CN206193108U - Detection apparatus for line plate structure radiated emission intensity - Google Patents
Detection apparatus for line plate structure radiated emission intensity Download PDFInfo
- Publication number
- CN206193108U CN206193108U CN201621271187.XU CN201621271187U CN206193108U CN 206193108 U CN206193108 U CN 206193108U CN 201621271187 U CN201621271187 U CN 201621271187U CN 206193108 U CN206193108 U CN 206193108U
- Authority
- CN
- China
- Prior art keywords
- cable
- line
- hardened structure
- port
- radiation
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Monitoring And Testing Of Transmission In General (AREA)
Abstract
The utility model discloses a detection apparatus for line plate structure radiated emission intensity, including setting up test table (4) in semi -anechoic chamber (3), the tiling is gone up to test table (4) has metal sheet (6), test table (4) top level is provided with single cable (7), the top port and network analyzer's (8) the port no. 1 of cable (7) are connected, the terminal prot of cable (7) through shorting stub (9) with metal sheet (6) link to each other, the line plate structure is constituteed in cable (7) and metal sheet (6), and receive biconical antenna (10) the radiation of line plate structure, the output port direct output transmission coefficient inclusive AND of biconical antenna (10) the port no. 2 of network analyzer (8) is connected. The utility model provides a pair of detection apparatus for line plate structure radiated emission intensity, device simple structure, the true accuracy of measuring result.
Description
Technical field
The utility model is related to a kind of detection means of the hardened structure radiation-emitting intensity of line, belongs to electromagnetic compatibility technology neck
Domain.
Background technology
Among conventional electromagnetic compatibility detection at present and EMC Design, the hardened structure of line is largely present wherein.For example
Often it is related to the hardened structure of line in all kinds of detections of the MIL-STD461F on Devices to test.And this kind of structure is electronic equipment low
Frequency range（30MHz-200MHz）One of exceeded principal element of electromagnetic radiation.Therefore the radiation-emitting intensity of the hardened structure of line can be to whole
The electromagnetic radiation performance of system produces potential influence, even results in the exceeded situation of system radiation-emitting intensity, therefore, to line
The research and analysis of hardened structure radiation-emitting intensity are very important.
Among common electronic equipment and EMC Design, line plate radiator structure is often met.In order to line plate
The radiation-emitting intensity of structural radiation body is analyzed.It is one for the common method of testing of the hardened structure radiation-emitting intensity of line
Under the driving of fixed power signal, the electromagnetic radiation that it gives off is measured using the reception antenna of the hardened structure of range line strong
Degree.But, the measurement of the method is related to numerous test equipment such as EMI receivers, test result receive environmental factor and
The influence of test equipment, is easy to produce error.
Utility model content
Technical problem to be solved in the utility model is to provide a kind of detection dress of the hardened structure radiation-emitting intensity of line
Put, the apparatus structure is simple, measurement result true and accurate.
In order to solve the above technical problems, the technical solution adopted in the utility model is：
A kind of detection means of the hardened structure radiation-emitting intensity of line, including the test desk in semi-anechoic chamber is arranged at, institute
Stating on test desk tiling has a metallic plate, and the test desk upper horizontal is provided with single cable, the top port of the cable with
The port one of Network Analyzer is connected, and the terminal prot of the cable is connected by shorting stub with the metallic plate；The cable
The hardened structure of line is constituted with metallic plate, biconical antenna receives the radiation of the hardened structure of line, and the output port of the biconical antenna is straight
Connect output transmission coefficient or be connected with the port two of the Network Analyzer.
The hardened structure of line is with ground by some grounding coppers.
The top port of the cable and the output port of the biconical antenna pass through coaxial line and the network analysis
Instrument is connected.
Absorbing material is provided with the wall of the semi-anechoic chamber.
The hardened structure of line is the hardened structure of single line line.
The cable using the m of length 1.3 copper cash, the Cable radius R be 1.32mm, cable top port and
The discrete ports of 50 Ω are added between metallic plate；The shorting stub is to be vertically arranged and is highly 5cm；In the vertical of the cable
Bisector, the bipyramid is placed with cable level at a distance of 1m and at the position of the m of semi-anechoic chamber Metal ground 1.2
Antenna.
