CN207283563U - Bluetooth equipment radio frequency test system - Google Patents
Bluetooth equipment radio frequency test system Download PDFInfo
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- CN207283563U CN207283563U CN201721080539.8U CN201721080539U CN207283563U CN 207283563 U CN207283563 U CN 207283563U CN 201721080539 U CN201721080539 U CN 201721080539U CN 207283563 U CN207283563 U CN 207283563U
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Abstract
The utility model provides a kind of bluetooth equipment radio frequency test system, which includes：Bluetooth comprehensive test instrument, spectrum analyzer, vector signal generator, analog signal generator and RF switch case；Wherein, RF switch case, for providing a plurality of radio frequency testing path, control：The transmitter and receiver of bluetooth comprehensive test instrument device under test carries out the test of radio-frequency performance project；Or bluetooth comprehensive test instrument coordinates the transmitter progress frequency domain for carrying out spectrum analyzer device under test or the test of time domain project with spectrum analyzer；Or bluetooth comprehensive test instrument coordinates the test for carrying out the anti-interference C/I projects of receiver with vector signal generator；Or bluetooth comprehensive test instrument coordinates the anti-interference obstruction project testing for carrying out receiver with analog signal generator；Or bluetooth comprehensive test instrument coordinates the test for carrying out receiver intermodulation project with vector signal generator, analog signal generator jointly.Above-mentioned technical proposal improves the work efficiency and accuracy of bluetooth equipment radio frequency testing, has saved cost of labor.
Description
Technical field
Bluetooth equipment technical field of measurement and test is the utility model is related to, more particularly to a kind of bluetooth equipment radio frequency test system.
Background technology
Bluetooth technology is a kind of open wireless communication standard at tip, it uses the ISM band of 2.4-2.485GHz
UHF radio waves, the short-range data realized between various electronic equipments exchange.Bluetooth technology is by bluetooth sig
(Bluetooth Special Interest Group, abbreviation SIG) is managed, which is exceeded by global every field
24000 companies form.The top priority of SIG is responsible for the exploitation of bluetooth specification, including radio frequency, Profile, agreement etc.
Deng, administrative authentication project, and safeguard the rights and interests of Bluetooth brand.The product of manufacturers in outer packing if one want to use indigo plant
The Logo of tooth states the product support Bluetooth technology of oneself, then must pass through the authentication test of bluetooth sig.
In the actual production of measured piece product, most of manufacturers all can directly buy and have been obtained for SIG certifications
The Bluetooth chip or bluetooth module crossed are integrated into the measured piece product of oneself, such as mobile phone, laptop, walkman.
But since the type of measured piece product is different, inevitably various modifications are carried out to original chip during integrated, such as
Replace antenna, replace power supply etc., these modifications all inevitably cause the Bluetooth RF performance of measured piece product to become
Change, therefore, before measured piece launch, its radio-frequency performance is strictly tested, to ensure that its wireless index meets indigo plant
The requirement of tooth Radio Specification is just particularly important.
At present, Bluetooth RF test system be mostly with the single instrument of many blocks of major test instrumentation producer erect come
Radio frequency test system, or need according to different test requests to build different test environments temporarily, and need
Tester is operated manually and configures to test instrumentation.The former adds the cost of test, latter increases the testing time
And the unstability of test.Not only work efficiency is low for the two, and the uniformity of test result also is difficult to ensure, indivedual test items
Mesh is even more to be difficult to require to complete according to test specification, therefore, develops a set of complete Bluetooth RF automatic test system as early as possible
System, improves the accuracy of work efficiency and test result, saves cost of labor, just seems particularly necessary.
Utility model content
The utility model embodiment provides a kind of bluetooth equipment radio frequency test system, is surveyed to improve bluetooth equipment radio frequency
The work efficiency and accuracy of examination, save cost of labor, which includes：Bluetooth comprehensive test instrument, spectrum analyzer, vector signal hair
Raw device, analog signal generator and RF switch case；Wherein,
Bluetooth comprehensive test instrument, it is and to be measured for sending downlink signal to Devices to test and receiving the uplink signal of Devices to test
Equipment establishes loopback connection, and the transmitter and receiver of device under test carries out the test of radio-frequency performance project；
Spectrum analyzer, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, receiving the upper of Devices to test
Row signal, the transmitter of device under test carry out the test of frequency domain or time domain project；
Vector signal generator, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, producing vector disturbance
Signal sends the survey for coordinating the receiver of bluetooth comprehensive test instrument device under test to carry out the anti-interference C/I projects of radio frequency to Devices to test
Examination；Or produce vector disturbance signal and send to Devices to test, the mono-tone interference signal produced with analog signal generator is matched somebody with somebody jointly
The receiver for closing bluetooth comprehensive test instrument device under test carries out the test of intermodulation project；
Analog signal generator, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, producing mono-tone interference
Signal sends the survey for coordinating the receiver of bluetooth comprehensive test instrument device under test to carry out the anti-interference obstruction project of radio frequency to Devices to test
Examination；Or produce mono-tone interference signal and send to Devices to test, the vector disturbance signal produced with vector signal generator is matched somebody with somebody jointly
The receiver for closing bluetooth comprehensive test instrument device under test carries out the test of intermodulation project；
RF switch case, with the bluetooth comprehensive test instrument, spectrum analyzer, vector signal generator, analog signal generator
And Devices to test connection, for according to the default radio frequency testing project for treating test equipment progress, presetting test signal power
And frequency requirement, there is provided a plurality of radio frequency testing path, control：The transmitter and receiver of bluetooth comprehensive test instrument device under test carries out
The test of radio-frequency performance project；Or bluetooth comprehensive test instrument coordinates the transmitting for completing spectrum analyzer device under test with spectrum analyzer
The frequency domain of machine or the test of time domain project；Or bluetooth comprehensive test instrument coordinates with vector signal generator, is treated by bluetooth comprehensive test instrument
The receiver of measurement equipment carries out the test of the anti-interference C/I projects of radio frequency；Or bluetooth comprehensive test instrument coordinates with analog signal generator, leads to
The receiver for crossing bluetooth comprehensive test instrument device under test carries out the test of the anti-interference obstruction project of radio frequency；Or bluetooth comprehensive test instrument and vector
Signal generator, analog signal generator coordinate jointly, and intermodulation item is carried out by the receiver of bluetooth comprehensive test instrument device under test
Purpose is tested.
