CN101789831A - Millimeter wave communication test system - Google Patents
Millimeter wave communication test system Download PDFInfo
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- CN101789831A CN101789831A CN200910200850A CN200910200850A CN101789831A CN 101789831 A CN101789831 A CN 101789831A CN 200910200850 A CN200910200850 A CN 200910200850A CN 200910200850 A CN200910200850 A CN 200910200850A CN 101789831 A CN101789831 A CN 101789831A
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Abstract
The invention relates to a millimeter wave communication test system which comprises a receiving unit, a frequency spectrum processing unit connected with the receiving unit through a radio frequency cable, and a data processing system connected with the frequency spectrum processing unit through a network. The millimeter wave communication test system is formed by combining a millimeter wave frequency conversation module, a high-precision portable frequency spectrograph and a data processing system. The test system is designed completely according to site conditions; the receiving unit can realize scale regulation at a plurality of angles and high reception sensitivity; the frequency spectrograph can realize data acquisition treatment; and the data processing system completes analysis, display and storage according to site measurement requirements and realizes high-precision test through calibrating the system.
Description
Technical field
The present invention relates to a kind of microwave communication test macro, especially, relate to a kind of millimeter wave communication test system, the frequency spectrum, the field intensity that are used for millimetre-wave attenuator are tested.
Background technology
At moving communicating field, about the electromagnetic wave measurement aspect in the environment such as block, city many instruments are arranged, planning has quite ripe experience for ground base station, to solve the covering problem of mobile communication.
Radio system at railway and subway communication does not all use the millimere-wave band microwave, its main system comprises railway 400M general communication, the subway row are transferred the 800M trunking communication, the radio communication that the railway row are transferred 900M GSM-R, and subway is based on the Train Control CBTC system of communication and the wireless communication system in the Customer information PIS system, they are the radio lan 802.11a that are operated in the radio lan 802.11g of 2.4G or are operated in 5.8G, because frequency is lower, the measurement of field intensity is all directly finished with professional instrument.Magnetic-levitation train adopts millimetre-wave attenuator at present, but lacks the on-the-spot testing equipment of using.
Main at present network analyzer and the frequency spectrograph of using of the field strength measurement instrument of millimeter wave band, these instruments have higher precision, but because of the instrument heaviness, the condition of work harshness does not have matching used antenna The Cloud Terrace, needs the professional to operate, not according to the on-the-spot interface of using of traverse measurement exploitation or the like defective, can not satisfy on-the-spot millimeter wave test, the particularly millimeter wave of the communication system of bullet train test is mainly used in the laboratory and uses.
Communication common carrier has also been developed the millimetre-wave attenuator module both at home and abroad, owing to be used for communication, its gain is had relatively high expectations, and has automatic gain control, can not use as measuring equipment.
Summary of the invention
According to above present situation, the present invention is directed to the field strength measurement requirement of millimeter-wave communication system under the high-speed mobile, provide a kind of combining to constitute test macro by millimeter wave frequency-variable module, high-accuracy portable frequency spectrograph and data handling system, this test macro all designs according to field condition, receiving element can multi-angle band scale be regulated, the receiving sensitivity height, frequency spectrograph can be realized data acquisition process, data handling system requires to finish to analyze and show according to in-site measurement and storage realizes high precision measurement by the demarcation to system.
In order to achieve the above object, the invention provides a kind of millimeter wave communication test system, the frequency spectrum, the field intensity that are used for microwave communication are tested, and this communication test system comprises:
Receiving element;
The processing unit that is connected by the radio frequency cable frequency spectrum with receiving element;
The data handling system that is connected by network with the frequency spectrum processing unit.
Described receiving element comprises:
Receive the antenna of millimeter wave wireless signal, this antenna is arranged on the antenna The Cloud Terrace, described antenna The Cloud Terrace comprises two rotating platforms of placing by right angle frame, it can carry out level and luffing angle rotation to the antenna that is arranged on the rotating platform respectively, so that 360 ° manual rotation to be provided, and can provide accurately trickle angle adjustment by parts such as accurate thread or micrometer screw mandrels, make antenna can reach the purpose of comprehensive acquired signal;
And frequency-variable module, the signal that described antenna receives is input to frequency-variable module, after the local oscillation signal mixing and filtering by frequency-variable module and frequency-variable module inside, and the output intermediate-freuqncy signal.
Described frequency spectrum processing unit, promptly frequency spectrograph comprises field strength measuring module and spectrum measurement module; The intermediate-freuqncy signal of the output that the frequency spectrum processing unit is above-mentioned is input to frequency spectrograph and carries out frequency spectrum processing, measures field intensity, frequency spectrum.
