CN206575423U - Spurious emissions signal test system - Google Patents
Spurious emissions signal test system Download PDFInfo
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- CN206575423U CN206575423U CN201720197262.0U CN201720197262U CN206575423U CN 206575423 U CN206575423 U CN 206575423U CN 201720197262 U CN201720197262 U CN 201720197262U CN 206575423 U CN206575423 U CN 206575423U
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Abstract
The utility model is related to spurious emissions signal test system, including be linked in sequence signal separation unit, signal attenuation unit, signal gathering unit；The signal separation unit includes 7 combiners, 4 duplexers, 1 adjustable attenuator, and signal attenuation unit is made up of 14 adjustable attenuators；Signal gathering unit is made up of 14 power probes and 1 computer.The utility model can realize that different capacity grade radio signal launches the spurious emissions signal testing of equipment, and the signal input power for effectively solving traditional spurious emissions signalling arrangement is low, the problems such as signal acquisition is difficult.
Description
Technical field
The utility model belongs to Radio Measurement field, is particularly used for measuring the miscellaneous of high-power wireless electricity transmitting equipment
The system product of transmission signal is dissipated, can be with fast, efficient, safe the spuious hair for completing below 49dBm radio transition equipments
Penetrate the measurement of signal.
Background technology
With the fast development of China's mobile communication technology and increasing for mobile subscriber, mobile operator is in order to preferably
Service is mobile to be used to run multiple GSMs simultaneously.Typical signal at least 6 kinds signals of communication of covering scene enter
Row covering, similar to the up to 13 kinds signals of communication such as airport, subway.The problem of inevitable face of signal covering more than this is more, and
It is exactly more complicated spurious emissions signal measurement problem that Radio Measurement field multi-signal, which coexists bring,.
Spurious emissions signal testing can be carried out using bandstop filter more than traditional spurious emissions signal measurement, this is in small work(
Rate radio transition equipment measurement has no problem, but powerful radio transition equipment is can not to use bandreject filtering
What device was tested.Bandstop filter uses cavity body structure and is designed first, and carrier signal is due to bandstop filter
High standing wave and cause signal to be totally reflected, high-power wireless electricity transmitting equipment is typically using multistage amplification, and reflected signal is crossed conference and made
The event burnt is caused often to have generation into final power amplifier operation irregularity, secondly traditional spurious emissions measuring apparatus collection
Low into spending, each measurement frequency range will be tested individually, and be needed device powers down, so have a strong impact on test effect
Rate, therefore it is exactly to measure spurious emissions that each Test Engineer is most bored.Additionally due to the design difficulty of bandstop filter
Greatly, there is the measurement bandstop filter of a full set in few companies or laboratory, and experienced survey engineer typically can be using classification
The mode of calculating is measured, but such measuring method is very limited, it is necessary to disassembled to equipment under test, be classified into
Row is tested and calculated, and whole test job amount lifts nearly more than 5 times.
The content of the invention
In view of the shortcomings of the prior art, the utility model, which is provided, a kind of can realize that below 49dBm radio transmitting is set
It is standby, while can at most complete 13 road signal spurious emissions signal test systems.
The technical scheme that the utility model is used to achieve the above object is：Spurious emissions signal test system, including
The signal separation unit that is linked in sequence, signal attenuation unit, signal gathering unit；The signal separation unit is used to connect tested
Equipment；The signal gathering unit is used to connect computer.
The signal separation unit includes adjustable attenuator, multiple combiners, multiple duplexers；And provided with input port and
Multiple ports for being used to export；Input port is used to connect Devices to test, and the port for output is connected with signal attenuation unit.
In the signal separation unit：The input of combiner 1 is connected with input port, two output ends respectively with combiner
2 inputs, the connection of adjustable attenuator input；Adjustable attenuator output end is connected with port 14；Three output ends of combiner 2
It is connected respectively with the input of combiner 3, the input of combiner 4, the input of combiner 5；Three output ends of combiner 3 respectively with
The input of duplexer 1, the input of duplexer 2, the connection of the input of duplexer 3；Two output ends of combiner 4 respectively with duplexer
7 inputs, the connection of the input of duplexer 4；Two output ends of combiner 5 are connected with the input of combiner 6, port 13 respectively；
Two output ends of duplexer 1, two output ends of duplexer 2, two output ends of duplexer 3, two outputs of duplexer 7
End, duplexer 4 two output ends successively with port 1, port 2, port 3, port 4, port 5, port 6, port 7, port 8,
Port 9, port 10, port 11, port 12 are connected.
The signal attenuation unit includes multiple adjustable attenuators；The input and Signal separator list of each adjustable attenuator
Certain port of member is connected by RF cable, and output end and the signal gathering unit of each adjustable attenuator pass through RF cable phase
Connection.
The signal gathering unit includes multiple power probes, serial bus concentrator；The input of each power probe
It is connected with the output end of certain adjustable attenuator by radio-frequency cable, the output end serial bus concentrator connection of power probe；String
Row bus hub is used to connect computer.