The radio frequency test system come is erected from the single instrument of many blocks in the prior art or is wanted according to different tests
The different test environments for asking to build temporarily compare, and the technical solution that the utility model embodiment provides can be opened by radio frequency
Case is closed according to the default radio frequency testing project for treating test equipment progress, presets test signal power and frequency requirement, there is provided more
Bar radio frequency testing path, control：Bluetooth comprehensive test instrument itself completes the test of device under test transmitter and receiver project；It is or blue
Tooth comprehensive test instrument coordinates the frequency domain of transmitter or the survey of time domain project for completing spectrum analyzer device under test with spectrum analyzer
Examination；Or bluetooth comprehensive test instrument coordinates with vector signal generator, radio frequency is carried out by the receiver of bluetooth comprehensive test instrument device under test
The test of anti-interference project；Or bluetooth comprehensive test instrument coordinates with analog signal generator, passes through bluetooth comprehensive test instrument device under test
Receiver carries out the test of the anti-interference project obstruction project of radio frequency；Or bluetooth comprehensive test instrument and vector signal generator, analog signal
Generator coordinates jointly, and the test of intermodulation project, therefore, the program are carried out by the receiver of bluetooth comprehensive test instrument device under test
Instrument is operated manually and configured without tester, builds, improves work efficiency, at the same time without many block instrument
Also cost of labor is saved, in addition, test environment is not built temporarily, also improves the accuracy of test result.
Brief description of the drawings
Attached drawing described herein is used to provide a further understanding of the present invention, and forms the part of the application,
The restriction to the utility model is not formed.In the accompanying drawings：
Fig. 1 is the structure diagram of bluetooth equipment radio frequency test system in the utility model embodiment；
Fig. 2 is the electrical block diagram of RF switch case in the utility model embodiment；
Fig. 3 is the structure diagram in the first radio frequency testing path in the utility model embodiment；
Fig. 4 is the structure diagram in the second radio frequency testing path in the utility model embodiment；
Fig. 5 is the structure diagram in the 3rd radio frequency testing path in the utility model embodiment；
Fig. 6 is the structure diagram in the 4th radio frequency testing path in the utility model embodiment.
Fig. 7 is the structure diagram in the 5th radio frequency testing path in the utility model embodiment.
Embodiment
For the purpose of this utility model, technical solution and advantage is more clearly understood, with reference to embodiment and attached
Figure, is described in further details the utility model.Here, the exemplary embodiment and its explanation of the utility model are used to solve
The utility model is released, but is not intended to limit the scope of the present invention.
Bluetooth equipment radio frequency test system is sent out by bluetooth comprehensive test instrument, spectrum analyzer, vector signal generator, analog signal
Raw device, RF switch, industrial control computer composition, automation is realized to the test event defined in Bluetooth RF test specification
Test.Test process data (test log) are preserved, after completing test, test result can be saved as to format data, side
Just check and deliver by inspection producer.Compared with the test system of Bluetooth RF in the prior art, the test method of innovation is employed,
The requirement for instrument arrangement is reduced, has the advantages that to reduce cost, increase efficiency.System is tested to the bluetooth equipment below
Describe in detail.
Fig. 1 is the structure diagram of bluetooth equipment radio frequency test system in the utility model embodiment, as shown in Figure 1, should
Bluetooth equipment radio frequency test system includes：Bluetooth comprehensive test instrument 100, spectrum analyzer 200, vector signal generator 300, simulation
Signal generator 400 and RF switch case 500；Wherein,
Bluetooth comprehensive test instrument 100, for sending downlink signal to Devices to test and the uplink signal of reception Devices to test, with treating
Measurement equipment establishes loopback connection, and the transmitter and receiver of device under test carries out the test of portion radio frequency performance project；Specifically
During implementation, loopback is established with Devices to test by bluetooth comprehensive test instrument and is connected, measure the uplink signal or statistics error code of Devices to test
Rate or packet loss；When it is implemented, bluetooth comprehensive test instrument can complete the radio-frequency performance of the transmitter and receiver of device under test
The test of some projects, such as：Power Control, carrier frequency tolerance limit, carrier frequency shift, reference sensitivity, maximum input electricity
Flat test waits；
Spectrum analyzer 200, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, receiving Devices to test
Uplink signal, the transmitter of device under test carry out the test of frequency domain or time domain project；When it is implemented, by the upper of Devices to test
Row signal shunts to frequency spectrograph, measures each index in frequency domain or time domain；When it is implemented, can be with the transmitting of device under test
Machine carries out frequency domain or the test such as the maximum transmission power of time domain, power spectral density；
Vector signal generator 300, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, producing vector and doing
Disturbing signal and sending coordinates the receiver of bluetooth comprehensive test instrument device under test to carry out the anti-interference carrier interference ratio C/I of radio frequency to Devices to test
The test of project；Or produce vector disturbance signal and send to Devices to test, believe with the mono-tone interference that analog signal generator produces
Number common receiver for coordinating bluetooth comprehensive test instrument device under test carries out the test of intermodulation project；
Analog signal generator 400, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, producing single-frequency and doing
Disturbing signal and sending coordinates the receiver of bluetooth comprehensive test instrument device under test to carry out the anti-interference obstruction project of radio frequency to Devices to test
Test；Or produce mono-tone interference signal and send to Devices to test, the vector disturbance signal produced with vector signal generator is common
The receiver of bluetooth comprehensive test instrument device under test is coordinated to carry out the test of intermodulation project；
RF switch case 500, believes with bluetooth comprehensive test instrument 100, spectrum analyzer 200, vector signal generator 300, simulation
Number generator 400 and Devices to test 600 connect, for according to the default radio frequency testing project for treating the progress of test equipment 600,
Default test signal power and frequency requirement, there is provided a plurality of radio frequency testing path, control：Bluetooth comprehensive test instrument itself is completed to be measured
The transmitter and receiver of equipment carries out the test of radio-frequency performance project；Or bluetooth comprehensive test instrument coordinates completion frequency with spectrum analyzer
The frequency domain of the transmitter of spectrum analysis instrument device under test or the test of time domain project；Or bluetooth comprehensive test instrument and vector signal generator
Coordinate, the test of the anti-interference C/I projects of radio frequency is carried out by the receiver of bluetooth comprehensive test instrument device under test；Or bluetooth comprehensive test instrument
Coordinate with analog signal generator, the anti-interference obstruction project of radio frequency is carried out by the receiver of bluetooth comprehensive test instrument device under test
Test；Or bluetooth comprehensive test instrument coordinates jointly with vector signal generator, analog signal generator, by bluetooth comprehensive test instrument to be measured
The receiver of equipment carries out the test of intermodulation project.
