CN205681429U - A kind of test device of repeater downgoing reflection inter-modulated signal - Google Patents
A kind of test device of repeater downgoing reflection inter-modulated signal Download PDFInfo
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- CN205681429U CN205681429U CN201620564575.0U CN201620564575U CN205681429U CN 205681429 U CN205681429 U CN 205681429U CN 201620564575 U CN201620564575 U CN 201620564575U CN 205681429 U CN205681429 U CN 205681429U
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- repeater
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- electric bridge
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Abstract
The utility model discloses the test device of a kind of repeater downgoing reflection inter-modulated signal, relate to field tests, described test device includes: calibrating installation and repeater to be tested, and described calibrating installation includes: the first signal source, secondary signal source, high intermodulation electric bridge, high inter-modulation duplexer and audiofrequency spectrometer；Described first signal source and described secondary signal source are all connected with described high intermodulation electric bridge by radio-frequency cable, described high intermodulation electric bridge is connected also by the transmission port of described radio-frequency cable with described high inter-modulation duplexer, the data transmission port of described high inter-modulation duplexer is connected with the base station port of described repeater to be tested by data wire, and the receiving port of described high inter-modulation duplexer is connected with described audiofrequency spectrometer by described radio-frequency cable.This utility model improves the accuracy of testing efficiency and test.
Description
Technical field
This utility model relates to field tests, particularly to the test device of a kind of repeater downgoing reflection inter-modulated signal.
Background technology
Repeater is a kind of relay wireless signals product, is the connection equipment on networked physics layer, and major function is to pass through
Data signal is resend or forwards and expand network transmission range.Outside its internal structure schematic diagram is as it is shown in figure 1, include
Hull structure component, first duplexer, the second duplexer, downlink power amplifier and up low-noise amplifier, base station signal is by base
Station port enters downlink power amplifier through first duplexer, then is entered external sky through the second duplexer by mobile phone port
Line, the radiofrequency signal that user terminal is launched enters the second duplexer through mobile phone port, then through up low-noise amplifier by base
Station port sends to base station.In order to ensure that repeater can proper communication, it usually needs the performance parameter of repeater is surveyed
Examination, and repeater downgoing reflection inter-modulated signal is an important indicator of repeater, if repeater downgoing reflection inter-modulated signal
Signal intensity is excessive, can be directly entered inside of base station, causes the problems such as base station communication quality difference, therefore, is using in repeater
Before, need the signal intensity of repeater downgoing reflection inter-modulated signal is tested.
In prior art, as in figure 2 it is shown, the test device of repeater downgoing reflection inter-modulated signal mainly includes the first signal
Source, secondary signal source, combiner, radio-frequency cable, audiofrequency spectrometer and repeater to be tested, the first signal source and secondary signal source all with
The input of combiner connects, and the outfan of combiner is by radio-frequency cable and the downlink power amplifier in repeater to be tested
Input connect, the input of audiofrequency spectrometer is defeated by radio-frequency cable and the up low-noise amplifier in repeater to be tested
Going out end to connect, and be placed in shielded box repeater to be tested, test process is: tester respectively by the first signal source and
The frequency in secondary signal source and output adjust to desired value, and the first signal source and secondary signal source export setting frequency respectively
Rate and the pulse signal of output, this pulse signal feeds back to show on audiofrequency spectrometer after the internal reflection of repeater,
Now according to the signal intensity of display on audiofrequency spectrometer, tester determines whether repeater downgoing reflection inter-modulated signal meets in advance
If index.
But the test device of above-mentioned repeater downgoing reflection inter-modulated signal is before testing, need to open the shell knot of repeater
Component, repeater of then the outwarding winding internal radio frequency interface being connected with upstream noise amplifier and being connected with downlink power amplifier
Radio frequency interface, then radio-frequency cable is connected with the two radio frequency interface respectively, and when the test of repeater downgoing reflection inter-modulated signal
After end, needing to be dismantled by radio-frequency cable, the integrity of such repeater is destroyed, thus affects the survey of repeater again
Examination accuracy, and testing efficiency is low.
