CN108020729A - The active standing wave test system and test method of a kind of extensive antenna - Google Patents
The active standing wave test system and test method of a kind of extensive antenna Download PDFInfo
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- CN108020729A CN108020729A CN201711229499.3A CN201711229499A CN108020729A CN 108020729 A CN108020729 A CN 108020729A CN 201711229499 A CN201711229499 A CN 201711229499A CN 108020729 A CN108020729 A CN 108020729A
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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
- G01R29/10—Radiation diagrams of antennas
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Abstract
The present invention proposes the active standing wave test system and test method of a kind of extensive antenna.The active standing wave test system of extensive antenna includes signal source, wave beam unit, active standing wave test cell, signal source is used to send radiofrequency signal, wave beam unit receives above-mentioned radiofrequency signal, adjust the amplitude and phase of radiofrequency signal, reach the default Effect value of wave beam, active standing wave test cell collection wave beam unit sends the power of signal and the signal power of tested antenna-reflected, and by the signal output collected to back-end processor.The active standing wave test system and test method of a kind of extensive antenna effectively can carry out antenna array validation test, more ensure the integrality and reliability of antenna array test.
Description
Technical field
The invention belongs to radio frequency automatic test field, particularly a kind of active standing wave for extensive antenna tests system
System and test method.
Background technology
As Massive MIMO technologies are incorporated into 5G cellular radios, the high speed Validity Test of extensive antenna is urgently
Solve the problems, such as.Legacy cellular antenna and extensive mimo antenna working method have difference substantially, traditional test antenna
Standing wave test only test its passive standing wave, the typical case's test of aerial array before is each using vector network analyzer test
The S parameter of parasitic element rear end, including passive standing wave, isolation and PIM.But in Massive MIMO phased arrays
Among test, it is inadequate only to verify passive standing wave, in the state of phased array antenna normal work, tests its active standing wave
It is only the effective ways to array antenna test.But not yet there is the method or system tested active standing wave at present.
The content of the invention
Technical problem solved by the invention is that providing a kind of active standing wave for extensive antenna tests system.
The technical solution for realizing the object of the invention is：A kind of active standing wave test system of extensive antenna, including
Signal source, wave beam unit, active standing wave test cell；
The signal source is used to send radiofrequency signal；
The wave beam unit receives above-mentioned radiofrequency signal, adjusts the amplitude and phase of radiofrequency signal, it is pre- to reach wave beam
If Effect value；
Active standing wave test cell collection wave beam unit sends the power of signal and the signal power of tested antenna-reflected,
And by the signal output collected to back-end processor.
Present invention also offers a kind of active standing wave test method for extensive antenna, concretely comprise the following steps：
Step 1, structure test environment；
Step 2, signal source send radiofrequency signal RF1；
Step 3, by radiofrequency signal RF1It is divided into x stream radiofrequency signals RF1-1~RF1-x；Change respectively and believe per first-class radio frequency
Number amplitude and phase, reach the default Effect value of wave beam；
The signal power of step 4, the power of collection x stream radiofrequency signals and tested antenna-reflected；
Step 5, by standing wave algorithm be calculated standing wave information, exports active standing wave test result.
Compared with prior art, remarkable advantage is the present invention:1) present invention firstly provides surveyed for active standing wave
The method and system of examination, compensate for the deficiencies in the prior art；2) active standing wave of the invention test is in the complete work of antenna oscillator
Make the test result under state, closer to being tested under the real use environment of product；3) active standing wave test method of the invention
Validation test can be effectively carried out to antenna array, more ensures the integrality and reliability of antenna array test.
Brief description of the drawings
Fig. 1 is the system testing environment topology figure of the present invention.
Embodiment
With reference to shown in Fig. 1, the active standing wave test system of extensive antenna of the invention, including sequentially connected signal
Source, wave beam unit, active standing wave test cell, wherein：
Signal source is used to send radiofrequency signal；
Wave beam unit receives above-mentioned radiofrequency signal, adjusts the amplitude and phase of radiofrequency signal, it is default to reach wave beam
Effect value；
Active standing wave test cell collection wave beam unit sends the power of signal and the signal power of tested antenna-reflected,
And by the signal output collected to back-end processor.
Preferably, signal source, wave beam unit, the prevention at radio-frequency port of active standing wave test cell are connected by RF cable,
Each prevention at radio-frequency port can both connect one to one, also can be with interconnection, as long as its connection guarantee meets the function of each unit i.e.
Can.
Preferably, the original radio frequency signal that signal source exports is divided into x stream radiofrequency signals RF by wave beam unit1-1~RF1-x, its
Middle x is the number of the antenna element unit of tested antenna；The x stream radiofrequency signals of reception are divided into two-way by the active standing wave unit
Signal, flows strong signal RF for x all the way1-1-1~RF1-1-x, another way is x stream weak signals RF1-2-1~RF1-2-x, and x is flowed into strong signal
RF1-1-1~RF1-1-xExport to tested antenna, while the x current test signals that active standing wave unit returns tested antenna-reflected
RF1-3-1~RF1-3-xAnd x stream weak signals RF1-2-1~RF1-2-xDigital signal is converted to, gathers its amplitude and phase information.