When it is implemented, bluetooth comprehensive test instrument is used to establish communication connection between user and Devices to test, radio-frequency performance is carried out
Test.Bluetooth comprehensive test instrument can also produce vector disturbance signal, mono-tone interference signal with complete independently partial test project.
Spectrum analyzer is mainly used to carry out the test of frequency domain or time domain, be mainly used in this system the test of transmitter relevant item with
And radio-frequency line is calibrated.Vector signal generator is used to produce vector disturbance signal, is mainly used for connecing in the present system
The test of receipts machine anti-interference C/I, intermodulation relevant item.Analog signal generator is used to produce mono-tone interference signal, in the system
In be mainly used for receiver it is anti-interference obstruction, the test of intermodulation project.
When it is implemented, the radio frequency testing mentioned of the utility model embodiment mainly include the test of existing radio-frequency performance and
Radio frequency interference test.Radio-frequency performance test mainly includes the performance test of the transmitter and receiver of Devices to test, transmitter
Technical indicator include phase error and frequency error, output power of transmitter, burst timing and burst power/when
Between envelope etc., the technical indicator of receiver is reference sensitivity.Radio frequency interference test mainly includes anti-interference C/I, mutual phase modulation
Pass project etc. is tested.
In one embodiment, above-mentioned bluetooth equipment radio frequency test system further includes：Industrial control computer 700, with indigo plant
Tooth comprehensive test instrument 100, spectrum analyzer 200, vector signal generator 300, analog signal generator 400 and RF switch case 500
Connection, for by controlling bluetooth comprehensive test instrument, spectrum analyzer, vector signal generator, analog signal generator and radio frequency to open
Case work is closed, completes the radio-frequency performance test of the transmitter and receiver of device under test, intelligent, automation.
When it is implemented, one piece of GPIB (General- is installed in the industrial personal computer (industrial control computer 700)
Purpose Interface Bus, general purpose interface bus) control card and measured piece ATS software, and pass through GPIB
Or other control cables and each instrument (bluetooth comprehensive test instrument 100, spectrum analyzer 200, the vector signal generator in system
300th, analog signal generator 400 and RF switch case 500) it is connected.When testing system software is run, gpib bus can be passed through
Or other control cables are controlled the instrument in the system, specifically how to control as detailed below.
Comprising passive devices such as circulator, combiner, isolator, wave filters inside RF switch case, RF switch and penetrate
The components such as frequency connecting cable are the test link control units of a whole set of radio frequency test system.RF switch case realizes that upload control is believed
Separation number with downgoing control signal, carries out effectively measured piece (Devices to test) and targetedly tests.Below to the radio frequency
The effect of device inside switch-box is introduced.
Circulator：Effect is that the signal in link is carried out uplink and downlink separation, and every test is effectively performed.
Combiner：Effect is to be combined useful signal and interference signal, ensures the test of distracter purpose.
Isolator：Effect is the signal one direction transmission for ensureing to pass through, and avoids inversely burning instrument.
Wave filter：Signal is filtered into the selection in line frequency, ensures the test accuracy of relevant item.
RF switch：For choosing the respective link in radio frequency case.
As shown in Fig. 2, the interface of RF switch case：First test port 503 is used to be connected to bluetooth comprehensive test instrument 100；The
Four test ports 522 are used for the output port for being connected to vector signal generator 300, are used to launch interference letter in radio frequency testing
Number；3rd test port 511 is used for the output port for being connected to analog signal generator 400, is used to launch in radio frequency testing
Interference signal；Second test port 509 is used for the input port for being connected to spectrum analyzer, the measurement for signal.
When it is implemented, each test instrumentation (bluetooth comprehensive test instrument in Devices to test and bluetooth equipment radio frequency test system
100th, spectrum analyzer 200, vector signal generator 300, analog signal generator 400) between connected by RF switch case
And communication.Its work cardinal principle is：The downlink useful signal of bluetooth comprehensive test instrument output, the vector of vector signal generator output
Interference signal and the mono-tone interference signal of analog signal generator output enter RF switch case, by being matched somebody with somebody in RF switch case
The receiving port of Devices to test is input to after the radio-frequency path put；The uplink signal of Devices to test transmitting likewise enters RF switch
Case, by uplink, finally enters the port of bluetooth comprehensive test instrument or measures its RF index to the port of frequency spectrograph.Bluetooth
Comprehensive test instrument, RF switch case and Devices to test, formed a complete communication loop, RF switch case be accomplished that uplink/under
The transmitting path of row signal.Industrial control computer is controlled the instrument in the system by gpib bus or cable, complete
Into radio frequency testing.Describe in detail below to the concrete structure of the RF switch case, and test process.
