CN102955073B - The insertion loss test method of filtering shielding integral component - Google Patents
The insertion loss test method of filtering shielding integral component Download PDFInfo
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- CN102955073B CN102955073B CN201210412628.3A CN201210412628A CN102955073B CN 102955073 B CN102955073 B CN 102955073B CN 201210412628 A CN201210412628 A CN 201210412628A CN 102955073 B CN102955073 B CN 102955073B
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- insertion loss
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Abstract
The present invention relates to Electronic Testings and Analysis of Test Technology for Insertion Loss field, are the insertion loss test methods of filtering shielding integral component.The insertion loss test method of filtering shielding integral component, its equipment includes at least special pinboard, test clip, signal source, frequency spectrograph, coaxial cable and screened room, the mask of special pinboard and screened room overlap joint is fixed, and installs wire mesh pad additional in lap-joint；Signal source is arranged outside screened room, and frequency spectrograph is arranged in screened room, and signal source is connected coaxial cable with frequency spectrograph, and coaxial cable passes through special pinboard and mask；Screened room individually connects the earth；And according to survey lead directly to value, survey the filtering of each frequency point after reception value and calculate three steps progress of insertion loss.This method subtracts reception value after the filtering of each frequency point by using straight-through value, obtains the insertion loss of filtering shielding integral component, and precision is high, versatility is good.
Description
Technical field
The present invention relates to Electronic Testings and Analysis of Test Technology for Insertion Loss field, are the insertion damages of filtering shielding integral component
Consume test method.
Background technology
In recent years, in field of electromagnetic compatibility, the electromagnetism interference performance of product is required increasingly to increase, this makes product
Electromagnetic interference rejection ability require also more stringent, and determine its anti-electromagnetic interference capability and be often depending on equipment line cable outside
Filter capacity and shield effectiveness to cavity, so, shielding is melted with filtering and shields integral component for the filtering of the whole body
Very excellent performance characteristics have been shown, there are very extensive market prospects.But how to verify a filtering shielding one
The insertion loss of body component, there are no the tests of complete set, therefore there is an urgent need to a kind of filtering shielding integral components
Insertion loss test method filters the insertion loss of shielding integral component to verify.
Invention content
The object of the present invention is to provide a kind of insertion loss test methods of filtering shielding integral component, are suitable for any
Filtering on panel, interface, isolated chambers end face shields integral component.
The technical scheme is that the insertion loss test method of filtering shielding integral component, its equipment are at least wrapped
Include special pinboard, test clip, signal source, frequency spectrograph, coaxial cable and screened room, the mask of special pinboard and screened room is taken
Fixation is connect, and wire mesh pad is installed additional in lap-joint；Signal source is arranged outside screened room, and frequency spectrograph is arranged in screened room,
Signal source is connected coaxial cable with frequency spectrograph, and coaxial cable passes through special pinboard and mask；Screened room individually connects the earth；
The insertion loss test method of this filtering shielding integral component is carried out according to following step：
Step 1, straight-through value is surveyed；Signal source emits signal, and signal is transmitted by coaxial cable, directly by screened room wall
Adaptor connector carry out straight-through test, i.e., in the case of between signal source and frequency spectrograph without filtering, value that frequency spectrograph measures
For straight-through value；
Step 2, reception value after the filtering of each frequency point is surveyed；Filtering shielding integral component is fixedly mounted on special pinboard
On, lap-joint chooses whether to install conductive gasket additional according to actual conditions, and coaxial cable is connected with filtering shielding integral component；It surveys
The core wire sandwiched of examination folder is set in screened room, and clamps the return lead of coaxial cable, and the extraction sandwiched of test clip, which is set, to be shielded
Outdoor, and clamp the PE ground terminals of filtering shielding integral component；It is tested after setting, signal source emits signal, and signal passes
After passing filtered shielding integral component, frequency spectrograph is reached, frequency spectrograph measures the filtered shielding integral component of each frequency point
Reception value afterwards；
Step 3, insertion loss is calculated；It is subtracted after step 2 obtains the filtering of each frequency point and is received with the straight-through value that step 1 obtains
Value obtains the insertion loss of filtering shielding integral component.
The special pinboard is the pinboard made with filtering shielding integral component according to the mask of screened room.
The test clip includes core wire folder and draws folder, it is using N-type radio frequency connector as pedestal, from centre bore and outside
After skin lead-out wire, lead other end welding metal clipping at.
The signal source is function signal generator, modulation signal generator or broadband signal source.
The frequency spectrograph is the standard device for meeting 9KHZ to 40GHZ test frequency ranges.
The coaxial cable is the coaxial cable for meeting 9KHZ to 40GHZ test frequency ranges.
The screened room is electrical measurement screened room, shielded anechoic chamber or semi-anechoic chamber.
It is characteristic of the invention that subtracting reception value after the filtering of each frequency point by using straight-through value, filtering shielding one is obtained
Change the insertion loss of component, this method precision is high, versatility is good.
Description of the drawings
Below in conjunction with embodiment, the present invention is further illustrated.