Described data handling system comprises:
The field intensity analysis module that is connected by network with the field strength measuring module output;
The spectrum analysis module that is connected by network with spectrum measurement module output;
Reach data storage cell with field intensity analysis module, spectrum analysis module difference transmitted in both directions signal.
Further, described field intensity analysis module comprises image display module and data form display module, and this image display module and data form display module are connected with data storage cell respectively.
The present invention has designed the antenna The Cloud Terrace of adjustable angle of pitch and level angle rotation, has realized the geometry location of the front end of field strength measurement.Millimeter-wave signal receives through antenna, frequency-variable module down-conversion by receiving element, and send into frequency spectrograph, and data handling system communicates by network and frequency spectrograph, and this system can realize data record, storage, processing and the human-computer interaction function of frequency spectrum along the line and field strength distribution.
The present invention provides a kind of novel portable suitable on-the-spot equipment that uses for the field strength measurement of the millimeter-wave communication system under the high-speed mobile, be not only applicable to the millimeter wave test of magnetic floating traffic, also can be applied to the millimeter wave field strength measurement of other occasions, be a kind of novel test macro; Can be used for following occasion:
1. for layout in the base station in the magnetic floating traffic construction, base station power, antenna for base station, the isoparametric adjustment of car antenna provide measuring equipment;
2. for layout in the base station in the magnetic floating traffic operation maintenance, base station power, antenna for base station, the isoparametric adjustment of car antenna provide measuring equipment.
3. provide equipment for magnetic floating traffic radio communication Electromagnetic Interference Test.
Description of drawings
Accompanying drawing 1 is the structured flowchart of millimeter wave communication test system of the present invention.
Embodiment
Below in conjunction with drawings and Examples technical scheme of the present invention is described further.
As shown in Figure 1, millimeter wave communication test system of the present invention comprises:
Receiving element 1;
The frequency spectrum processing unit 2 that is connected by radio frequency cable with receiving element 1;
The data handling system 3 that is connected by network with frequency spectrum processing unit 2.
Described receiving element 1 comprises:
Receive the antenna of millimeter wave wireless signal, this antenna is arranged on the antenna The Cloud Terrace, described antenna The Cloud Terrace comprises two rotating platforms, described two rotating platforms are arranged on the right angle frame, it can carry out level and luffing angle rotation to the antenna that is arranged on the rotating platform respectively, 360 ° manual rotation is provided, and can carries out accurately trickle angle adjustment, make antenna can reach the purpose of comprehensive acquired signal by parts such as accurate thread or micrometer screw mandrels.
Described standard antenna has 3 kinds, and parameter is respectively:
Straight line base station pyramidal antenna: E face half-power width 4.60, gain 30dBi;
Bend base station pyramidal antenna: E face half-power width 200, gain 20dBi;
Vehicle-mounted pyramidal antenna: E face half-power width 300, gain 8dBi.
Frequency-variable module, the signal that described antenna receives is input to frequency-variable module, and promptly the mixing instrument after mixing instrument and the inner local oscillation signal mixing and filtering that produces of mixing instrument, is exported intermediate-freuqncy signal.
The parameter of the mixing instrument that adopts in the present embodiment is selected as follows:
Frequency range: 26.5～40GHz
Harmonic number: 8
Conversion loss: 28dB
Frequency conversion frequency response: ± 2.828dB
Noise level (RBW=1KHz) :-108
Local oscillation power scope: 12～18dBm
Described frequency spectrum processing unit 2, it is frequency spectrograph, comprise field strength measuring module 21 and spectrum measurement module 22, the above-mentioned intermediate-freuqncy signal of exporting from the frequency-variable module of receiving element 1 is input to frequency spectrograph and carries out frequency spectrum processing, and carries out field intensity, frequency spectrum data measurement by field strength measuring module 21 and spectrum measurement module 22 respectively.
Described data handling system 3 comprises field intensity analysis module 31 and spectrum analysis module 32, described field intensity analysis module 31 and spectrum analysis module 32 respectively with data storage cell 33 transmitted in both directions signals.
Described spectrum measurement module 22 is used for the measurement of spectrum intensity in the given range, the frequency spectrum data that this spectrum measurement module 22 measures, output to spectrum analysis module 32 by network, the frequency spectrum data of 32 pairs of inputs of this spectrum analysis module carries out analyzing and processing, this spectrum analysis module 32 can be provided with centre frequency, frequency span of measuring and the reference level that is used to show, these are provided with and can be saved in the data storage cell 33 in the corresponding database, and the historical data information of preserving before can from data storage cell 33, transferring as required, to realize the data record of frequency spectrum, storage, handle and human-computer interaction function.