Fig. 2 shows the structure diagram of RF switch case in the utility model embodiment.By controlling RF switch case
Change separation and test request that corresponding path makes signal realize uplink/downlink signal by corresponding passive device.Bluetooth is penetrated
Frequency test includes transmitter test and receiver test.For different test events, by adjusting penetrating in RF switch case
Frequency switchs, and realizes the radio-frequency path switching in RF switch case, completes radio frequency testing.
In one embodiment, RF switch case 500 includes：First radio frequency testing path, by the bluetooth comprehensive test instrument with
Devices to test connects, for connecing requiring Devices to test antenna opening to receive when downlink signal intensity is higher than preset signal strength
Logical, the transmitter and receiver of device under test carries out radio-frequency performance test.
In one embodiment, as shown in figure 3, the first radio frequency testing path includes：
First switch K9, the first switch K9 include：First movable contact 1, the first stationary contact 11,12 and of the second stationary contact
3rd stationary contact 13；First movable contact 1 is connected with the prevention at radio-frequency port of Devices to test 600；
Second switch K6, the second switch include：Second movable contact 2, the first normally-closed contact NC1 and the first normally opened contact
NO1；The first normally-closed contact NC1 is connected with the first stationary contact 11 of the first switch；
First test port 503, the first port of the first test port 503 are connected with second movable contact 2, and first surveys
The second port of examination port 503 is connected with the bluetooth comprehensive test instrument 100；
The industrial control computer is specifically used in default radio frequency testing project to requiring Devices to test antenna opening to receive
When being higher than preset signal strength to downlink signal intensity, first movable contact 1 is controlled to be connected with first stationary contact 11,
Second movable contact 2 and the first normally-closed contact NC1 are connected, and the transmitter and receiver of device under test carries out radio-frequency performance test.
When it is implemented, Fig. 3 be by bluetooth comprehensive test instrument itself to complete transmitter and receiver test event when this reality
With the connection block diagram of the RF switch case of new embodiment.The downlink signal of bluetooth comprehensive test instrument is directly connected to by radio-frequency cable
The prevention at radio-frequency port of Devices to test；The prevention at radio-frequency port of Devices to test is directly connected to the input terminal of bluetooth comprehensive test instrument by radio-frequency cable
Mouthful, complete circuit is formed, to realize the test event of bluetooth comprehensive test instrument device under test.
In one embodiment, RF switch case 500 further includes：Second radio frequency testing path, by the bluetooth comprehensive test instrument,
Spectrum analyzer is connected with Devices to test, in default radio frequency testing project to requiring Devices to test antenna opening to receive downlink
Signal strength is connected when being less than preset signal strength, and the transmitter of device under test carries out the test of frequency domain or time domain project.
In one embodiment, as shown in figure 4, the second radio frequency testing path includes：
First annular device 504, the first annular device 504 include three ports, its first port is with second switch K6's
First normally opened contact NO1 connections, the uplink signal that downlink signal and Devices to test for bluetooth comprehensive test instrument to be sent are sent point
From；
First isolator 505, first isolator 505 include two ports, its first port and first annular device
504 second port connection, for the uplink signal one direction transmission for ensureing to pass through；
Power splitter 506, the power splitter 506 include three ports, its first port and the second end of the first isolator 505
Mouth connection, for uplink signal to be shunted to bluetooth comprehensive test instrument and spectrum analyzer, carries out transmitter frequency on spectrum analyzer
Domain or the test of time domain project；
Second circulator 518, the second circulator 518 include three ports, first port and the work(point of the second circulator 518
The second port connection of device 506, the uplink signal that downlink signal and Devices to test for bluetooth comprehensive test instrument to be sent are sent point
From；
3rd switch K2, including：3rd movable contact 3, the second normally-closed contact NC2 and the second normally opened contact NO2；Described 3rd
Movable contact 3 is connected with the second port of second circulator, and the of the second normally-closed contact NC2 and the first switch K9
Two stationary contacts 12 connect；
Second test port 509, the first port of the second test port 509 are connected with the input terminal of spectrum analyzer 200；
Second isolator 510, second isolator 510 include two ports, first port and the second test port
509 second end connection, second port is connected with the 3rd port of power splitter 506, for ensureing what is sent from equipment to be tested
Uplink signal one direction is transmitted；
4th isolator 521, the 4th isolator include two ports, and the of first port and first annular device 504
Three ports connect, for the downlink signal one direction transmission for ensureing to send from bluetooth comprehensive test instrument；
3rd isolator 520, the 3rd isolator include two ports, and the of first port and the 4th isolator 521
Two-port netwerk connects, for the downlink signal one direction transmission for ensureing to send from bluetooth comprehensive test instrument；
First combiner 529, first combiner include four ports, and the of first port and the 3rd isolator 520
Two-port netwerk connects, and for being combined in anti-interference test with interference signal, first combiner 529 is only in anti-interference project
In play practical function, interference signal one end and non-emissive in general test example, can play load effect；
9th isolator 526, the 9th isolator include two ports, and the of first port and the first combiner 529
Two-port netwerk connects, for the downlink signal one direction transmission for ensureing to send from bluetooth comprehensive test instrument；
Tenth isolator 527, the tenth isolator include two ports, and the of first port and the 9th isolator 526
Two-port netwerk connects, for the downlink signal one direction transmission for ensureing to send from bluetooth comprehensive test instrument；
Industrial control computer is specifically used in the case where default radio frequency testing project is to requiring Devices to test antenna opening to receive
When row signal strength is less than preset signal strength, the first movable contact 1 of control is connected with second stationary contact 12, the 3rd movable contact
3 and second normally-closed contact NC2 connect, the second movable contact 2 of second switch and the first normally opened contact NO1 connection, device under test
Transmitter carry out the test of frequency domain or time domain project.
