CN108988960A - Multi-input/output antenna handling capacity measurement system - Google Patents
Multi-input/output antenna handling capacity measurement system Download PDFInfo
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- CN108988960A CN108988960A CN201710397712.5A CN201710397712A CN108988960A CN 108988960 A CN108988960 A CN 108988960A CN 201710397712 A CN201710397712 A CN 201710397712A CN 108988960 A CN108988960 A CN 108988960A
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- antenna
- input
- vector signal
- handling capacity
- output
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0085—Monitoring; Testing using service channels; using auxiliary channels using test signal generators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/0082—Monitoring; Testing using service channels; using auxiliary channels
- H04B17/0087—Monitoring; Testing using service channels; using auxiliary channels using auxiliary channels or channel simulators
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B17/00—Monitoring; Testing
- H04B17/30—Monitoring; Testing of propagation channels
- H04B17/309—Measuring or estimating channel quality parameters
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04B—TRANSMISSION
- H04B7/00—Radio transmission systems, i.e. using radiation field
- H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
- H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
- H04B7/0413—MIMO systems
Abstract
A kind of multi-input/output antenna handling capacity measurement system, including anechoic chamber, at least two transmitting antennas, at least two antenna, Vector Signal Generator, channel simulator, vector signal analyzer and software-defined radio modules to be measured.Transmitting antenna in anechoic chamber, is located at different location, and antenna to be measured is located at terminal installation module, to constitute multi-input multi-output system.Vector signal is provided to transmitting antenna by channel simulator by Vector Signal Generator, and channel simulator changes transmitted vector signal according to channel model.Vector signal analyzer analyzes the signal of antenna to be measured.Software-defined radio module link vector signal generator and vector signal analyzer, vector signal caused by dominant vector signal generator, and the result according to vector signal analyzer analysis obtains the handling capacity of multi-input multi-output system.Whereby, the efficiency that antenna can play in systems can more specifically and be rapidly assessed.
Description
Technical field
The present invention relates to a kind of antenna measurement systems, and in particular, to a kind of multi-input/output antenna is handled up amount measurement
System.
Background technique
The measurement technology of antenna radiation characteristics needs good measurement environment, such as anechoic chamber, (anechoicchamber)
And accurately measuring instrument.Traditionally, whether antenna radiation patterns, antenna gain, antenna efficiency and directive property etc., day
Line is often all only limitted to description antenna itself about the metric data of radiation characteristic.And the radiation characteristic of in general antenna is past
Toward be all in anechoic chamber, cooperate Network Analyzer (network analyzer) measure related data, and be using analysis net
A fiducial value for data measured by network analyzer (compared to reference standard antenna).Based on measure environment difference, antenna
The relative value and confidence level of metric data are all different.Also, conventionally used Network Analyzer is only capable of obtaining analogue data ginseng
Number (such as antenna efficiency, directive property, gain) enters the measurement in system combination stage when antenna module is applied to product again.
Previous metric data is generally only referred to for initial stage, and may not can guarantee above can there is no problem in system application.
When antenna is applied to wireless product, such as terminal installation, the either volume production test of the final test of product are usual
Signaling (signaling) test can be divided into and test two kinds with non-signaling (non-signaling), whether which kind of test is all
Need product itself to receive or send wireless signal, by just can determine that after the test that is operated to product complete machine antenna have performance it
Originally the efficiency being expected generally requires later to modify Antenna Design or traces internal circuitry or soft if test does not pass through
The algorithm of part, firmware, the research and development end of antenna module and system combination test aspect, need efficiently integration research and development money
Source, to reduce product development cost.Furthermore antenna used in current and following important multiple-input and multiple-output (MIMO) system
Component is more, and the research and development complexity of antenna module performance and system combination also increasingly increases.
Summary of the invention
The embodiment of the present invention discloses a kind of multi-input/output antenna handling capacity measurement system, electric wave that can be controllable in environment
In darkroom (anechoic chamber), air transmission (Over The Air, OTA) is carried out to multi-input multi-output antenna system
Handling capacity (throughput) measure, instead of traditionally for antenna module characteristic be used only Network Analyzer (network
Analyzer mode) is measured.