Fig. 1 is the knot of the insertion loss test method of filtering shielding integral component when shielding integral component without filtering
Structure schematic diagram.
Fig. 2 is the knot of the insertion loss test method of filtering shielding integral component when having filtering shielding integral component
Structure schematic diagram.
Fig. 3 is test clip structural schematic diagram.
In figure：1, special pinboard；2, test clip；3, signal source；4, frequency spectrograph；5, coaxial cable；6, screened room；7, it filters
Wave screen covers integral component；8, mask.
Specific implementation mode
Embodiment 1
The insertion loss test method of filtering shielding integral component, its equipment include at least special pinboard 1, test
Folder 2, signal source 3, frequency spectrograph 4, coaxial cable 5 and screened room 6, special pinboard 1 and the overlap joint of mask 8 of screened room 6 are fixed, and
Wire mesh pad is installed additional in lap-joint；Signal source 3 is arranged outside screened room 6, and frequency spectrograph 4 is arranged in screened room 6, coaxial line
Signal source 3 and frequency spectrograph 4 are connected cable 5, and coaxial cable 5 passes through special pinboard 1 and mask 8；Screened room 6 individually connects big
Ground.
Embodiment 2
The insertion loss test method of filtering shielding integral component, its equipment include at least special pinboard 1, test
Folder 2, signal source 3, frequency spectrograph 4, coaxial cable 5 and screened room 6.
As shown in Figure 1, screened room 6 is electrical measurement screened room, shielded anechoic chamber or semi-anechoic chamber, screened room 6 individually connects the earth.
The setting of screened room 6 is for completely isolated input, output signal, so as to get test result it is true.
Special pinboard 1 is the pinboard made with filtering shielding integral component 7 according to the mask 8 of screened room 6, special
Pinboard 1 and the overlap joint of mask 8 of screened room 6 are fixed, and install wire mesh pad additional in lap-joint.It is effective by this connection type
Filtering is shielded integral component and screened room by ground（6）It forms a whole, completes insertion loss test.
Signal source 3 is function signal generator, modulation signal generator or broadband signal source, is arranged outside screened room 6.
Frequency spectrograph 4 is the standard device for meeting 9KHZ to 40GHZ test frequency ranges, is arranged in screened room 6.
Coaxial cable 5 passes through special pinboard 1, and the signal source 3 of 6 medial and lateral of screened room is connected with frequency spectrograph 4.Coaxially
Cable is using the low-loss coax cables for meeting 9KHZ to 40GHZ test frequency ranges.
After setting above each component, the test of insertion loss, the insertion damage of this filtering shielding integral component are carried out
Test method is consumed to carry out according to following step：
Step 1, straight-through value is surveyed；Signal source 3 emits signal, and signal is transmitted by coaxial cable 5, directly passes through 6 wall of screened room
Adaptor connector on wall carries out straight-through test, i.e., in the case of between signal source 3 and frequency spectrograph 4 without filtering, frequency spectrograph 4 is surveyed
The value obtained is straight-through value.
Step 2, as shown in Fig. 2, surveying reception value after the filtering of each frequency point；Filtering shielding integral component 7 is fixedly mounted
On special pinboard 1, lap-joint chooses whether to install conductive gasket, coaxial cable 5 and filtering shielding one additional according to actual conditions
Body component 7 is connected；The core wire sandwiched of test clip 2 is set in screened room 6, and clamps the return lead of coaxial cable 5, test clip
2 extraction sandwiched is set outside screened room 6, and clamps the PE ground terminals of filtering shielding integral component 7；It is tested after setting,
Signal source 3 emits signal and reaches frequency spectrograph 4, frequency spectrograph 4 measures each frequency after signal passes through filtering shielding integral component 7
Reception value after the filtered shielding integral component 7 of point.
As shown in figure 3, test clip 2, which includes core wire, presss from both sides and draw folder, it is using N-type radio frequency connector as pedestal, from center
Behind hole and crust lead-out wire, lead other end welding metal clipping at.
Step 3, insertion loss is calculated；It is subtracted after step 2 obtains the filtering of each frequency point and is received with the straight-through value that step 1 obtains
Value obtains the insertion loss of filtering shielding integral component 7.
The insertion loss test method of this filtering shielding integral component subtracts the filter of each frequency point by using straight-through value
Reception value after wave obtains the insertion loss of filtering shielding integral component 7, and this method precision is high, versatility is good.
The well-known components and common structure of the component and the structure category industry that the present embodiment does not describe in detail or common hand
Section, does not describe one by one here.