When it is implemented, setting the effect of two the 9th isolators 526 of isolator and the tenth isolator 527 in succession is：Rise
To protective effect, an actual isolator is also possible, and two isolators series connection are not intended merely to preferably to protect impedance not
Infringement of the timing echo-signal to instrument.Repeatedly mentioned in the utility model embodiment：In succession set two isolators, effect with
9th isolator 526 and the tenth isolator 527 in succession setting effect it is consistent.
When it is implemented, Fig. 4 be by spectrum analyzer to complete transmitter test event when the utility model embodiment
RF switch case connection block diagram, as shown in figure 4, the downlink signal of bluetooth comprehensive test instrument passes through first annular device 504, the 4th is single
To device 521, the 3rd isolator 520, the first combiner 529, the 9th isolator 526, the tenth isolator 527, the second circulator 518
It is connected to the prevention at radio-frequency port of Devices to test.The prevention at radio-frequency port of Devices to test is by the second circulator 518, and power splitter 506, first is single
To device 505, the input port that first annular device 504 is connected to bluetooth comprehensive test instrument forms complete circuit, the radio frequency of Devices to test
Port frequency is realized by the second circulator 518, power splitter 506, the input port that the second isolator 510 is connected to spectrum analyzer
The transmitter frequency domain of spectrometer device under test or the project testing of time domain.
In one embodiment, RF switch case 500 further includes：3rd radio frequency testing path, by the bluetooth comprehensive test instrument,
Vector signal generator is connected with Devices to test, and the receiver for device under test carries out the survey of the anti-interference C/I projects of radio frequency
Examination.
In one embodiment, the 3rd radio frequency testing path includes：
4th test port 512, the first port of the 4th test port connect with the output terminal of the vector signal generator
Connect；
6th isolator 523, the second port of the first port of the 6th isolator 523 and the 4th test port 512
Connection, for the vector disturbance signal one direction transmission for ensureing to send from vector signal generator；
5th isolator 522, first port are connected with the second port of the 6th isolator 523, for ensureing to believe from vector
The vector disturbance signal one direction transmission that number generator is sent；
The second port of 5th isolator 522 is connected with the 3rd port of first combiner 529, the first combining
Device 529 is used to vector disturbance signal being combined with the downlink signal one direction sent from bluetooth comprehensive test instrument；
The industrial control computer is specifically used for controlling first movable contact to connect with second stationary contact, and second
First normally opened contact NO1 of movable contact and second switch is connected, and the 3rd movable contact and the second normally-closed contact of the 3rd switch are connected,
Device under test receiver carries out the test of the anti-interference C/I projects of radio frequency.
In one embodiment, RF switch case 500 further includes：4th radio frequency testing path, by the bluetooth comprehensive test instrument,
Vector signal generator, analog signal generator and Devices to test connect, and the receiver for device under test carries out intermodulation item
Purpose is tested.
In one embodiment, the 4th radio frequency testing path includes：
3rd test port 511, the first port of the 3rd test port 511 and the output terminal of the analog signal generator
Connection；
4th switch K3, including：4th movable contact 4, the 3rd normally-closed contact NC3 and the 3rd normally opened contact NO3；Described 4th
Movable contact 4 is connected with the second port of the 3rd test port 511；
8th isolator 525, the first port of the 8th isolator 525 and the 3rd normally-closed contact of the described 4th switch K3
NC3 connections, for the mono-tone interference signal one direction transmission for ensureing to send from analog signal generator；
7th isolator 524, the first port of the 7th isolator 524 are connected with the second port of the 8th isolator 525, are used
In the mono-tone interference signal one direction transmission for ensureing to send from analog signal generator；
The second port of 7th isolator 524 is connected with the 4th port of first combiner 529, the first combining
Device 529 is used to be closed mono-tone interference signal, vector disturbance signal with the downlink signal one direction sent from bluetooth comprehensive test instrument
Road；
The industrial control computer is specifically used for controlling first movable contact 1 to connect with second stationary contact 12,
First normally opened contact NO1 of the second movable contact 2 and second switch is connected, and the 3rd movable contact 3 and second of the 3rd switch is normally closed tactile
Point NC2 is connected, and the 4th movable contact 4 and the 3rd normally-closed contact NC3 of the 4th switch are connected, and the receiver of device under test carries out mutually
The test of tune project.
In one embodiment, RF switch case 500 further includes：5th radio frequency testing path, by the bluetooth comprehensive test instrument,
Analog signal generator is connected with Devices to test, and the receiver for device under test carries out the survey of the anti-interference obstruction project of radio frequency
Examination.
In one embodiment, the 5th radio frequency testing path includes：
Second combiner 517, second combiner 517 include three ports, wherein, the first of the second combiner 517
Port is connected with the 3rd stationary contact 13 of the first switch K9, for the mono-tone interference signal for sending analog signal generator
Downlink signal one direction with being sent from bluetooth comprehensive test instrument is combined；
Second attenuator 528, the first port of the second attenuator 528 are connected with the second port of the second combiner 517, the
The second port of two attenuators 528 is connected with the second normally opened contact NO2 of the described 3rd switch K2；
First attenuator 527 ', the first port of the first attenuator 527 ' are connected with the 3rd port of the second combiner 517,
For link impedance matching；
5th switch K4, including：5th movable contact 5, the 4th normally-closed contact NC4 and the 4th normally opened contact NO4；Described 5th
Movable contact 5 is connected with the second port of the first attenuator 527 '；
6th switch K5 includes：6th movable contact 6, the 5th normally-closed contact NC5 and the 5th normally opened contact NO5；5th is normally closed
Contact NC5 be connected with the 4th normally-closed contact NC4 of the 5th switch K4, and the 6th movable contact 6 switchs the of K3 with the described 4th
Three normally opened contact NO3 connections；
The industrial control computer is specifically used for the first movable contact 1 and the 3rd stationary contact for controlling the first switch K9
13 connect, and the second movable contact 2 of second switch K6 and the first normally opened contact NO1 are connected, the 3rd movable contact 3 of the 3rd switch K2
Connected with the second normally opened contact NO2, the 4th movable contact 4 and the 3rd normally opened contact NO3 of the 4th switch K3 are connected, the 5th switch K4
The 5th movable contact 5 and the 4th normally-closed contact NC4 connect, the 6th switch K5 the 6th movable contact 6 connect with the 5th normally-closed contact NC5
Logical, the 4th normally-closed contact NC4 and the 5th normally-closed contact NC5 are connected, and the receiver of device under test carries out the test of intermodulation project.