Described field strength measuring module 21 is used for the measurement of given range internal magnetic field intensity, the field intensity data that this field strength measuring module 21 measures, output to field intensity analysis module 31 by network, the field intensity data of 31 pairs of inputs of this field intensity analysis module are carried out analyzing and processing, and described field intensity analysis module 31 comprises:
With the image display module that data storage cell 33 is connected by network, this image display module shows the measured value of given range internal magnetic field intensity with graphics mode, and this measured value is carried out analyzing and processing; This image display module can be provided with the frequency span of centre frequency, measurement, employed antenna gain system and measuring intervals of TIME, these are provided with and can be saved in the data storage cell 33 in the corresponding database, and the historical data information of preserving before can from data storage cell 33, transferring as required, to realize data record, storage, processing and the human-computer interaction function of field strength distribution.
With the data form display module that data storage cell 33 is connected by network, this data form display module shows the measured value of given range internal magnetic field intensity in the data form mode, and this measured value is carried out analyzing and processing; Equally, this data form display module can be provided with the frequency span of centre frequency, measurement, employed antenna gain system and measuring intervals of TIME, these are provided with and can be saved in the data storage cell 33 in the corresponding database, and the historical data information of preserving before can from data storage cell 33, transferring as required, to realize data record, storage, processing and the human-computer interaction function of field strength distribution.
The present invention is mainly used in the radio communications system signal testing of 38GHz car, realizes the functions such as data record, storage, processing and man-machine interaction of frequency spectrum along the line and field strength distribution.
After the 38GHz radio signal is received by the millimeter-wave planar reflector antenna, insert harmonic mixing instrument (local vibration source adopts 4.71GHz), pass through down-conversion, input signal is converted to the intermediate-freuqncy signal of 180M-1.32GHz, insert Anritsu spectrum measurement instrument MS2721B again and carry out the measurement and the analysis of frequency spectrum and field intensity, simultaneously, connect with frequency spectrograph with Ethernet (Ethernet) network mode by notebook computer.After finishing the demarcation of whole test system, just can adopt the network remote control mode to realize the functions such as data record, storage, processing and man-machine interaction of frequency spectrum and field strength distribution.
Concrete steps are as follows:
Step 1 fixes up an aerial wire, antenna The Cloud Terrace, mixing instrument and support triangle frame;
Step 2 is provided with the antenna level and the angle of pitch as requested;
Step 3 connects mixing instrument and frequency spectrograph 2 (frequency spectrum processing unit) with radio frequency cable;
Step 4, continuous measurement if desired connects frequency spectrograph 2 and data handling system 3 with netting twine;
Step 5 is for the mixing instrument in the receiving element 1 connects power supply;
Step 6, convenient as the scene, can be frequency spectrograph 2 and be connected power supply (otherwise frequency spectrograph 2 and the also available backup battery work of data handling system 3) with data handling system 3;
Step 7 is opened frequency spectrograph 2, adjusts the frequency range of test frequency to the specification regulation;
Step 8 is opened the mixing instrument in the receiving element 1, begins to measure.
Step 9, turn-on data treatment system 3 is provided with functions such as storage demonstration, monitor test.
Adopt millimeter wave communication test system of the present invention, after the millimeter wave wireless signal is received by antenna, after mixing instrument and local oscillation signal mixing and filtering, the output intermediate-freuqncy signal is sent into frequency spectrograph and is carried out field intensity, spectrum measurement, data handling system communicates by network and frequency spectrograph, realizes frequency spectrum along the line and field intensity data record, processing and human-computer interaction function.
Although content of the present invention has been done detailed introduction by above preferred embodiment, will be appreciated that above-mentioned description should not be considered to limitation of the present invention.After those skilled in the art have read foregoing, for multiple modification of the present invention with to substitute all will be conspicuous.Therefore, protection scope of the present invention should be limited to the appended claims.
Claims (6)
1. millimeter wave communication test system is characterized in that, this communication test system comprises:
Receiving element (1);
The frequency spectrum processing unit (2) that is connected by radio frequency cable with receiving element (1);
The data handling system (3) that is connected by network with frequency spectrum processing unit (2).
2. millimeter wave communication test system as claimed in claim 1 is characterized in that, described receiving element (1) comprises:
Receive the antenna of millimeter wave wireless signal, this antenna is arranged on the antenna The Cloud Terrace;
Frequency-variable module, the signal that described antenna receives is input to frequency-variable module, after frequency-variable module and local oscillation signal mixing and filtering, the output intermediate-freuqncy signal.
3. millimeter wave communication test system as claimed in claim 2 is characterized in that, described antenna The Cloud Terrace comprises two rotating platforms of placing by right angle frame, and it can carry out level and luffing angle rotation to antenna respectively, and 360 ° manual rotation is provided.
4. millimeter wave communication test system as claimed in claim 1 is characterized in that, described frequency spectrum processing unit (2) comprises field strength measuring module (21) and spectrum measurement module (22).
5. millimeter wave communication test system as claimed in claim 4 is characterized in that, described data handling system (3) comprises:
The field intensity analysis module (31) that is connected by network with field strength measuring module (21) output;
The spectrum analysis module (32) that is connected by network with spectrum measurement module (22) output;
Reach data storage cell (33) with field intensity analysis module (31), spectrum analysis module (32) difference transmitted in both directions signal.
6. millimeter wave communication test system as claimed in claim 5, it is characterized in that, described field intensity analysis module (31) comprises image display module and data form display module, and this image display module and data form display module are connected with data storage cell (33) respectively.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200850A CN101789831A (en) | 2009-12-25 | 2009-12-25 | Millimeter wave communication test system |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200910200850A CN101789831A (en) | 2009-12-25 | 2009-12-25 | Millimeter wave communication test system |
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| CN101789831A true CN101789831A (en) | 2010-07-28 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075265A (en) * | 2010-12-28 | 2011-05-25 | 上海大学 | Extremely high-frequency microwave communication test system |
| CN102075261A (en) * | 2010-11-18 | 2011-05-25 | 四川九洲电器集团有限责任公司 | Method and system for automatically testing millimeter-wave front end |
| CN104635217A (en) * | 2015-02-15 | 2015-05-20 | 南京理工大学 | Echo-free isolation box for testing of millimeter wave alternating current radiometer |
| CN105553579A (en) * | 2015-11-30 | 2016-05-04 | 电子科技大学 | High-precision test holder system for millimeter wave channel test |
| CN105676020A (en) * | 2015-12-31 | 2016-06-15 | 陕西海泰电子有限责任公司 | System-level radiation safety margin test system and method |
| WO2019019399A1 (en) * | 2017-07-25 | 2019-01-31 | 深圳市大疆创新科技有限公司 | Aircraft, ground station, and radio frequency detection system |
| CN111682906A (en) * | 2019-02-25 | 2020-09-18 | Oppo广东移动通信有限公司 | Test device and electronic apparatus |
| CN113092881A (en) * | 2021-03-24 | 2021-07-09 | 北京卓越信通电子股份有限公司 | Equipment for detecting physical characteristics of highway RSU antenna |
-
2009
- 2009-12-25 CN CN200910200850A patent/CN101789831A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102075261A (en) * | 2010-11-18 | 2011-05-25 | 四川九洲电器集团有限责任公司 | Method and system for automatically testing millimeter-wave front end |
| CN102075265A (en) * | 2010-12-28 | 2011-05-25 | 上海大学 | Extremely high-frequency microwave communication test system |
| CN104635217A (en) * | 2015-02-15 | 2015-05-20 | 南京理工大学 | Echo-free isolation box for testing of millimeter wave alternating current radiometer |
| CN105553579A (en) * | 2015-11-30 | 2016-05-04 | 电子科技大学 | High-precision test holder system for millimeter wave channel test |
| CN105676020A (en) * | 2015-12-31 | 2016-06-15 | 陕西海泰电子有限责任公司 | System-level radiation safety margin test system and method |
| WO2019019399A1 (en) * | 2017-07-25 | 2019-01-31 | 深圳市大疆创新科技有限公司 | Aircraft, ground station, and radio frequency detection system |
| CN109982929A (en) * | 2017-07-25 | 2019-07-05 | 深圳市大疆创新科技有限公司 | Aircraft, earth station and RF detection system |
| CN111682906A (en) * | 2019-02-25 | 2020-09-18 | Oppo广东移动通信有限公司 | Test device and electronic apparatus |
| CN111682906B (en) * | 2019-02-25 | 2022-05-13 | Oppo广东移动通信有限公司 | Test device and electronic apparatus |
| CN113092881A (en) * | 2021-03-24 | 2021-07-09 | 北京卓越信通电子股份有限公司 | Equipment for detecting physical characteristics of highway RSU antenna |
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Application publication date: 20100728 |