Claims (1)
1. the insertion loss test method of filtering shielding integral component, its equipment include at least special pinboard（1）, test
Folder（2）, signal source（3）, frequency spectrograph（4）, coaxial cable（5）And screened room（6）, special pinboard（1）With screened room（6）Illiteracy
Plate（8）Overlap joint is fixed, and installs wire mesh pad additional in lap-joint；Signal source（3）It is arranged in screened room（6）Outside, frequency spectrograph（4）
It is arranged in screened room（6）It is interior, coaxial cable（5）By signal source（3）With frequency spectrograph（4）Conducting, and coaxial cable（5）Across special
Pinboard（1）With mask（8）；Screened room（6）Individually connect the earth；The insertion loss test side of this filtering shielding integral component
Method is carried out according to following step：
Step 1, straight-through value is surveyed；Signal source（3）Emit signal, signal is by coaxial cable（5）It transmits, directly passes through screened room（6）
Adaptor connector on wall carries out straight-through test, i.e., in signal source（3）With frequency spectrograph（4）Between without filtering in the case of, frequency
Spectrometer（4）The value measured is straight-through value；
Step 2, reception value after the filtering of each frequency point is surveyed；Filtering is shielded into integral component（7）It is fixedly mounted on special pinboard
（1）On, lap-joint chooses whether to install conductive gasket, coaxial cable additional according to actual conditions（5）Integral component is shielded with filtering
（7）Conducting；Test clip（2）Core wire sandwiched set in screened room（6）It is interior, and clamp coaxial cable（5）Return lead, test clip
（2）Extraction sandwiched set in screened room（6）Outside, and filtering shielding integral component is clamped（7）PE ground terminals；It sets laggard
Row test, signal source（3）Emit signal, signal passes through filtering shielding integral component（7）Afterwards, frequency spectrograph is reached（4）, frequency
Spectrometer（4）Measure the filtered shielding integral component of each frequency point（7）Reception value afterwards；
Step 3, insertion loss is calculated；It is subtracted after step 2 obtains the filtering of each frequency point and is received with the straight-through value that step 1 obtains
Value obtains filtering shielding integral component（7）Insertion loss；
The special pinboard（1）It is according to screened room（6）Mask（8）Integral component is shielded with filtering（7）It makes
Pinboard；
The test clip（2）Folder is pressed from both sides and drawn including core wire, it is using N types radio frequency connector as pedestal, from centre bore and outside
After skin lead-out wire, lead other end welding metal clipping at；
The signal source（3）It is function signal generator, modulation signal generator or broadband signal source；
The frequency spectrograph（4）It is the standard device for meeting 9KHZ to 40GHZ test frequency ranges；
The coaxial cable（5）It is the coaxial cable for meeting 9KHZ to 40GHZ test frequency ranges；
The screened room（6）It is electrical measurement screened room, shielded anechoic chamber or semi-anechoic chamber.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201210412628.3A CN102955073B (en) | 2012-10-25 | 2012-10-25 | The insertion loss test method of filtering shielding integral component |
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| CN201210412628.3A CN102955073B (en) | 2012-10-25 | 2012-10-25 | The insertion loss test method of filtering shielding integral component |
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| CN102955073A CN102955073A (en) | 2013-03-06 |
| CN102955073B true CN102955073B (en) | 2018-08-17 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105510722A (en) * | 2015-12-09 | 2016-04-20 | 上海精密计量测试研究所 | Flat absorbing material insertion loss measurement apparatus and measurement method |
| CN110531167A (en) * | 2019-09-16 | 2019-12-03 | 西安兆格电子信息技术有限公司 | A kind of cable pathways Insertion Loss measuring device and measurement method |
| CN110596501A (en) * | 2019-10-17 | 2019-12-20 | 中国人民解放军军事科学院国防工程研究院 | Performance test system of power filter under simulated actual working state |
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| CN101852829A (en) * | 2009-12-30 | 2010-10-06 | 西安开容电子技术有限责任公司 | Insertion loss testing device for lead type filter and design method thereof |
| CN201607491U (en) * | 2009-12-29 | 2010-10-13 | 西安开容电子技术有限责任公司 | Feed-through filter insertion-loss testing device |
| CN201616496U (en) * | 2009-11-09 | 2010-10-27 | 东莞市苏普尔电子科技有限公司 | Novel radio frequency device of passive filter series |
| CN201780337U (en) * | 2009-12-30 | 2011-03-30 | 西安开容电子技术有限责任公司 | Lead-type filter insertion loss testing device |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN201616496U (en) * | 2009-11-09 | 2010-10-27 | 东莞市苏普尔电子科技有限公司 | Novel radio frequency device of passive filter series |
| CN201607491U (en) * | 2009-12-29 | 2010-10-13 | 西安开容电子技术有限责任公司 | Feed-through filter insertion-loss testing device |
| CN101852829A (en) * | 2009-12-30 | 2010-10-06 | 西安开容电子技术有限责任公司 | Insertion loss testing device for lead type filter and design method thereof |
| CN201780337U (en) * | 2009-12-30 | 2011-03-30 | 西安开容电子技术有限责任公司 | Lead-type filter insertion loss testing device |
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| EMI滤波器插入损耗的人工测试方法的分析;张淑萍 等;《内蒙古科技与经济》;20080830(第16期);第114-115页 * |
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Denomination of invention: Insertion loss test method of filter shield integrated module Effective date of registration: 20210508 Granted publication date: 20180817 Pledgee: Xi'an innovation financing Company limited by guarantee Pledgor: Xi'an Kairong Electronic Technologies Co.,Ltd. Registration number: Y2021990000400 |
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