The embodiment of the present invention discloses a kind of multi-input/output antenna handling capacity measurement system, including anechoic chamber, at least
Two transmitting antennas, at least two antennas to be measured, Vector Signal Generator (Vector SignalGenerator, VSG), channel
Emulator, vector signal analyzer (Vector Signal Analyzer, VSA) and software-defined radio (Software
Defined Radio, SDR) module.At least two transmitting antenna is distinctly located at the different location in anechoic chamber,.It is described
At least two antennas to be measured are located at the terminal installation module in anechoic chamber, at least two transmitting antennas unit and it is described extremely
Few two antennas to be measured constitute multi-input multi-output system.Vector Signal Generator is passed by channel simulator connection at least two
At least two vector signals for being respectively corresponding at least two transmitting antennas are provided at least two transmission days by antennas respectively
Line, wherein channel simulator change according to channel model be sent to described at least two of at least two transmitting antenna to
Measure signal.Vector signal analyzer connects at least two antennas to be measured, receives and analyzes from described at least two to observation
The signal of line.Software-defined radio module link vector signal generator and vector signal analyzer, dominant vector signal produce
At least two vector signal caused by raw device, and according to vector signal analyzer analysis from described at least two to
The result of the signal of observation line is to obtain the handling capacity of multi-input multi-output system
Preferably, at least two vector signals that the Vector Signal Generator generates are non-signaling.
Preferably, the software-defined radio module connects and control channel emulator is to change channel model.
Preferably, the number of at least two transmitting antenna is M, and the number of at least two antenna to be measured is N
A, to constitute MxN multi-input multi-output system, M and N are all no less than 2 positive integer.
Preferably, M=4, the N=4, to constitute 4x4 multi-input multi-output system.
Preferably, M=8, the N=8, to constitute 8x8 multi-input multi-output system.
Preferably, the terminal installation module is the machine of laptop, laptop computer, tablet computer or mobile phone
Module.
Preferably, described at least two antennas to be measured are at least two antenna fields for being respectively arranged at terminal installation module
Domain.
Preferably, the terminal installation module is installed in the turntable in anechoic chamber,.
Preferably, at least two vector signal is I/Q signal.
In conclusion the embodiment of the present invention provides a kind of multi-input/output antenna handling capacity measurement system, how defeated obtain
Entering antenna in multiple output system can be mentioned with goodput achieved by air transmission with the antenna assessed in application system
The real channel capacity (Channel Capacity) of confession.Before the not yet complete design of the product applied by antenna, so that it may
Have more specifically and more rapidly to the efficiency that the antenna module in multi-input multi-output system can play in radio communication channel
Evaluation and test.
Detailed description of the invention
Fig. 1 is the schematic diagram of multi-input/output antenna handling capacity measurement system provided in an embodiment of the present invention.
Fig. 2 be another embodiment of the present invention provides multi-input/output antenna handling capacity measurement system schematic diagram.
Fig. 3 is the handling capacity that the multi-input/output antenna handling capacity measurement system of the embodiment of the present invention measures
Curve graph.
Specific embodiment
The multi-input/output antenna handling capacity measurement system of the embodiment of the present invention, including anechoic chamber, at least two biographies
Antennas, at least two antennas to be measured, Vector Signal Generator (VSG), channel simulator, vector signal analyzer (VSA) with
And software-defined radio (SDR) module.The number of at least two transmitting antenna is, for example, M, described at least two to
The number of observation line is e.g. N number of, and to constitute MxN multi-input multi-output system, M and N are all no less than 2 positive integer.With
Under Fig. 1 embodiment in, transmitting antenna and antenna to be measured are all respectively two (M=2 and N=2), how defeated to constitute 2x2 multi input
System out.In Fig. 2 embodiment, transmitting antenna and antenna to be measured are all respectively four (M=4 and N=4), to constitute 4x4 multi input
Multiple output system.