The Network Analyzer is Agilent portable network analyzers.
Cable top port is connected by standard sub-miniature A connector with port one.
A kind of determination method of the hardened structure radiation-emitting intensity of line, comprises the following steps：
S01, using adding drive of the discrete ports of 50 Ω as the hardened structure of line between cable top port and metallic plate
Dynamic signal port, full-wave simulation model is set up and using the port record all-wave of the discrete ports of 50 Ω and biconical antenna with CST
The Electromagnetic Simulation result of simulation model, the Electromagnetic Simulation result is transmission coefficient one, now, the output end of the biconical antenna
Mouth directly exports transmission coefficient one；
S02, using Network Analyzer as the hardened structure of line drive signal, by the hardened structure spoke of Network Analyzer call wire
The actual test result of transmitting is penetrated, the actual test result is transmission coefficient two, now, top port and the network point of cable
The port one of analyzer connects, and the output port of the biconical antenna is connected with the port two of the Network Analyzer；
S03, comparative analysis transmission coefficient one and transmission coefficient two, such as difference less, illustrate that Electromagnetic Simulation result is true
It is real accurate.
The detection means of the hardened structure radiation-emitting intensity of a kind of line that the utility model is provided, primarily to solving different
The problem of the radiation-emitting intensive analysis of the hardened structure of line under parameter.It is final to investigate cable actuated port（That is top port）With it is double
The size of the transmission coefficient between cone antenna output end mouthful, emulation and test are analyzed, and make the hardened structure spoke of line for measuring
The test result true and accurate of emissive porwer is penetrated, error is small.
Brief description of the drawings
Fig. 1 is structural representation of the present utility model；
Fig. 2 is the top view of Fig. 1；
Fig. 3 is the schematic diagram of biconical antenna and cable relative position in the utility model；
Fig. 4 be the utility model in biconical antenna be in different polarized states under S21Test and simulation result figure；
Fig. 5 is the simulation result pair of the cable that the hardened structure of the utility model center line uses different length under identical arrangement
Than figure；
Fig. 6 be the utility model in cable be in different height under S21Test and simulation result figure.
Specific embodiment
The utility model is further described below in conjunction with the accompanying drawings.
As shown in Fig. 1 ~ Fig. 3, a kind of detection means of the hardened structure radiation-emitting intensity of line, including it is arranged at semi-anechoic chamber
Test desk 4 in 3, tiling has metallic plate 6 on the test desk 4, and the upper horizontal of the test desk 4 is provided with single cable 7, institute
State the top port of cable 7 to be connected with the port one of Network Analyzer 8, the terminal prot of the cable 7 passes through shorting stub 9 and institute
Metallic plate 6 is stated to be connected；The cable 7 and the composition hardened structure of line of metallic plate 6, biconical antenna 10 receive the spoke of the hardened structure of the line
Penetrate, the output port of the biconical antenna 10 directly exports transmission coefficient or is connected with the port two of the Network Analyzer 8.
The hardened structure of line is grounded by some grounding coppers band 11.
The top port of the cable 7 and the output port of the biconical antenna 10 pass through coaxial line 12 and the network
Analyzer 8 is connected.
Absorbing material 5 is provided with the wall of the semi-anechoic chamber 3.
The hardened structure of line is the hardened structure of single line line.
The deficiency of the hardened structure radiation-emitting intensive analysis of line constituted to cable 7 and metallic plate 6 for conventional method, this reality
Emulated and test analysis using simple two-port network with new.The arrangement of whole simulation model 1 and actual test module 2
According to the requirement of MIL-STD-461F.
Simulation model 1 and actual test module 2 may be contained within semi-anechoic chamber 3.
Actual test module 2 includes test desk 4, and tiling has metallic plate 6, the top water of the test desk 4 on the test desk 4
Flat to be provided with single cable 7, the top port of the cable 7 is connected with the port one of Network Analyzer 8, the end of the cable 7
End port is connected by shorting stub 9 with the metallic plate 6, the hardened structure spoke of line for receiving the cable 7 and the composition of metallic plate 6
The output port of the biconical antenna 10 penetrated is connected with the port two of the Network Analyzer 8.