The power probe is 14.The serial bus concentrator is 2.
The utility model has the advantages that and advantage：
1. the spurious signal collection on 14 tunnels can be completed simultaneously, it is very big compared with like product testing efficiency lifting amplitude.
2. pair equipment under test power requirement reduction, traditional spurious emissions signal test system its require that measured power exists
Below 20W, but the utility model maximum can carry below 80W equipment under test, such as incorporation engineering teacher experience maximum can be with
Carry out the spurious emissions signal testing of 200W radio transition equipment.
3. system regular maintenance is convenient and can be realized more in this platform technology according to the development of subsequent technology
Spurious emissions signal, more powerful spurious emissions signal testing.
4. of the present utility model carried out Centralized Monitoring to power output, it is easy to tester while observing multiple signals
Disturbance state.It is simple and convenient.
5. it can realize that different capacity grade radio signal launches the spurious emissions signal testing of equipment, it is effective to solve
The signal input power of traditional spurious emissions signalling arrangement is low, the problems such as signal acquisition is difficult.
Brief description of the drawings
Fig. 1 is structured flowchart of the present utility model；
Fig. 2 is structure principle chart of the present utility model；
Fig. 3 is the structure principle chart of signal separation unit.
Embodiment
Below in conjunction with the accompanying drawings and embodiment is described in further detail to the utility model.
The utility model includes signal separation unit, signal attenuation unit, signal gathering unit and constituted.The utility model can
With the spurious emissions signal testing for the radio transition equipment for supporting routine below 80W.What is used inside the utility model is passive
Module is by the interference of intermodulation product in advanced production technology reduction system, and system is tested oneself intermodulation ＜ -165dBc@46dBm；This
Utility model uses high-precision power probe, can accurately measure the frequency range and amplitude of spurious signal.
By a variety of combiners and duplexer to the different transmission properties of signal by all transmittings of radio transition equipment
Signal is separated；The utility model includes the signal separation unit, signal attenuation unit, signal gathering unit being linked in sequence,
Input port port is used to connect equipment under test.
Spurious emissions signal test system, including be linked in sequence signal separation unit, signal attenuation unit, signal acquisition
Unit；
The signal separation unit includes multiple combiners, duplexer, adjustable attenuator, input port, output port；It is defeated
Inbound port is used to connect Devices to test, and output port is used to connect signal attenuation unit.
The signal attenuation unit includes the adjustable attenuator of 14 autonomous workings；The input port of each adjustable attenuator
Be connected respectively with the output port of signal separation unit by RF cable, the output port of each adjustable attenuator respectively with letter
Number collecting unit is connected by RF cable.
The signal gathering unit includes the power probe of 14 autonomous workings, 2 universal serial bus concentrators and 1
Platform computer；Output port of the input port of each power probe respectively with signal attenuation unit is connected by radio-frequency cable
Connect, the output port of each adjustable attenuator is connected with signal gathering unit respectively；2 universal serial bus concentrators pass through control
Line processed is connected with computer.
Combiner and duplexer are multiple.Adjustable attenuator is multiple.Multiple power probes pass through 2 USBs
Hub is connected with computer.Adjustable attenuator has decay adjustable function.
As shown in figure 3, signal separation unit includes 7 different types of combiners, 4 different types of duplexers, 1
Input port, 14 output ports；Input port is used to connect equipment under test, 14 output ports by radio-frequency cable respectively with
Signal attenuation unit is connected；The cavity number of 7 combiners is different, and 3 cavity numbers in 4 duplexers are identical, another
It is different.The combiner and duplexer technical specification such as table one of each type：
Table one
The signal attenuation unit includes the adjustable attenuator independently worked；The model and index of adjustable attenuator are shown in Table
Two：
Table two
| Title | Attenuator model | Maximal input |
| Adjustable attenuator 1 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 2 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 3 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 4 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 5 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 6 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 7 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 8 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 9 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 10 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 11 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 12 | GKTS10-2-50-2.5-A2 | 10W |
| Adjustable attenuator 13 | GKTS10-2-70-3-A2 | 10W |
| Adjustable attenuator 14 | GKTS10-2-70-6-A2 | 10W |
The signal gathering unit is made up of 14 power probes, 2 universal serial bus concentrators, 1 computer.
The power probe produces for Anjelen Sci. ＆ Tech. Inc, model U2001A.
14 power probes are connected by 2 universal serial bus concentrators with computer.
As shown in Figures 1 to 3, spurious emissions signal test system is designed as four major parts：Signal separation unit, signal attenuation
Unit, signal gathering unit, computer.
Signal separation unit is constituted using the passive cavity combiner and cavity duplexer of high q-factor；The design of low intermodulation makes
Its remnants mutually downgrades -165dBc 46dBm during proper progress multicarrier spurious emissions signal testing；
Signal attenuation unit：Using different types of adjustable attenuator.The adjustable extent that decays reaches 50dB；
Signal gathering unit：The dynamic of 9kHz to 6GHz can be achieved in the power probe (Agilent U2001A) of 14 autonomous workings
State step-length frequency sweep.