Fig. 1 is please referred to, Fig. 1 is the signal of multi-input/output antenna handling capacity measurement system provided in an embodiment of the present invention
Figure.The multi-input/output antenna handling capacity measurement system of Fig. 1 includes 11, two transmitting antenna 12a, 12b of anechoic chamber, two
Antenna 13a, 13b, Vector Signal Generator 16, channel simulator 15, vector signal analyzer 17 and software definition to be measured without
Line electricity module 18.Two transmitting antennas 12a, 12b are distinctly located at the different location in anechoic chamber, 11.Two antenna 13a to be measured,
13b is located at the terminal installation module 14 in anechoic chamber, 11, two transmitting antenna unit 12a, 12b and two antenna 13a to be measured,
13b constitutes 2x2 multi-input multi-output system.Vector Signal Generator 16 connects two transmitting antennas by channel simulator 15
12a,12b.Vector signal analyzer 17 connects two antenna 13a, 13b to be measured.18 link vector of software-defined radio module
Signal generator 16 and vector signal analyzer 17.
Two transmitting antennas 12a, 12b are located at the different location in anechoic chamber, 11, each transmitting antenna 12a, 12b
Signal transmitting position can be fixed, be also possible to it is variable, the main framework according to anechoic chamber, 11 and determine.In Fig. 1
Transmitting antenna 12a, 12b of drafting is only to help to illustrate, the present invention does not limit transmitting antenna 12a, 12b in anechoic chamber,
Position in 11.In addition, the wiring of transmitting antenna 12a, 12b and channel simulator 15 usually uses transmission line, such as coaxially
Transmission line.
Vector Signal Generator 16 provides two vector signals for being respectively corresponding to two transmitting antennas 12a, 12b respectively
To two transmitting antennas 12a, 12b.Described two vector signals are, for example, I/Q signal, but the present invention does not limit vector signal
Content.Each vector signal corresponds to a transmitting antenna, when the quantity of transmitting antenna increases, corresponds to vector signal
Increase therewith.Also, preferably, the vector signal that Vector Signal Generator 15 generates is non-signaling (non-signaling), phase
Testing process can be simplified compared with signaling (signaling) signal and shorten the testing time.Described two vector signals are being supplied to
Signal(-) carrier frequency when transmitting antenna 12a, 12b is, for example, less than 6GHz.
The terminal installation module 14 that antenna 13a, 13b to be measured are located at, e.g. laptop, laptop computer,
The body module of tablet computer or mobile phone, but the present invention does not limit the type of terminal installation, the appearance kenel of terminal installation
It can develop in response to technology with function and have more or less change.So-called body module is prototype of the terminal installation as product
Machine either only organic component but not yet include whole parts semi-finished product.Terminal installation module in anechoic chamber, 11
Two transmitting antennas are preferably two antenna area (not shown)s for being set to terminal installation module, each antenna field
One of them antenna (13a or 13b) to be measured is distinctly arranged in domain.Terminal installation module 14 is in order to improve multi-input/output antenna
Efficiency, not only antenna itself needs to design, and also there is considerable influence in the region (or position) where each antenna to efficiency.
Even if identical antenna module structure is installed in the different antennae region of the same terminal installation (module), by measuring gained
To handling capacity may also have it is significantly different.When terminal installation module antenna to be measured quantity the more, then terminal installation mould
The antenna area of block may be more than two.Such as: there are three (N=3) for antenna to be measured, and there are three antenna area possibility；It is to be measured
Antenna has eight (N=8), and antenna area may have eight, but therefore the present invention does not limit.
Terminal installation 14 can be installed in the turntable 19 in anechoic chamber, 11, allow antenna 13a, 13b to be measured relative to transmission day
The variable-angle of line 12a, 12b can obtain the throughput data of different direction.But the present invention, which does not limit, has antenna to be measured
The terminal installation 14 of 13a, 13b must be provided with allowing antenna 13a, 13b to be measured relative to transmitting antenna 12a, 12b in turntable 19
Variable-angle, can also for example allow transmitting antenna 12a, 12b with terminal installation module 14 is that the center of circle is done and rotated, and can equally be reached
To identical purpose.