Utility model content
In view of this, this utility model provides the test device of a kind of repeater downgoing reflection inter-modulated signal, improves survey
Examination efficiency and the accuracy of test.
This utility model solves the problems referred to above by techniques below means:
The test device of a kind of repeater of the present utility model downgoing reflection inter-modulated signal, including calibrating installation and to be tested
Repeater, described calibrating installation includes: the first signal source, secondary signal source, high intermodulation electric bridge, high inter-modulation duplexer and frequency spectrum
Instrument；
Described first signal source is connected with the first input end of described high intermodulation electric bridge；Described secondary signal source and described height
Second input of intermodulation electric bridge connects；The outfan of described high intermodulation electric bridge connects with the emission port of described high inter-modulation duplexer
Connect；The data transmission port of described high inter-modulation duplexer is connected with the base station port of described repeater to be tested；Described high intermodulation
The receiving port of duplexer is connected with described audiofrequency spectrometer.
Further, electromagnetic shielding chamber, described first signal source, secondary signal source, high intermodulation electric bridge, high intermodulation are also included
Duplexer and audiofrequency spectrometer are placed in described electromagnetic shielding chamber interior.
Further, described first signal source and described secondary signal source are all by radio-frequency cable and described high intermodulation electric bridge
Connecting, described high intermodulation electric bridge is connected by the transmission port of described radio-frequency cable with described high inter-modulation duplexer, and described height is mutual
The data transmission port adjusting duplexer is connected with the base station port of described repeater to be tested by data wire, and described high intermodulation is double
The receiving port of multiplexer is connected with described audiofrequency spectrometer by described radio-frequency cable.
Further, the data transmission port of described high inter-modulation duplexer to be tested is directly put with described by RS232 bus
The base station port stood connects.
Further, described repeater to be tested is frequency selecting repeater.
Further, described repeater to be tested is broad band repeater.
The test device of a kind of repeater of the present utility model downgoing reflection inter-modulated signal has the advantages that
The test device of repeater of the present utility model downgoing reflection inter-modulated signal includes the first signal source, secondary signal
Source, high intermodulation electric bridge, high inter-modulation duplexer, audiofrequency spectrometer and repeater to be tested, wherein, described first signal source is mutual with described height
The first input end adjusting electric bridge connects；Described secondary signal source is connected with the second input of described high intermodulation electric bridge；Described height
The outfan of intermodulation electric bridge is connected with the emission port of described high inter-modulation duplexer；The data transmission terminal of described high inter-modulation duplexer
Mouth is connected with the base station port of described repeater to be tested；The receiving port of described high inter-modulation duplexer is with described audiofrequency spectrometer even
Connect.First signal source and the secondary signal source descending letter in the two-way repeater to be tested working frequency range exporting different frequency
Number, high intermodulation electric bridge closes road for carrying out two-way downstream signal, high inter-modulation duplexer carry out processing for involutory road signal and
Forwarding, from the foregoing, test device of the present utility model includes calibrating installation, calibrating installation is entering with repeater to be tested
Row connect time, it is only necessary to by the high inter-modulation duplexer in calibrating installation with repeater to be tested is connected with first duplexer outside
Portion's radio frequency interface connects, it is not necessary to opened by the shell mechanism part of repeater to be tested, so, and repeater to be tested complete
Whole property is not destroyed, thus improves the accuracy of testing efficiency and test.
Accompanying drawing explanation
With embodiment, this utility model is further described below in conjunction with the accompanying drawings.
Fig. 1 is the internal structure block diagram of repeater；
Fig. 2 is the structured flowchart of the test device of a kind of repeater of the prior art downgoing reflection inter-modulated signal；
Fig. 3 is the structured flowchart of the test device of a kind of repeater of the present utility model downgoing reflection inter-modulated signal；
Fig. 4 is the structured flowchart of the test device of another kind of repeater of the present utility model downgoing reflection inter-modulated signal.
Detailed description of the invention
Below with reference to accompanying drawing, this utility model is described in detail, as shown in Figure 3: a kind of repeater of the present embodiment
The test device of downgoing reflection inter-modulated signal, including: calibrating installation 10 and repeater to be tested 11, described calibrating installation 10 wraps
Include: the first signal source 111, secondary signal source 112, high intermodulation electric bridge 113, high inter-modulation duplexer 114 and audiofrequency spectrometer 115.