Preferably, wave beam unit includes x channel, and each channel is equipped with decay and phase shifting control component, for controlling x
Flow radiofrequency signal RF1-1~RF1-xAmplitude and phase.
Preferably, active standing wave test cell is equipped with x coupling channel, and being equipped with radiofrequency signal on each coupling channel connects
Device and A/D converter are received, the x current test signals RF returned for gathering tested antenna-reflected1-3-1~RF1-3-xAnd x flows weak letter
Number RF1-2-1~RF1-2-xAnd it is converted into digital signal.
In the present embodiment, signal source is used for producing radiofrequency signal, it is the information source offer part of active test.
Wave beam unit, it is defeated for adjusting i.e. change and/or the subsystem element of fixed RF signal amplitude and phase, side
Inbound port A1 is connected with signal source, opposite side output port output port B1~BxConnected with active standing wave unit, in wave beam unit
Portion shares x independent channels, and radiofrequency signal first passes around power distributing circuit in wave beam unit, can form x streams and uniformly divide
The radiofrequency signal matched somebody with somebody, i.e. radiofrequency signal have been divided into x stream radiofrequency signals RF in equal size1-1~RF1-x, by exporting prevention at radio-frequency port B1~
BxReach active standing wave test cell C1~Cx；There are decay and phase shifting control component on each channel, x can be flowed at the same time
Control of the radiofrequency signal into line amplitude and phase.For phased-array antenna array, the amplitude and phase of FD feed are changed
Position, also just changes its beam direction angle.Wherein, power distributing circuit is made of some power splitters.
Active standing wave test cell, it is mainly to be made of termination power that it is internal, and a total of x coupling measurement passage can
With the radiofrequency signal passed through to x streams, their power is gathered in real time, to reach test purpose.Active standing wave test cell flows x
Radiofrequency signal RF1-1~RF1-xIt is divided into two paths of signals, flows strong signal RF all the way for x1-1-1~RF1-1-x, another way is x stream weak signals
RF1-2-1~RF1-2-x, and x is flowed into strong signal RF1-1-1~RF1-1-xOutput to tested antenna, antenna array obtains radiofrequency signal
RF1-1-1~RF1-1-xDimensional energy wave beam is formed as active system, antenna array can be by emission of radio frequency signals to ripple darkroom is inhaled, together
When, due to x stream strong signals RF1-1-1~RF1-1-xEnergy cannot be received by antenna array completely, and x antenna element passage can all have
Portion of energy reflects, that is, is reflected back x current test signals RF1-3-1~RF1-3-x.Each coupling is logical for active standing wave test cell
Radio frequency signal receiver and A/D converter are equipped with road, the x current test signals returned for gathering tested antenna-reflected
RF1-3-1~RF1-3-xAnd x stream weak signals RF1-2-1~RF1-2-xAnd be converted into digital signal, then by the signal input to
Control system processing, calculates standing wave value.
Tested antenna (Antenna Arrays) is passive array, its x radio frequency interface and the test of active standing wave are single
Member connection, the radiofrequency signal that signal source is sent reach antenna array by wave beam unit and active standing wave test cell, then radiate
Go out, absorbed by darkroom.
Present invention also offers a kind of active standing wave test method of extensive antenna, concretely comprise the following steps：
Tested antenna, is specially placed in and inhales ripple darkroom or suction ripple magazine by step 1, structure test environment；
Step 2, signal source send radiofrequency signal RF1；
Step 3, by radiofrequency signal RF1It is divided into x stream radiofrequency signals RF1-1~RF1-x；Change respectively and believe per first-class radio frequency
Number amplitude and phase, reach the default Effect value of wave beam；
The signal power of the power of signal and tested antenna-reflected in step 4, acquisition step 3；Concretely comprise the following steps：
Step 4-1, by the radiofrequency signal RF in step 31-1~RF1-xIt is divided into two-way test signal, flows strong test all the way for x
Signal RF1-1-1~RF1-1-x, the weak test signal RF of another way x streams1-2-1~RF1-2-x；
Step 4-2, x is flowed into the x antenna element unit that strong test signal is separately input into tested antenna；
X antenna element unit of step 4-3, tested antenna is reflected back x current test signals RF1-3-1~RF1-3-x；
Step 4-4, x is flowed into weak test signal RF1-2-1~RF1-2-xAnd the x current test signals that antenna element unit is reflected back
RF1-3-1~RF1-3-xDigital signal is converted to, gathers its amplitude and phase information.
Step 5, by standing wave algorithm be calculated standing wave information, exports active standing wave test result.
It is complete in antenna oscillator that active standing wave proposed by the present invention for extensive antenna, which tests system and test method,
Test result under full working condition, closer to being tested under the real use environment of product, and traditional means of testing can only be single
Solely verify the test result of each oscillator, the correlation between oscillator can not be tested.And antenna array is in different beam angles
Under each oscillator performance and correlation it is all different, traditional S parameter method can not carry out it validation test, and active standing wave
Test method but can effectively solve the problem that the test problem, more ensure the integrality and reliability of antenna array test.
Claims (8)
1. the active standing wave test system of a kind of extensive antenna, it is characterised in that including signal source, wave beam unit, active stay
Ripple test cell；
The signal source is used to send radiofrequency signal；
The wave beam unit receives above-mentioned radiofrequency signal, adjusts the amplitude and phase of radiofrequency signal, it is default to reach wave beam
Effect value；
Active standing wave test cell collection wave beam unit sends the power of signal and the signal power of tested antenna-reflected, and will
The signal output collected is to back-end processor.
2. active standing wave test system according to claim 1, it is characterised in that signal source, wave beam unit, active standing wave
The prevention at radio-frequency port of test cell is connected by RF cable.
3. active standing wave test system according to claim 1, it is characterised in that the wave beam unit exports signal source
Original radio frequency signal be divided into x streams radiofrequency signal RF1-1~RF1-x, wherein x is the number of the antenna element unit of tested antenna；
The x stream radiofrequency signals of reception are divided into two paths of signals by the active standing wave unit, flow strong signal RF all the way for x1-1-1~RF1-1-x,
Another way flows weak signal RF for x1-2-1~RF1-2-x, and x is flowed into strong signal RF1-1-1~RF1-1-xOutput has at the same time to tested antenna
The x current test signals RF that source standing wave unit returns tested antenna-reflected1-3-1~RF1-3-xAnd x stream weak signals RF1-2-1~RF1-2-x
Digital signal is converted to, gathers its amplitude and phase information.
4. the active standing wave test system of extensive antenna according to claim 1, it is characterised in that the wave beam unit
Including x channel, each channel is equipped with decay and phase shifting control component, for controlling x stream radiofrequency signals RF1-1~RF1-x's
Amplitude and phase.
5. the active standing wave test system of extensive antenna according to claim 1, it is characterised in that the active standing wave
Test cell is equipped with x coupling channel, is equipped with radio frequency signal receiver and A/D converter on each coupling channel, is used for
The x current test signals RF that the tested antenna-reflected of collection is returned1-3-1~RF1-3-xAnd x stream weak signals RF1-2-1~RF1-2-xAnd by its turn
It is changed to digital signal.
6. a kind of test method of the active standing wave test system of extensive antenna based on described in claim 1, its feature exist
In concretely comprising the following steps：
Step 1, structure test environment；
Step 2, signal source send radiofrequency signal RF1；
Step 3, by radiofrequency signal RF1It is divided into x stream radiofrequency signals RF1-1~RF1-x；Change respectively per first-class radiofrequency signal
Amplitude and phase, reach the default Effect value of wave beam；
The signal power of step 4, the power of collection x stream radiofrequency signals and tested antenna-reflected；
Step 5, by standing wave algorithm be calculated standing wave information, exports active standing wave test result.
7. the active standing wave test method of extensive antenna according to claim 6, it is characterised in that built in step 1
Tested antenna, is specially placed in and inhales ripple darkroom or suction ripple magazine by test environment.
8. the active standing wave test method of extensive antenna according to claim 6, it is characterised in that gathered in step 4
The signal power of the power of signal and tested antenna-reflected, concretely comprises the following steps：
Step 4-1, by the radiofrequency signal RF in step 31-1~RF1-xIt is divided into two-way test signal, flows strong test signal all the way for x
RF1-1-1~RF1-1-x, the weak test signal RF of another way x streams1-2-1~RF1-2-x；
Step 4-2, x is flowed into the x antenna element unit that strong test signal is separately input into tested antenna；
X antenna element unit of step 4-3, tested antenna is reflected back x current test signals RF1-3-1~RF1-3-x；
Step 4-4, x is flowed into weak test signal RF1-2-1~RF1-2-xAnd the x current test signals that antenna element unit is reflected back
RF1-3-1~RF1-3-xDigital signal is converted to, gathers its amplitude and phase information.
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| CN201711229499.3A CN108020729A (en) | 2017-11-29 | 2017-11-29 | The active standing wave test system and test method of a kind of extensive antenna |
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| CN201711229499.3A CN108020729A (en) | 2017-11-29 | 2017-11-29 | The active standing wave test system and test method of a kind of extensive antenna |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110361602A (en) * | 2019-07-17 | 2019-10-22 | 上海频语电子技术有限公司 | A kind of antenna for mobile phone standing wave tester and the method using its progress standing wave test |
| CN110873824A (en) * | 2018-08-31 | 2020-03-10 | 南京捷希科技有限公司 | Massive MIMO antenna test system and method |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110873824A (en) * | 2018-08-31 | 2020-03-10 | 南京捷希科技有限公司 | Massive MIMO antenna test system and method |
| CN110361602A (en) * | 2019-07-17 | 2019-10-22 | 上海频语电子技术有限公司 | A kind of antenna for mobile phone standing wave tester and the method using its progress standing wave test |
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Application publication date: 20180511 |