Channel simulator 15 changes two vectors for being sent to described two transmitting antennas 12a, 12b according to channel model
Signal.Because ideal anechoic chamber, 11 is not reflection electromagnetic wave signal, in order to emulate practical application in various places, space
Multi-input/multi-output system efficiency changes (or replacement) channel model, can it is controllable in environment (in anechoic chamber, areflexia and
No outside noise interference) in the case where, obtain the throughput data for corresponding to various practical situations.Therefore the present invention is not
The type of channel model used in limiting, channel model can be the channel that the Institute of Electrical and Electronics Engineers (IEEE) (IEEE) is announced
Model is also possible to the channel model that academia's theory estimates, and is also possible to foundation measurement in practical field domain and obtains practical lead to
Road environmental parameter and the channel model made.In addition, the present invention does not limit channel simulator 15 and Vector Signal Generator 16
Circuit type, vector signal (e.g. fundamental frequency signal) and the two institute later before being converted to radiofrequency signal are connected between the two
Needing circuit to be used is in response to signal frequency and difference, and being directed to the equivalent of system combination is altered or varied, and still possesses
The essence of vector signal can be unrelated with used circuit type.
Vector signal analyzer 17 receives and analyzes the signal from described two antenna 13a, 13b to be measured.Vector letter
Coaxial line generally can be used in the wiring of number analyzer 17 and antenna 13a, 13b to be measured, but is also not necessarily limited to this.Software-defined radio
Two vector signals caused by 18 dominant vector signal generator 16 of module, and come from according to the analysis of vector signal analyzer 17
The handling capacity of multi-input multi-output system is obtained in the result of the signal of two antenna 13a, 13b to be measured.Software definition is wireless
Electric module 18 for example can framework in computer systems, and link vector signal generator 16 and vector signal analyzer 17, with
Constitute measurement platform 10, but the present invention therefore limit software-defined radio module 18, Vector Signal Generator 16 with to
Measure the connection and system combination mode between 17 three of signal analyzer.Channel simulator 15 can be one and put down independently of measurement
Module except platform 10 can also be integrated among measurement platform 10.
Then, referring to figure 2., Fig. 2 be another embodiment of the present invention provides multi-input/output antenna handle up amount measurement
The schematic diagram of system.The multi-input/output antenna handling capacity measurement system of Fig. 2 includes 21, four transmitting antennas of anechoic chamber,
22a, 22b, 22c, 22d, four antenna 23a, 23b to be measured, 23c, 23d, Vector Signal Generator 26, channel simulator 25, to
Measure signal analyzer 27 and software-defined radio module 28.Four transmitting antennas 22a, 22b, 22c, 22d are distinctly located at electricity
Different location in wave darkroom 21.Four antenna 23a, 23b, 23c, 23d to be measured are located at the terminal installation mould in anechoic chamber, 21
How defeated block 24, four transmitting antenna unit 22a, 22b, 22c, 22d and four antenna 23a, 23b, 23c, 23d composition 4x4 to be measured are
Enter multiple output system.Vector Signal Generator 26 connects four transmitting antennas 22a, 22b, 22c, 22d by channel simulator 25.
Vector signal analyzer 27 connects four antenna 23a, 23b, 23c, 23d to be measured.28 link vector of software-defined radio module
Signal generator 26 and vector signal analyzer 27.Terminal installation module 24 is arranged in turntable 29.
Four transmitting antenna 22a, 22b, 22c, 22d, four antenna 23a, 23b to be measured, 23c, 23d, vector signal generate
Device 26, channel simulator 25, the embodiment of vector signal analyzer 27 and software-defined radio module 28 are referred to
The explanation of previous embodiment, repeats no more.Fig. 2 embodiment and Fig. 1 embodiment another main difference is that, software definition is wireless
The electric connection of module 28 and controllable channel simulator 25, to change channel model used in channel simulator 25.Also, software
Defined radio module 28 not only can be integrated into measurement platform 20 with Vector Signal Generator 16 and vector signal analyzer 17,
Channel simulator 25 can also be changed to be incorporated among measurement platform 20 from independent module.Furthermore it in another embodiment, is based on
The explanation of Fig. 1 embodiment and Fig. 2 embodiment can derive to 8x8 multi-input multi-output system, even more input ports and output
The multi-input multi-output system at port.