Simulation model 1 includes all parts of actual test module 2, but do not need the output port of the biconical antenna 10 with
The port two of the Network Analyzer 8 connects, but the output port for replacing with the biconical antenna 10 directly exports transmission system
Number.
A kind of detection means of the hardened structure radiation-emitting intensity of line that the utility model is provided, apparatus structure is simple, measurement
Real result is accurate.
Cable 7 uses the m copper lines of length 1.3, and 50 Ω discrete ends are added between the top port of cable 7 and metallic plate 6
Mouthful, the terminal prot of cable 7 is connected by shorting stub 9 with metallic plate 6.Additionally in the perpendicular bisector of cable 7, with cable 7
Level places biconical antenna 10 at the position of the 1m and m of 3 Metal ground of semi-anechoic chamber 1.2, for receiving the hardened structure spoke of line
The radiation-emitting intensity of beam.The radius R of the cable 7 is 1.32mm；The shorting stub 9 is to be vertically arranged and is highly 5cm.Adopt
The drive signal of the hardened structure of line constituted as cable 7 and metallic plate 6 with Agilent portable networks analyzer, biconical antenna
The radiation-emitting signal that the hardened structure of line of 10 receiving cables 7 and the composition of metallic plate 6 is produced.Cable 7 in above-mentioned whole device structure
Length, cable 7 all can be change apart from the height of metallic plate 6.Final cable 7 of investigating drives port and biconical antenna 10
Transmission coefficient S between output port21Size.
Emulation and test comparison analysis result are as shown in Fig. 4 ~ Fig. 6.
The Network Analyzer 8 is Agilent portable network analyzers.
The top port of the cable 7 is connected by standard sub-miniature A connector with port one.
A kind of determination method of the hardened structure radiation-emitting intensity of line, this analysis method is using Electromagnetic Simulation and actual survey
The method for trying comparative analysis.Electromagnetic Simulation sets up full-wave simulation model with CST, and the foundation of model is according to MIL-STD461F's
It is required that carry out, as shown in Fig. 1 ~ Fig. 3.For the accuracy and authenticity of verifying electromagnetic emulation, further using experiment test（I.e.
Actual test）Method, part of detecting include electromagnetic compatible dark chamber（That is semi-anechoic chamber 3）, vector network analyzer（That is network
Analyzer 8）, coaxial line 12 etc..The arrangement of same actual test in strict accordance with MIL-STD461F requirement, such as Fig. 1 ~ Fig. 3 institutes
Show.Finally Electromagnetic Simulation result and actual test result are contrasted, by analyzing the result under different conditions, is finally drawn
The conclusion of the hardened structure radiation-emitting intensity of line.
It is radiant body that experiment uses the hardened structure of single line line, if the radius of cable 7 is R, the surface metal plate 6 of distance test table 4
Distance be H, apart from table side Edge Distance be L, biconical antenna 10 apart from cable 7 distance be D.It is portable using Agilent
The drive signal of the hardened structure of line that Network Analyzer is constituted as cable 7 and metallic plate 6, the top port of cable 7 passes through standard SMA
Joint is connected with the port one of Network Analyzer 8, for the preferably hardened structure radiation-emitting intensity of research and analysis line, its tag wire
Cable 7 is directly connected with metallic plate 6, and now the terminal of cable 7 is in short-circuit condition.The port two of Network Analyzer 8 be located at cable
The output port of biconical antenna 10 of the m distant places of front 1 is connected.The intensity of final emulation and the hardened structure radiation-emitting of p-wire is led to
Cross S of the source driving signal to reception antenna output end in above-mentioned two-port network21To characterize.
As shown in figure 4, no matter biconical antenna 10 connects the radiant body of wire rewinding board 6 in vertical polarization or horizontal polarization state
, there is obvious resonance phenomena in 115 MHz in radiation-emitting.The hardened structure of line that cable 7 and metallic plate 6 are constituted is found through analysis
The length of cable 7 is 1.3 m in radiant body, and respective frequencies f is 230 MHz, and resonant frequency is about f/2.It can be seen that the length of cable 7
Influence S21The resonant frequency of curve.