Described first signal source 111 and described secondary signal source 112 are all by radio-frequency cable and described high intermodulation electric bridge 113
Connecting, described high intermodulation electric bridge 113 is connected also by the transmission port of described radio-frequency cable with described high inter-modulation duplexer 114,
The data transmission port of described high inter-modulation duplexer 114 is connected by the base station port of data wire with described repeater 11 to be tested
Connecing, the receiving port of described high inter-modulation duplexer 114 is connected with described audiofrequency spectrometer 115 by described radio-frequency cable.
In the present embodiment, the data transmission port of described high inter-modulation duplexer 114 is to be tested with described by RS232 bus
The base station port of repeater 11 connects.
In the present embodiment, described repeater 11 to be tested is frequency selecting repeater, or, described repeater 11 to be tested is wide
Band repeater.
Wherein, frequency selecting repeater has Channel assignment function, it is necessary to could amplify working signal after opening working channel,
It is not turned on working channel and there is no enlarging function；And bandwidth repeater does not has Channel assignment function, bandwidth repeater whole
Individual bandwidth of operation all can amplify.
It should be noted that before test, tester needs to calibrate calibrating installation 10, and the purpose of calibration is
Whether the intermodulation index of calibration tester device and accessory itself is less than the intermodulation index being devices under, if calibration result is more than
The intermodulation index being devices under, illustrates that testing device itself does not meets test request.
Concrete, the first signal source 111 and secondary signal source 112 are for exporting the two-way repeater to be tested of different frequency
Downstream signal in 11 working frequency range, this two-way downstream signal transmits paramount intermodulation electric bridge 113, carries out through high intermodulation electric bridge 113
Closing transmission behind road in the high inter-modulation duplexer 114 in repeater 11 to be tested, high inter-modulation duplexer 114 is for receiving
Close the transmission of road signal to repeater 11 to be tested the first duplexer of internal (as shown in Figure 1), then through downlink power amplifier and
Produce the downgoing reflection inter-modulated signal at direct end uplink working frequency range to be tested, this downgoing reflection intermodulation after second duplexer
Signal enters high inter-modulation duplexer 114 through up low-noise amplifier and first duplexer, high inter-modulation duplexer 114 will connect
The downgoing reflection inter-modulated signal received is transmitted to audiofrequency spectrometer 115 by radio-frequency cable, then to receive this descending for final audiofrequency spectrometer 115
Reflecting the intensity of inter-modulated signal and show, now tester can be according to the downgoing reflection inter-modulated signal of audiofrequency spectrometer 115 display
Intensity determines whether to meet requirement, it is achieved the test to repeater 11 to be tested downgoing reflection inter-modulated signal.
Wherein, the first signal source 111 and secondary signal source 112 are similar signal source, and signal source is also known as signal generator
Or agitator, is a kind of to be provided that various frequency, waveform and the equipment of the output level signal of telecommunication.Measuring various telecommunication systems
Or when the amplitude response of telecommunication apparatus, frequency characteristic, transmission characteristic and the characteristic of measurement components and parts and parameter, it is used as test
Signal source or driving source, have a wide range of applications in production practices and sciemtifec and technical sphere.
High intermodulation electric bridge 113 is also same frequency combiner, and it can determine on direction transmission merit along a certain of transmission line
Rate continuous sampling, can be divided into an input signal two constant amplitudes and have the signal of 90 ° of phase contrasts each other, be mainly used in believing more
Number close road, improve the utilization rate of output signal, be widely used in indoor covering system the conjunction road to base station signal, use effect
Very well.
High inter-modulation duplexer 114 is alien frequencies two-way radios, is the key fitment of trunk desk, and its effect is by transmitting and to receive
Signal is isolated, it is ensured that receives and launches and can normally work simultaneously, is made up of the band elimination filter of two groups of different frequencies, keeps away
Exempt from the machine transmitting signal and be transferred to receiver.
