probes 32, plummer 33 and drive device；Multiple probes 32 are fixed on mounting ring 31 by radio frequency interface
On, and be uniformly distributed around the axis direction of mounting ring 31, active antenna for base station 1 is placed in the center of mounting ring 31, probe 32
Using the dual polarization probe 32 of square crossing, it has H polarization and V two polarized states of polarization, so as to respectively at two
Two groups of data are detected under polarized state；Plummer 33 is rotatably connected in turret base, and is located at mounting ring in plummer 33
Thick pillar is fixed with 31 center, the lower surface of plummer 33, active antenna for base station 1 is placed on plummer 33, carried
Platform 33 can drive active antenna for base station 1 to rotate when rotating, it will usually darkroom is provided with outside test system, and turret base is set
The bottom in darkroom；
As shown in Fig. 2 drive device includes motor 341, drive gear 342 and driven gear 343, motor
341 have been bolted in source base station, and motor 341 uses servomotor, and control more convenient and control accuracy is more
Height, drive gear 342 is set in the rotating shaft of motor 341, and driven gear 343 is set on plummer 33 and and driving tooth
Wheel is meshed, so as to start motor 341 plummer 33 can be driven to rotate.
As shown in Fig. 2 the array apparatus of Multi probe 32 is electrically connected with switch matrix 4 by cable, switch matrix 4 is used to cut
The multiple probes 32 changed in the array apparatus of Multi probe 32 and polarization, so that respectively probe 32 is in H polarized states and V polarized states
One group of data of lower detection；Switch matrix 4 is electrically connected with signal analyzer 5 by cable, and signal analyzer 5 receives multiple probes
32 test datas detected, and computing and processing are carried out, draw near-field thermal radiation amplitude and phase data, usual signal analyzer
5 use Network Analyzer；Signal analyzer 5 is electrically connected with signal processing apparatus, signal processing apparatus by cable and carried
There is a signal processing software 7, signal processing software 7 is by the ERP and EIS data near field and the near-field thermal radiation amplitude and number of phases that measure
According to carrying out integrating computing and processing, far field ERP and EIS data with range value are finally drawn.
During test, control signal source 2 makes the radiation list of active antenna for base station 1 to active antenna for base station 1 transmitting controllable signal
Member 11 launches controllable signal to three dimensions, and multiple probes in the array apparatus of Multi probe 32 are switched followed by switch matrix 4
32 and polarization, draw the data in active 1 one tangent planes of antenna for base station, then start motor 341, drive plummer 33
Rotate, and then drive active antenna for base station 1 to turn to another tangent plane, the angle of rotation can be according to tested active antenna for base station
Data volume needed for 1 is determined, is switched multiple probes 32 and arrays again by switch matrix 4, is drawn the number in the tangent plane
According to, by that analogy, until mounting ring 31 is rotated after one complete detection sphere of formation, completion Data Detection；Each probe 32 is examined
The data measured are sent to signal analyzer 5, and signal analyzer 5 can draw the amplitude of near-field thermal radiation after carrying out computing and processing
And phase data, and send to signal processing software 7, signal processing software 7 by the ERP and EIS data near field with measure it is near
Field radiation amplitude and phase data carry out integrating computing and processing, finally draw far field ERP and EIS data with range value.
Embodiment two：A kind of active antenna for base station three dimensions radiates the method for testing of field phase, as shown in figure 3, including
Step one：Control signal source 2 receives the signal to the active feed-in multichannel controllable signal of antenna for base station 1, active antenna for base station 1
Afterwards, multiple radiating elements 11 of active antenna for base station send controllable signal in response to the signal to three dimensions；
Step 2：Multiple probes 32 and polarization are switched by switch matrix 4, H polarization and the V poles of each probe 32 are made successively
Change one group of detection and send to signal analyzer 5, signal analyzer 5 carries out computing and processing draws the one of active antenna for base station 1
Radiation amplitude and phase data in individual tangent plane；
Step 3：Control motor 341 drives plummer 33 to rotate, and active antenna for base station 1 is turned to another and cuts
Face, the radiation amplitude and phase data tested in the tangent plane is simultaneously sent to signal analyzer 5, signal analyzer 5 carry out computing and
Processing draws radiation amplitude and phase data in the tangent plane of active antenna for base station 1, and the data that probe 32 is detected are with plural number
Form transmit to signal analyzer 5, according to the real part and the numerical value of imaginary part, you can extrapolate amplitude and phase value；Such as
The data that probe 32 is measured are sent to signal analyzer in the form of a+bi, are computed that range value can be drawn
Phase value
Step 4：The test process of repeat step three, until mounting ring 31 is complete relative to active antenna for base station 1 formation one
Into detection sphere so that obtaining whole sphere near field width penetrates amplitude and phase data, that is, obtain near field ERP and EIS data and
The radiation amplitude and phase data detected, ERP the and EIS numbers in far field can be extrapolated by the radiation amplitude and phase data
According to so as to preferably describe the overall performance of active antenna for base station 1；
Step 5；Go out the antenna spoke of the purely whole sphere of active antenna element (AAU) by existing test system and test
Penetrate near field EISNAnd ERPN, it is used as the reference data for calculating far field ERP and EIS；
Step 6：Use ERPN、EISNSubstitute range value AN, obtain intermediate variable AN1、AN2, with reference to phase value PNCarry out near remote
Calculation process, because far field ERP and EIS and amplitude are, with linear dependence, thus can to extrapolate the ERP in far field
And EIS data, two steps of its calculation step including calculating far field ERP and EIS respectively：
Calculating far field ERP steps is, first basisDraw intermediate variable AN1, further according to
And PNDraw intermediate variable ERP far field amplitude AF1, final basisDraw the far field ERP with range valueFKnot
Really；Calculating far field EIS steps is, first basisDraw intermediate variable AN2, further according toAnd PN
Go out intermediate variable EIS far field amplitude AF2, final basisDraw the far field EIS with range valueFAs a result；
Step 7：Draw far field ERPFAnd EISFAfterwards, corrected by contrasting compensation method, contrast compensation method be by
EIS and ERP values that the EIS and ERP values or far field test of golden machine go out and the far field ERPF measured using the patented method and
EISF is contrasted, so as to draw the relation between actual value and test value, for golden machine, its far field EIS and ERP's
The information such as amplitude and phase is all known, in the case where golden machine quantity is enough, can draw the pass between actual value and test
System, after overcorrection, the far field ERP drawnFAnd EISFValue is more accurate.