As shown in figure 5, cable 7 and metallic plate 6 composition the hardened structure radiant body of line in cable 7 effect length resonance frequently
Rate, when 2 m of maximum length is required during the length of cable 7 rises to MIL-STD461F by 1.3 m, S21Maximum correspondence frequency
75MHz is moved to from 115 MHz, it is seen that the resonance of the hardened structure of line of cable 7 and the composition of metallic plate 6 under certain power signal is frequently
Rate has direct relation with the length of cable.
Simultaneously in Fig. 4 emulation and test result show wire rope 7 apart from metallic plate 6 it is contour in the case of, 80MHz-
The hardened structure radiant body of line of 150MHz frequency ranges cable 7 and the composition of metallic plate 6 is in reception antenna（That is biconical antenna 10）Place
Radiation-emitting intensity is higher than horizontal direction in vertical direction, it is seen that this frequency range（That is 80MHz-150MHz）Interior vertical polarization radiation hair
Penetrate and account for leading role in whole system radiation-emitting.
As shown in fig. 6, emulation and test show that cable 7 increases 5cm, cable 7 and metallic plate 6 apart from the height H of metallic plate 6
Radiation-emitting intensity of the hardened structure of line of composition at reception antenna increases 3-5dB.
The circuit current intensity flowed in free space intermediate ring road area is for the loop of S is I, and frequency is the signal of F, away from
For radiation intensity produced away from D is with a distance from loop.When cable 7 and metallic plate 6 are smaller apart from H, the electric current on cable 7
It is small with the current path loop area S that the loop current on metallic plate 6 is formed so that contribution amount very little of the loop current to radiation.
But with the increase of the placing height H of cable 7, it is meant that the earth terminal of cable 7 is elongated, current path loop area S becomes big therewith, therefore electric
Flow the contribution amount to radiating also mutually to strain greatly, ultimately result in the radiation-emitting of the hardened structure of line of whole cable 7 and the composition of metallic plate 6
Intensity becomes big.
The above is only preferred embodiment of the present utility model, it should be pointed out that：For the common skill of the art
For art personnel, on the premise of the utility model principle is not departed from, some improvements and modifications can also be made, these improve and
Retouching also should be regarded as protection domain of the present utility model.
Claims (8)
1. the detection means of the hardened structure radiation-emitting intensity of a kind of line, it is characterised in that including being arranged at semi-anechoic chamber（3）It is interior
Test desk（4）, the test desk（4）Upper tiling has metallic plate（6）, the test desk（4）Upper horizontal is provided with solid wire
Cable（7）, the cable（7）Top port and Network Analyzer（8）Port one connect, the cable（7）Terminal prot
By shorting stub（9）With the metallic plate（6）It is connected；The cable（7）And metallic plate（6）The composition hardened structure of line, biconical antenna
（10）Receive the radiation of the hardened structure of the line, the biconical antenna（10）Output port directly export transmission coefficient or with it is described
Network Analyzer（8）Port two connect.
2. the detection means of the hardened structure radiation-emitting intensity of a kind of line according to claim 1, it is characterised in that：The line
Hardened structure passes through some grounding copper bands（11）Ground connection.
3. the detection means of the hardened structure radiation-emitting intensity of a kind of line according to claim 1, it is characterised in that：The line
Cable（7）Top port and the biconical antenna（10）Output port pass through coaxial line（12）With the Network Analyzer
（8）It is connected.
4. the detection means of the hardened structure radiation-emitting intensity of a kind of line according to claim 1, it is characterised in that：Described half
Anechoic chamber,（3）Wall on be provided with absorbing material（5）.
5. the detection means of the hardened structure radiation-emitting intensity of a kind of line according to claim 1, it is characterised in that：The line
Hardened structure is the hardened structure of single line line.
6. the detection means of the hardened structure radiation-emitting intensity of a kind of line according to claim 1, it is characterised in that：The line
Cable（7）Using the copper cash of the m of length 1.3, the cable（7）Radius R is 1.32mm, the cable（7）Top port and metallic plate
（6）Between add the discrete ports of 50 Ω；The shorting stub（9）To be vertically arranged and being highly 5cm；In the cable（7）Hang down
Straight bisector, with cable（7）Level is at a distance of 1m and apart from the semi-anechoic chamber（3）Placed at the position of the m of Metal ground 1.2
The biconical antenna（10）.