Audiofrequency spectrometer 115 has another name called spectrum analyzer, is that equipment is measured in a kind of test costly, is mainly used in radio frequency and microwave
The frequency-domain analysis of signal, including measuring the power of signal, frequency, distortion product etc., and the audiofrequency spectrometer of advanced person can to radio frequency and
Microwave signal is demodulated analyzing, also referred to as signal analyzer.
As the further improvement of technique scheme, as shown in Figure 4, repeater of the present utility model downgoing reflection intermodulation
The test device of signal also includes: electromagnetic shielding chamber 13, described first signal source 111, secondary signal source 112, high intermodulation electric bridge
113, high inter-modulation duplexer 114 and audiofrequency spectrometer 115 are placed in described electromagnetic shielding chamber 13 inside.
Wherein, electromagnetic shielding chamber 13 can isolate outside electromagnetic interference very well, it is ensured that repeater 11 to be tested and audiofrequency spectrometer
115 can not be by external electromagnetic signal disturbing, it is ensured that test result is accurately, reliably.This electromagnetic shielding chamber 13 can also pass through electromagnetism
Screened room blocks indoor electromagnetic radiation and outwardly spreads, and strong electromagnetic radiation source should give shielding isolation, prevents from disturbing other
Electronics, electrical equipment normally work even infringement staff healthy.
The test device of repeater of the present utility model downgoing reflection inter-modulated signal includes the first signal source, secondary signal
Source, high intermodulation electric bridge, high inter-modulation duplexer, audiofrequency spectrometer and repeater to be tested, wherein, the first signal source and secondary signal source are equal
Being connected with high intermodulation electric bridge by radio-frequency cable, high intermodulation electric bridge is connected by the transmission port of radio-frequency cable with high inter-modulation duplexer
Connecing, the data transmission port of high inter-modulation duplexer is connected with the base station port of repeater to be tested by data wire, and high intermodulation is double
The receiving port of multiplexer is connected with audiofrequency spectrometer by radio-frequency cable, and the first signal source and secondary signal source are used for exporting different frequency
Two-way repeater to be tested working frequency range in downstream signal, high intermodulation electric bridge closes road for carrying out two-way downstream signal,
High inter-modulation duplexer processes for involutory road signal and forwards, from the foregoing, wrap in test device of the present utility model
Including calibrating installation, calibrating installation is when being attached with repeater to be tested, it is only necessary to by the high intermodulation duplex in calibrating installation
Device connects with the external radio frequency interface being connected with first duplexer in repeater to be tested, it is not necessary to by repeater to be tested
Shell mechanism part, so, the integrity of repeater to be tested is not destroyed, thus improves the standard of testing efficiency and test
Really property.It addition, this utility model is by equal to the first signal source, secondary signal source, high intermodulation electric bridge, high inter-modulation duplexer and audiofrequency spectrometer
Being placed in electromagnetic shielding chamber interior, such spatial electromagnetic signal, such as broadcast station signal, 2G, 3G, 4G mobile communication signal etc. are no
Can be conducted to audiofrequency spectrometer by radio-frequency cable, then will not produce various interference signal on audiofrequency spectrometer, further increase test
Accuracy.
Finally illustrating, above example is only in order to illustrate the technical solution of the utility model and unrestricted, although ginseng
According to preferred embodiment, this utility model is described in detail, it will be understood by those within the art that, can be to this
The technical scheme of utility model is modified or equivalent, without deviating from objective and the model of technical solutions of the utility model
Enclosing, it all should be contained in the middle of right of the present utility model.
Claims (6)
1. the test device of a repeater downgoing reflection inter-modulated signal, it is characterised in that: include calibrating installation and to be tested directly
Putting station, described calibrating installation includes: the first signal source, secondary signal source, high intermodulation electric bridge, high inter-modulation duplexer and audiofrequency spectrometer；
Described first signal source is connected with the first input end of described high intermodulation electric bridge；Described secondary signal source and described high intermodulation
Second input of electric bridge connects；The outfan of described high intermodulation electric bridge is connected with the emission port of described high inter-modulation duplexer；
The data transmission port of described high inter-modulation duplexer is connected with the base station port of described repeater to be tested；Described high intermodulation duplex
The receiving port of device is connected with described audiofrequency spectrometer.