The radiation amplitude and phase data in active one tangent plane of antenna for base station are first obtained, then is obtained successively in multiple tangent planes
Radiation amplitude and phase data, finally obtain whole sphere near-field thermal radiation amplitude and phase data, pass through the survey of prior art
Method for testing measures near field EISNAnd ERPN, and combine the near-field thermal radiation amplitude detected and phase data ANAnd PN, you can draw
ERP and EIS far field amplitude AF1And AF2, because far field ERP and EIS with amplitude is linear correlation, thus can push away
Calculate the ERP and EIS data in far field.
Described above is only preferred embodiment of the present utility model, and protection domain of the present utility model is not limited merely to
Above-described embodiment, all technical schemes belonged under the utility model thinking belong to protection domain of the present utility model.It should refer to
Go out, for those skilled in the art, some improvement under the premise of the utility model principle is not departed from and
Retouching, these improvements and modifications also should be regarded as protection domain of the present utility model.
Claims (5)
1. a kind of test system of active antenna for base station three dimensions far field radiation characteristics, it is characterised in that：Including with active base
Multiple radiating elements (11) of station antenna (1) be electrically connected with for provide multichannel can phase modulation radiofrequency signal signal source (2), be wound with
Source base station antenna (1) surrounding is distributed and can form Multi probe (32) array apparatus of spherical detection faces and be described many in a ring
Probe (32) array apparatus is electrically connected with switch matrix (4) and the switch matrix (4) electricity for switching multiple probes (32)
Property is connected to receive and handled the test data of the Multi probe (32) array apparatus and generates radiation amplitude and phase data
Signal analyzer (5) and be equipped with for radiation amplitude and phase data to generation calculated and handled with generate
The signal processing apparatus of the signal processing software (7) of far field ERP and EIS data with range value.
2. the test system of active antenna for base station three dimensions far field radiation characteristics according to claim 1, its feature exists
In：Multi probe (32) array apparatus include mounting ring (31), be arranged in the mounting ring (31) multiple probes (32),
Being rotatably connected in turret base is used to be placed with the plummer (33) of source base station antenna (1) and for driving the carrying
Platform (33) is rotated to form the drive device of detection sphere, and active antenna for base station (1) is placed in the mounting ring (31) center.
3. the test system of active antenna for base station three dimensions far field radiation characteristics according to claim 2, its feature exists
In：The drive device includes motor (341), the drive gear being fixed in the motor (341) rotating shaft
And the driven gear (343) that is fixed on the plummer (33) and is engaged with the drive gear (342) (342).
4. the test system of active antenna for base station three dimensions far field radiation characteristics according to claim 2, its feature exists
In：The probe (32) pops one's head in (32) for the dual polarization of square crossing.
5. the test system of active antenna for base station three dimensions far field radiation characteristics according to claim 3, its feature exists
In：The motor (341) uses servomotor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201621318378.7U CN206573642U (en) | 2016-12-03 | 2016-12-03 | The test system of active antenna for base station three dimensions far field radiation characteristics |
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| CN201621318378.7U CN206573642U (en) | 2016-12-03 | 2016-12-03 | The test system of active antenna for base station three dimensions far field radiation characteristics |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443209A (en) * | 2016-12-03 | 2017-02-22 | 刘科宏 | Test system and method for active base station antenna three-dimensional space distant field radiation characteristics |
| CN109765437A (en) * | 2019-03-06 | 2019-05-17 | 鹰视云(深圳)科技有限公司 | A kind of the simulation curved surface calibration system and method for full airspace phased array antenna |
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2016
- 2016-12-03 CN CN201621318378.7U patent/CN206573642U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106443209A (en) * | 2016-12-03 | 2017-02-22 | 刘科宏 | Test system and method for active base station antenna three-dimensional space distant field radiation characteristics |
| CN106443209B (en) * | 2016-12-03 | 2023-09-29 | 刘科宏 | System and method for testing three-dimensional space far-field radiation characteristics of active base station antenna |
| CN109765437A (en) * | 2019-03-06 | 2019-05-17 | 鹰视云(深圳)科技有限公司 | A kind of the simulation curved surface calibration system and method for full airspace phased array antenna |
| CN109765437B (en) * | 2019-03-06 | 2021-11-09 | 鹰视云(深圳)科技有限公司 | System and method for calibrating simulated curved surface of full-space phased array antenna |
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Effective date of registration: 20220126 Address after: 518000 No. 6, Tanxiang village, Lingshan Town, Meilan District, Shenzhen, Guangdong Patentee after: Xinyi Technology (Shenzhen) Co.,Ltd. Address before: 571126 No. 6, Tanxiang village, Lingshan Town, Meilan District, Haikou City, Hainan Province Patentee before: Liu Kehong |