Again referring to figure 3., Fig. 3 is throughput data example measured by Fig. 2 embodiment.Level 360 is done by turntable 29
(X-Y plane) rotation is spent, can measure numerical quantity of handling up (Mbps) is change with angle and more or less.Such spirogram of handling up
Multi-input/output antenna is designed relative to data such as antenna radiation pattern figure traditionally, antenna efficiency, sensitivity and
Speech is that have more specific measures of effectiveness function.Because the channel capacity of multi-input multi-output system theoretically is usually hardly possible
With what is reached, and pass through throughput data achieved by the antenna actually measured, then can reflect the letter of true application environment
Road capacity.
In conclusion how defeated multi-input/output antenna handling capacity measurement system provided by the embodiment of the present invention, obtain
Entering antenna in multiple output system can be mentioned with goodput achieved by air transmission with the antenna assessed in application system
The real channel capacity of confession.Before the not yet complete design of the product applied by antenna, so that it may to multi-input multi-output system
In the efficiency that can be played in radio communication channel of antenna module have more specific and faster evaluation and test.
The above description is only an embodiment of the present invention, not to limit to the scope of the patents of the invention.
Appended drawing reference
11,21: anechoic chamber,
12a, 12b, 22a, 22b, 22c, 22d: transmitting antenna
13a, 13b, 23a, 23b, 23c, 23d: antenna to be measured
14,24: terminal installation module
15,25: channel simulator
16,26: Vector Signal Generator
17,27: vector signal analyzer
18,28: software-defined radio module
10,20: measurement platform
19,29: turntable
X, Y, Z: axis
Claims (10)
1. a kind of multi-input/output antenna handling capacity measurement system, comprising:
One anechoic chamber,；
At least two transmitting antennas, the different location being distinctly located in the anechoic chamber,；
At least two antennas to be measured, the terminal installation module in the anechoic chamber, at least two transmitting antenna with should
At least two antennas to be measured constitute a multi-input multi-output system；
One channel simulator；
One Vector Signal Generator connects at least two transmitting antenna by the channel simulator, will be respectively corresponding to this extremely
At least two vector signals of few two transmitting antennas are provided at least two transmitting antenna respectively, wherein the channel simulator
According to a channel model to change at least two vector signal for being sent at least two transmitting antenna；
One vector signal analyzer connects at least two antenna to be measured, receives and analyzes from this at least two to observation
The signal of line；And
One software-defined radio module, connects the Vector Signal Generator and the vector signal analyzer, controls vector letter
At least two vector signal caused by number generator, and according to vector signal analyzer analysis from this at least two
The result of the signal of antenna to be measured is to obtain the handling capacity of the multi-input multi-output system.
2. multi-input/output antenna handling capacity measurement system as described in claim 1, which is characterized in that the vector signal produces
At least two vector signal that raw device generates is non-signaling.
3. multi-input/output antenna handling capacity measurement system as described in claim 1, which is characterized in that the software definition without
Line electricity module connects and controls the channel simulator to change the channel model.
4. multi-input/output antenna handling capacity measurement system as described in claim 1, which is characterized in that at least two biography
The number of antennas is M, the number of at least two antenna to be measured be it is N number of, to constitute MxN multi-input multi-output system, M and
N is all no less than 2 positive integer.
5. multi-input/output antenna handling capacity measurement system as claimed in claim 4, which is characterized in that M=4, N=4, with
Constitute 4x4 multi-input multi-output system.
6. multi-input/output antenna handling capacity measurement system as claimed in claim 4, which is characterized in that M=8, N=8, with
Constitute 8x8 multi-input multi-output system.
7. multi-input/output antenna handling capacity measurement system as described in claim 1, which is characterized in that the terminal installation mould
Block is the body module of laptop, laptop computer, tablet computer or mobile phone.
8. multi-input/output antenna handling capacity measurement system as claimed in claim 7, which is characterized in that this at least two to
Observation line is at least two antenna areas for being respectively arranged at the terminal installation module.
9. multi-input/output antenna handling capacity measurement system as described in claim 1, which is characterized in that the terminal installation mould
A packaged turntable in the anechoic chamber,.
10. multi-input/output antenna handling capacity measurement system as described in claim 1, which is characterized in that this at least two
Vector signal is I/Q signal.
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| CN108988960B (en) | 2021-06-29 |
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