The test device of repeater the most according to claim 1 downgoing reflection inter-modulated signal, it is characterised in that: also include electricity
Magnetic shield room, described first signal source, secondary signal source, high intermodulation electric bridge, high inter-modulation duplexer and audiofrequency spectrometer are placed in described
Electromagnetic shielding chamber interior.
The test device of repeater the most according to claim 1 downgoing reflection inter-modulated signal, it is characterised in that: described first
Signal source and described secondary signal source are all connected with described high intermodulation electric bridge by radio-frequency cable, and described high intermodulation electric bridge passes through institute
Stating radio-frequency cable to be connected with the transmission port of described high inter-modulation duplexer, the data transmission port of described high inter-modulation duplexer is passed through
Data wire is connected with the base station port of described repeater to be tested, and the receiving port of described high inter-modulation duplexer passes through described radio frequency
Cable is connected with described audiofrequency spectrometer.
The test device of repeater the most according to claim 3 downgoing reflection inter-modulated signal, it is characterised in that: described height is mutual
The data transmission port adjusting duplexer is connected with the base station port of described repeater to be tested by RS232 bus.
The test device of repeater the most according to claim 1 downgoing reflection inter-modulated signal, it is characterised in that: described to be measured
Examination repeater is frequency selecting repeater.
The test device of repeater the most according to claim 1 downgoing reflection inter-modulated signal, it is characterised in that: described to be measured
Examination repeater is broad band repeater.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201620564575.0U CN205681429U (en) | 2016-06-12 | 2016-06-12 | A kind of test device of repeater downgoing reflection inter-modulated signal |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201620564575.0U CN205681429U (en) | 2016-06-12 | 2016-06-12 | A kind of test device of repeater downgoing reflection inter-modulated signal |
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| CN205681429U true CN205681429U (en) | 2016-11-09 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124235A (en) * | 2017-04-26 | 2017-09-01 | 中国空间技术研究院 | Passive intermodulation wireless test system under a kind of hot vacuum environment |
| CN110611534A (en) * | 2019-09-10 | 2019-12-24 | 三维通信股份有限公司 | Optical fiber repeater and method and system for detecting passive intermodulation signal thereof |
| CN112994834A (en) * | 2021-02-05 | 2021-06-18 | 陕西天基通信科技有限责任公司 | Method for shielding mobile signal, 5G repeater, server and storage medium |
| CN115426227A (en) * | 2022-08-05 | 2022-12-02 | 四川天邑康和通信股份有限公司 | Method and system for setting carrier frequency of repeater and repeater |
| CN116054869A (en) * | 2023-03-31 | 2023-05-02 | 深圳市德雄科技有限公司 | Integrated signal combiner |
-
2016
- 2016-06-12 CN CN201620564575.0U patent/CN205681429U/en not_active Expired - Fee Related
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107124235A (en) * | 2017-04-26 | 2017-09-01 | 中国空间技术研究院 | Passive intermodulation wireless test system under a kind of hot vacuum environment |
| CN110611534A (en) * | 2019-09-10 | 2019-12-24 | 三维通信股份有限公司 | Optical fiber repeater and method and system for detecting passive intermodulation signal thereof |
| CN110611534B (en) * | 2019-09-10 | 2021-03-23 | 三维通信股份有限公司 | Optical fiber repeater and method and system for detecting passive intermodulation signal thereof |
| CN112994834A (en) * | 2021-02-05 | 2021-06-18 | 陕西天基通信科技有限责任公司 | Method for shielding mobile signal, 5G repeater, server and storage medium |
| CN115426227A (en) * | 2022-08-05 | 2022-12-02 | 四川天邑康和通信股份有限公司 | Method and system for setting carrier frequency of repeater and repeater |
| CN116054869A (en) * | 2023-03-31 | 2023-05-02 | 深圳市德雄科技有限公司 | Integrated signal combiner |
| CN116054869B (en) * | 2023-03-31 | 2023-09-12 | 深圳市德雄科技有限公司 | Integrated signal combiner |
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| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20161109 Termination date: 20200612 |