When it is implemented, port NO5 and NO4 are open port, the two ports at this stage and be not connected to any equipment or
Device, this is the access interface that subsequent upgrade is reserved.Above-mentioned link impedance matching is meant that：Reduce the standing-wave ratio in link,
If standing-wave ratio is big, the uncertainty of system will become larger, just inaccurate for test.
Obviously, those skilled in the art should be understood that each module of above-mentioned the utility model embodiment or each step
It can be realized with general computing device, they can be concentrated on single computing device, or are distributed in multiple calculating
On the network that device is formed, alternatively, they can be realized with the program code that computing device can perform, it is thus possible to
It is stored in storage device by computing device to perform, and in some cases, can be with suitable different from herein
Sequence performs shown or described step, they is either fabricated to each integrated circuit modules respectively or by them
Multiple modules or step are fabricated to single integrated circuit module to realize.In this way, the utility model embodiment be not restricted to it is any
Specific hardware and software combines.
The above descriptions are merely preferred embodiments of the present invention, is not intended to limit the present invention, for this
For the technical staff in field, the utility model embodiment can have various modifications and variations.All spirit in the utility model
Within principle, any modification, equivalent replacement, improvement and so on, should be included within the scope of protection of this utility model.
Claims (12)
- A kind of 1. bluetooth equipment radio frequency test system, it is characterised in that including：Bluetooth comprehensive test instrument, spectrum analyzer, vector signal Generator, analog signal generator and RF switch case；Wherein,Bluetooth comprehensive test instrument, for sending downlink signal to Devices to test and the uplink signal of reception Devices to test, with Devices to test Loopback connection is established, the transmitter and receiver of device under test carries out the test of radio-frequency performance project；Spectrum analyzer, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, receiving the uplink letter of Devices to test Number, the transmitter of device under test carries out the test of frequency domain or time domain project；Vector signal generator, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, producing vector disturbance signal Send the test for coordinating the receiver of bluetooth comprehensive test instrument device under test to carry out the anti-interference C/I projects of radio frequency to Devices to test；Or Produce vector disturbance signal to send to Devices to test, the mono-tone interference signal produced with analog signal generator coordinates bluetooth jointly The receiver of comprehensive test instrument device under test carries out the test of intermodulation project；Analog signal generator, for when bluetooth comprehensive test instrument and Devices to test are established and communicated to connect, producing mono-tone interference signal Send the test for coordinating the receiver of bluetooth comprehensive test instrument device under test to carry out the anti-interference obstruction project of radio frequency to Devices to test； Or produce mono-tone interference signal and send to Devices to test, the vector disturbance signal produced with vector signal generator coordinates indigo plant jointly The receiver of tooth comprehensive test instrument device under test carries out the test of intermodulation project；RF switch case, with the bluetooth comprehensive test instrument, spectrum analyzer, vector signal generator, analog signal generator and Devices to test connects, for according to the default radio frequency testing project for treating test equipment progress, presetting test signal power and frequency Rate requirement, there is provided a plurality of radio frequency testing path, control：The transmitter and receiver of bluetooth comprehensive test instrument device under test carries out radio frequency The test of performance project；Or bluetooth comprehensive test instrument and the transmitter of spectrum analyzer cooperation completion spectrum analyzer device under test The test of frequency domain or time domain project；Or bluetooth comprehensive test instrument coordinates with vector signal generator, is set by bluetooth comprehensive test instrument to be measured Standby receiver carries out the test of the anti-interference C/I projects of radio frequency；Or bluetooth comprehensive test instrument coordinates with analog signal generator, passes through indigo plant The receiver of tooth comprehensive test instrument device under test carries out the test of the anti-interference obstruction project of radio frequency；Or bluetooth comprehensive test instrument and vector signal Generator, analog signal generator coordinate jointly, and intermodulation project is carried out by the receiver of bluetooth comprehensive test instrument device under test Test.
- 2. bluetooth equipment radio frequency test system as claimed in claim 1, it is characterised in that further include：Industrial control computer, It is connected, uses with the bluetooth comprehensive test instrument, spectrum analyzer, vector signal generator, analog signal generator and RF switch case In by controlling bluetooth comprehensive test instrument, spectrum analyzer, vector signal generator, analog signal generator and RF switch case work Make, complete the radio-frequency performance test of the transmitter and receiver of device under test.
- 3. bluetooth equipment radio frequency test system as claimed in claim 2, it is characterised in that the RF switch case includes：The One radio frequency testing path, the bluetooth comprehensive test instrument is connected with Devices to test, for requiring Devices to test antenna opening to receive Downlink signal intensity is connected when being higher than preset signal strength, and the transmitter and receiver of device under test carries out radio-frequency performance survey Examination.
- 4. bluetooth equipment radio frequency test system as claimed in claim 3, it is characterised in that the first radio frequency testing path bag Include：First switch (K9), the first switch (K9) include：First movable contact (1), the first stationary contact (11), the second stationary contact (12) and the 3rd stationary contact (13)；First movable contact (1) is connected with the prevention at radio-frequency port of Devices to test (600)；Second switch (K6), the second switch (K6) include：Second movable contact (2), the first normally-closed contact (NC1) and first are normal Open contact (NO1)；First normally-closed contact (NC1) is connected with the first stationary contact (11) of the first switch (K9)；First test port (503), the first port of the first test port (503) are connected with second movable contact (2), and first The second port of test port (503) is connected with the bluetooth comprehensive test instrument；The industrial control computer is specifically used in the case where default radio frequency testing project is to requiring Devices to test antenna opening to receive When row signal strength is higher than preset signal strength, first movable contact (1) is controlled to be connected with first stationary contact (11), the Two movable contacts (2) are connected with the first normally-closed contact (NC1), and the transmitter and receiver of device under test carries out radio-frequency performance survey Examination.
- 5. bluetooth equipment radio frequency test system as claimed in claim 4, it is characterised in that the RF switch case further includes： Second radio frequency testing path, the bluetooth comprehensive test instrument, spectrum analyzer and Devices to test is connected, in default radio frequency testing Project is connected to requiring Devices to test antenna opening to receive when downlink signal intensity is less than preset signal strength, device under test Transmitter carries out the test of frequency domain or time domain project.
- 6. bluetooth equipment radio frequency test system as claimed in claim 5, it is characterised in that the second radio frequency testing path bag Include：First annular device (504), the first annular device (504) include three ports, its first port and the second switch (K6) the first normally opened contact (NO1) connection, what downlink signal and Devices to test for bluetooth comprehensive test instrument to be sent were sent Row Signal separator；First isolator (505), first isolator (505) include two ports, its first port with it is described first annular The second port connection of device (504), for the uplink signal one direction transmission for ensureing to pass through；Power splitter (506), the power splitter (506) include three ports, its first port and first isolator (505) Second port connect, for uplink signal to be shunted to spectrum analyzer, on spectrum analyzer carry out transmitter frequency domain or when The test of domain project；Second circulator (518), second circulator (518) include three ports, the first port of the second circulator (518) It is connected with the second port of the power splitter (506), the downlink signal and Devices to test for bluetooth comprehensive test instrument to be sent are sent Uplink signal separation；3rd switch (K2), including：3rd movable contact (3), the second normally-closed contact (NC2) and the second normally opened contact (NO2)；It is described 3rd movable contact (3) is connected with the second port of second circulator (518), second normally-closed contact (NC2) with it is described The second stationary contact (12) connection of first switch (K9)；Second test port (509), the first port of the second test port (509) connect with the input terminal of the spectrum analyzer Connect；Second isolator (510), second isolator (510) include two ports, first port and second test lead The second port connection of mouth (509), the second port of the second isolator (510) connect with the 3rd port of the power splitter (506) Connect, for the uplink signal one direction transmission for ensureing to send from equipment to be tested；4th isolator (521), the 4th isolator (521) include two ports, the first port of the 4th isolator (521) It is connected with the 3rd port of first annular device (504), for the downlink signal one direction transmission for ensureing to send from bluetooth comprehensive test instrument；3rd isolator (520), the 3rd isolator (520) include two ports, first port and the 4th isolator (521) Second port connection, for the downlink signal one direction transmission for ensureing to send from bluetooth comprehensive test instrument；First combiner (529), first combiner (529) include four ports, first port and the 3rd isolator (520) Second port connection；9th isolator (526), the 9th isolator (526) include two ports, first port and the first combiner (529) Second port connection, for the downlink signal one direction transmission for ensureing to send from bluetooth comprehensive test instrument；Tenth isolator (527), the tenth isolator (527) include two ports, first port and the 9th isolator (526) Second port connection, the second port of the tenth isolator (527) is connected with the 3rd port of the second circulator (518), is used for Ensure the downlink signal one direction transmission sent from bluetooth comprehensive test instrument；The industrial control computer is specifically used in the case where default radio frequency testing project is to requiring Devices to test antenna opening to receive When row signal strength is less than preset signal strength, first movable contact (1) is controlled to be connected with second stationary contact (12), the Three movable contacts (3) are connected with the second normally-closed contact (NC2), the second movable contact (2) and the first normally opened contact of second switch (K6) (NO1) connect, the transmitter of device under test carries out the test of frequency domain or time domain project.
- 7. bluetooth equipment radio frequency test system as claimed in claim 6, it is characterised in that the RF switch case further includes： 3rd radio frequency testing path, the bluetooth comprehensive test instrument, vector signal generator and Devices to test is connected, for device under test Receiver carry out the anti-interference C/I projects of radio frequency test.
- 8. bluetooth equipment radio frequency test system as claimed in claim 7, it is characterised in that the 3rd radio frequency testing path bag Include：4th test port (512), the first port of the 4th test port (512) and the output terminal of the vector signal generator Connection；6th isolator (523), the first port of the 6th isolator (523) and the second end of the 4th test port (512) Mouth connection, for the vector disturbance signal one direction transmission for ensureing to send from vector signal generator；5th isolator (522), the first port of the 5th isolator (522) and the second port of the 6th isolator (523) Connection, for the vector disturbance signal one direction transmission for ensureing to send from vector signal generator；The second port of 5th isolator (522) is connected with the 3rd port of first combiner (529), the first combining Device (529) is used to vector disturbance signal being combined with the downlink signal one direction sent from bluetooth comprehensive test instrument；The industrial control computer is specifically used for controlling first movable contact (1) to connect with second stationary contact (12), Second movable contact (2) and the first normally opened contact (NO1) of second switch (K6) are connected, the 3rd movable contact of the 3rd switch (K2) (3) connected with the second normally-closed contact (NC2), the receiver of device under test carries out the test of the anti-interference C/I projects of radio frequency.
- 9. bluetooth equipment radio frequency test system as claimed in claim 8, it is characterised in that the RF switch case further includes： 4th radio frequency testing path, the bluetooth comprehensive test instrument, vector signal generator, analog signal generator and Devices to test are connected Connect, the receiver for device under test carries out the test of intermodulation project.
- 10. bluetooth equipment radio frequency test system as claimed in claim 9, it is characterised in that the 4th radio frequency testing path Including：3rd test port (511), the first port of the 3rd test port (511) and the output terminal of the analog signal generator Connection；4th switch (K3), including：4th movable contact (4), the 3rd normally-closed contact (NC3) and the 3rd normally opened contact (NO3)；It is described 4th movable contact (4) is connected with the second port of the 3rd test port (511)；8th isolator (525), the first port of the 8th isolator (525) and the 3rd normally-closed contact of the described 4th switch (K3) (NC3) connect, for the mono-tone interference signal one direction transmission for ensureing to send from analog signal generator；7th isolator (524), the first port of the 7th isolator (524) are connected with the second port of the 8th isolator (525), For the mono-tone interference signal one direction transmission for ensureing to send from analog signal generator；The second port of 7th isolator (524) is connected with the 4th port of first combiner (529), the first combining Device (529) is used to carry out mono-tone interference signal, vector disturbance signal with the downlink signal one direction sent from bluetooth comprehensive test instrument Combining；The industrial control computer is specifically used for controlling first movable contact (1) to connect with second stationary contact (12), Second movable contact (2) and the first normally opened contact (NO1) of second switch are connected, the 3rd movable contact (3) and second of the 3rd switch Normally-closed contact (NC2) is connected, and the 4th movable contact (4) and the 3rd normally-closed contact (NC3) of the 4th switch are connected, device under test Receiver carries out the test of intermodulation project.
- 11. bluetooth equipment radio frequency test system as claimed in claim 10, it is characterised in that the RF switch case also wraps Include：5th radio frequency testing path, the bluetooth comprehensive test instrument, analog signal generator and Devices to test is connected, for to be measured The receiver of equipment carries out the test of the anti-interference obstruction project of radio frequency.
- 12. bluetooth equipment radio frequency test system as claimed in claim 11, it is characterised in that the 5th radio frequency testing path Including：Second combiner (517), second combiner (517) include three ports, the first port of the second combiner (517) It is connected with the 3rd stationary contact (13) of the first switch (K9), for the mono-tone interference signal for sending analog signal generator Downlink signal one direction with being sent from bluetooth comprehensive test instrument is combined；Second attenuator (528), the first port of the second attenuator (528) are connected with the second port of the second combiner (517), The second port of second attenuator (528) is connected with the second normally opened contact (NO2) of the described 3rd switch (K2)；First attenuator (527 '), the first port of the first attenuator (527 ') connect with the 3rd port of the second combiner (517) Connect, for link impedance matching；5th switch (K4), including：5th movable contact (5), the 4th normally-closed contact (NC4) and the 4th normally opened contact (NO4)；It is described 5th movable contact (5) is connected with the second port of the first attenuator (527 ')；6th switch (K5) includes：6th movable contact (6), the 5th normally-closed contact (NC5) and the 5th normally opened contact (NO5)；5th Normally-closed contact (NC5) be connected with the 4th normally-closed contact (NC4) of the 5th switch (K4), the 6th movable contact (6) and described the The 3rd normally opened contact (NO3) connection of four switches (K3)；The industrial control computer is specifically used for the first movable contact (1) and the 3rd stationary contact for controlling the first switch (K9) (13) to connect, the second movable contact (2) of second switch (K6) is connected with the first normally opened contact (NO1), and the of the 3rd switch (K2) Three movable contacts (3) are connected with the second normally opened contact (NO2), the 4th movable contact (4) and the 3rd normally opened contact of the 4th switch (K3) (NO3) to connect, the 5th movable contact (5) and the 4th normally-closed contact (NC4) of the 5th switch (K4) are connected, and the of the 6th switch (K5) Six movable contacts (6) are connected with the 5th normally-closed contact (NC5), and the 4th normally-closed contact (NC4) is connected with the 5th normally-closed contact (NC5), The receiver of device under test carries out the test of intermodulation project.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201721080539.8U CN207283563U (en) | 2017-08-28 | 2017-08-28 | Bluetooth equipment radio frequency test system |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201721080539.8U CN207283563U (en) | 2017-08-28 | 2017-08-28 | Bluetooth equipment radio frequency test system |
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| CN207283563U true CN207283563U (en) | 2018-04-27 |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359944A (en) * | 2017-08-28 | 2017-11-17 | 中国信息通信研究院 | Bluetooth equipment radio frequency test system |
| CN110350988A (en) * | 2019-07-30 | 2019-10-18 | 中国信息通信研究院 | The OTA Performance Test System of intelligent wearable device under disturbed condition |
| EP3709033A1 (en) * | 2019-03-14 | 2020-09-16 | Rohde & Schwarz GmbH & Co. KG | Performance test system for testing a complex system under test |
| CN115102640A (en) * | 2022-06-21 | 2022-09-23 | 深圳市易飞扬通信技术有限公司 | Product testing method and device, computer equipment and storage medium |
-
2017
- 2017-08-28 CN CN201721080539.8U patent/CN207283563U/en active Active
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107359944A (en) * | 2017-08-28 | 2017-11-17 | 中国信息通信研究院 | Bluetooth equipment radio frequency test system |
| CN107359944B (en) * | 2017-08-28 | 2024-04-09 | 中国信息通信研究院 | Bluetooth equipment radio frequency test system |
| EP3709033A1 (en) * | 2019-03-14 | 2020-09-16 | Rohde & Schwarz GmbH & Co. KG | Performance test system for testing a complex system under test |
| CN110350988A (en) * | 2019-07-30 | 2019-10-18 | 中国信息通信研究院 | The OTA Performance Test System of intelligent wearable device under disturbed condition |
| CN110350988B (en) * | 2019-07-30 | 2022-02-25 | 中国信息通信研究院 | OTA performance test system of intelligent wearable equipment under interference condition |
| CN115102640A (en) * | 2022-06-21 | 2022-09-23 | 深圳市易飞扬通信技术有限公司 | Product testing method and device, computer equipment and storage medium |
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Inventor after: Liu Jing Inventor after: Zhang Zhiwei Inventor after: Wei Yang Inventor after: Yang Bo Inventor after: Li Zuozhao Inventor before: Liu Jing Inventor before: Zhang Zhiwei Inventor before: Wei Yang Inventor before: Yang Bo Inventor before: Li Zuozhao |