Computer：It is connected by 2 universal serial bus concentrators with 14 power probes.Computer will gather the number of coming
Test report is generated according to processing is carried out.
System Working Principle：
As shown in Figure 2：It is assumed that equipment under test is GSM 20W digital optical fiber direct stations, by the signal attenuation unit on 14 tunnels
Attenuation tunable is to maximum magnitude；The CF signal and spurious signal of GSM digital optical fiber direct stations together entering signal separative element,
Selection and separation by signal separation unit to different frequency range signal, the signal of different frequency range have entered signal attenuation list
Member, now turns all tuning knobs of signal attenuation unit down 10dB respectively, when the signal of computer acquisition is higher than 25dBm
Then stop turning decay down, and the pad value of adjustable attenuator now is entered into corresponding link；Power probe detects letter
The signal that number attenuation units are launched, which is acquired, to be reported in computer, and computer is calculated according to adjustable attenuator pad value
Spurious emissions signal actual value；
Application effect：
For example for 8 channel fiber compartment systems of Chinese steel tower group centralized purchasing, existing test system or test
The test that method such as completes a set of optical fiber distribution system needs 2 people while working more than 4 hours, and the data measured need people
Work carries out arrangement examination ＆ verification；And 1 people is only needed using spurious emissions signal test system, the test of a full set of optical fiber distribution system is only needed
Test can be just completed within 20 minutes, the test result degree of accuracy is high.In addition the system can need to increase other frequency ranges according to follow-up
Signal testing.
Claims (4)
1. spurious emissions signal test system, it is characterised in that：Including signal separation unit, the signal attenuation list being linked in sequence
Member, signal gathering unit；The signal separation unit is used to connect equipment under test；The signal gathering unit, which is used to connect, to be calculated
Machine；
The signal separation unit includes adjustable attenuator, multiple combiners, multiple duplexers；And it is provided with input port and multiple
Port for output；Input port is used to connect Devices to test, and the port for output is connected with signal attenuation unit；
The signal attenuation unit includes multiple adjustable attenuators；The input of each adjustable attenuator and signal separation unit
Certain port is connected by RF cable, and the output end of each adjustable attenuator is connected with signal gathering unit by RF cable
Connect；
The signal gathering unit includes multiple power probes, serial bus concentrator；The input of each power probe and certain
The output end of adjustable attenuator is connected by radio-frequency cable, the output end serial bus concentrator connection of power probe；It is serial total
Line hub is used to connect computer.
2. spurious emissions signal test system according to claim 1, it is characterised in that in the signal separation unit：Close
The input of road device 1 is connected with input port, two output ends are connected with the input of combiner 2, adjustable attenuator input respectively；
Adjustable attenuator output end is connected with port 14；Three output ends of combiner 2 are defeated with the input of combiner 3, combiner 4 respectively
Enter end, the connection of the input of combiner 5；Three output ends of combiner 3 respectively with the input of duplexer 1, the input of duplexer 2,
The input of duplexer 3 is connected；Two output ends of combiner 4 are connected with the input of duplexer 7, the input of duplexer 4 respectively；Close
Two output ends of road device 5 are connected with the input of combiner 6, port 13 respectively；Two output ends of duplexer 1, duplexer 2
Two output ends, two output ends of duplexer 3, two output ends of duplexer 7, two output ends of duplexer 4 successively with
Port 1, port 2, port 3, port 4, port 5, port 6, port 7, port 8, port 9, port 10, port 11, port 12 connect
Connect.
3. spurious emissions signal test system according to claim 1, it is characterised in that the power probe is 14.
4. spurious emissions signal test system according to claim 1, it is characterised in that the serial bus concentrator is 2
It is individual.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720197262.0U CN206575423U (en) | 2017-03-02 | 2017-03-02 | Spurious emissions signal test system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201720197262.0U CN206575423U (en) | 2017-03-02 | 2017-03-02 | Spurious emissions signal test system |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206575423U true CN206575423U (en) | 2017-10-20 |
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ID=60056317
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201720197262.0U Expired - Fee Related CN206575423U (en) | 2017-03-02 | 2017-03-02 | Spurious emissions signal test system |
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| Country | Link |
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| CN (1) | CN206575423U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401500A (en) * | 2018-04-25 | 2019-11-01 | 罗德施瓦兹两合股份有限公司 | Measuring device and measurement method |
-
2017
- 2017-03-02 CN CN201720197262.0U patent/CN206575423U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110401500A (en) * | 2018-04-25 | 2019-11-01 | 罗德施瓦兹两合股份有限公司 | Measuring device and measurement method |
| CN110401500B (en) * | 2018-04-25 | 2022-07-01 | 罗德施瓦兹两合股份有限公司 | Measuring device and measuring method |
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| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20171020 |
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| CF01 | Termination of patent right due to non-payment of annual fee |