7. the detection means of the hardened structure radiation-emitting intensity of a kind of line according to claim 1, it is characterised in that：The net
Network analyzer（8）It is Agilent portable network analyzers.
8. the detection means of the hardened structure radiation-emitting intensity of a kind of line according to claim 1, it is characterised in that：The line
Cable（7）Top port is connected by standard sub-miniature A connector with port one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271187.XU CN206193108U (en) | 2016-11-24 | 2016-11-24 | Detection apparatus for line plate structure radiated emission intensity |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201621271187.XU CN206193108U (en) | 2016-11-24 | 2016-11-24 | Detection apparatus for line plate structure radiated emission intensity |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN206193108U true CN206193108U (en) | 2017-05-24 |
Family
ID=58724874
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201621271187.XU Expired - Fee Related CN206193108U (en) | 2016-11-24 | 2016-11-24 | Detection apparatus for line plate structure radiated emission intensity |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN206193108U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483388A (en) * | 2016-11-24 | 2017-03-08 | 南京信息工程大学 | A kind of detection means of the hardened structure radiation-emitting intensity of line and determination method |
| CN109254207A (en) * | 2018-06-27 | 2019-01-22 | 郑州云海信息技术有限公司 | A kind of cable electromagnetic radiation analysis method and system |
-
2016
- 2016-11-24 CN CN201621271187.XU patent/CN206193108U/en not_active Expired - Fee Related
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106483388A (en) * | 2016-11-24 | 2017-03-08 | 南京信息工程大学 | A kind of detection means of the hardened structure radiation-emitting intensity of line and determination method |
| CN109254207A (en) * | 2018-06-27 | 2019-01-22 | 郑州云海信息技术有限公司 | A kind of cable electromagnetic radiation analysis method and system |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| US8392134B2 (en) | Antenna testing device and antenna testing method using the same | |
| CN104849570B (en) | A kind of material electromagnetic parameter test method based on artificial magnetic conductor rectangular waveguide | |
| US10116398B2 (en) | System for testing efficacy of electromagnetic shielding and method | |
| CN202837416U (en) | System for testing shielding performance of cables | |
| CN103543342A (en) | Method and system for testing shielding performance of cable | |
| CN105467235A (en) | Method and device used for testing interference of electromagnetic radiation on cable | |
| JPH07501911A (en) | Wideband antenna and electromagnetic field simulator | |
| CN206193108U (en) | Detection apparatus for line plate structure radiated emission intensity | |
| CN103913661B (en) | Method for estimating influences on telecommunication cable E1 wire by electromagnetic disturbance | |
| CN106483388A (en) | A kind of detection means of the hardened structure radiation-emitting intensity of line and determination method | |
| CN106018491B (en) | Field sensitive type Spark gap material performance test method | |
| CN109781831A (en) | A method of measurement soft magnetic film high frequency magnetic conductivity | |
| CN109782100A (en) | A kind of test device and test method for the pincers calibration of automotive electronics capacitive coupling | |
| CN207516465U (en) | A kind of simulating, verifying test device of shielded cable | |
| EP1995599A1 (en) | Method for determining an antenna parameter | |
| CN101738558A (en) | Method for testing radiation electromagnetic interference noise by using GTEM chamber | |
| CN109142888A (en) | A kind of satellite electromagnetic leakage localization method and system | |
| CN104777381B (en) | A kind of Electromagnetic Interference Test method and system of double antenna | |
| CN207541175U (en) | A kind of testing jig and shield effectiveness test system | |
| CN107782746A (en) | Material reflectance test system based on vector network analysis | |
| CN207528839U (en) | Shielding properties tests system | |
| Iwasaki et al. | Systematic uncertainties of the complex antenna factor of a dipole antenna as determined by two methods | |
| CN206945852U (en) | Microwave monolithic circuit immunity to interference test fixture | |
| CN110456189A (en) | Near field shield effectiveness test device, system and method | |
| KR101769238B1 (en) | Method and Apparatus for Evaluating EMC in Special Power Distribution Zone on Ship |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20170524 Termination date: 20181124 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |