CN201780337U - Lead-type filter insertion loss testing device - Google Patents
Lead-type filter insertion loss testing device Download PDFInfo
- Publication number
- CN201780337U CN201780337U CN2009203191984U CN200920319198U CN201780337U CN 201780337 U CN201780337 U CN 201780337U CN 2009203191984 U CN2009203191984 U CN 2009203191984U CN 200920319198 U CN200920319198 U CN 200920319198U CN 201780337 U CN201780337 U CN 201780337U
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- base
- lead
- insertion loss
- right sides
- wire
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Abstract
The utility model belongs to the technical field of electronic test and measurement and relates to a lead-type filter insertion loss testing device. The lead-type filter insertion loss testing device at least comprises a base, shielding boxes, a clamping device, common mode/differential mode conversion switches, N-type connectors and test wires; the two shielding boxes for placing the input/output leads of a filter are mounted on the left and right sides of the upper surface of a copper plate base with a nickel-plated surface respectively; the base between the left and right shielding boxes is fixedly connected with the clamping device for fixing the filter through a sunk screw; the test wires are installed in both shielding boxes for placing the input/output leads of the filter on the left and right sides, and connected with the common mode/differential mode conversion switches on the left and right side surfaces of the base respectively; and the N-type connectors are arranged on the left and right side surfaces of the base. Through the utility model, the test accuracy is improved.
Description
Technical field
The utility model belongs to Electronic Testing and field of measuring technique, relates to a kind of insertion loss testing device for lead type filter.
Background technology
Along with the fast development of modern electronic technology, the electronic equipment Electro Magnetic Compatibility seems more and more important, has also obtained to use very widely in each class of electronic devices as the wave filter that suppresses electromagnetic interference (EMI).Because the restriction of installing space, increasing wave filter has adopted lead-in wire as the I/O connected mode.According to electromagnetic theory, there is distribution parameter between line, distributed capacitance and distributed inductance are proportional to parallel length between line, are inversely proportional to wire spacing.For easy for installation, the wire length of lead type filter can reach 300mm～500mm, at natural laying state, lead spacing is stochastic distribution often, add in frequency greater than the above scope of 15MHz, the space electromagnetic coupled of wave filter input/output end port will become very obvious, and the both can bring very big error to the accurate test that lead type filter is inserted loss.For this reason, lead type filter is being carried out Insertion Loss when test, the distribution parameter that is brought that must suppress to go between is coupled and the space electromagnetic coupled, thereby for efficiently, the demand of insertion loss testing device for lead type filter is urgent day by day accurately.
Summary of the invention
The purpose of this utility model is to provide a kind of insertion loss testing device for lead type filter that improves test accuracy.
Technical scheme of the present utility model is: insertion loss testing device for lead type filter, it is characterized in that: which comprises at least base, shielding box, clamp device, common mode switch, N Connector and p-wire, two shielding boxs that are used to place wave filter I/O lead-in wire are installed respectively in the copper plate base upper surface left and right sides of plating nickel on surface; Be connected and fixed the clamp device that is used for fixing wave filter by sunk screw on the base between the shielding box of the left and right sides; The shielding box that the left and right sides is used for placing wave filter I/O lead-in wire all is equipped with p-wire, and p-wire links to each other with the common mode switch of base left and right sides face respectively; Face has N Connector in the base left and right sides.
Two sides and a bottom surface about described base has, base is manufactured by the copper plate of plating nickel on surface and is formed.
Described shielding box is to manufacture end box and the cover plate that forms by the copper plate of plating nickel on surface, is formed by connecting by metal hinge, and insulating paper is arranged in the shielding box.
Described clamp device is to be connected and composed by non-metal frame and the pressing plate that has turn Fastener.
Utility model advantage: the inconsistent insertion loss test result's who causes of the irregular distribution parameter that brings of lead placement dispersion thereby the utility model has suppressed lead type filter; The space electromagnetic coupled that has suppressed the lead type filter input/output end port; Realized test to a clamping common mode of wave filter input loss.
Description of drawings
Below in conjunction with the embodiment accompanying drawing the utility model is elaborated.
Fig. 1 insertion loss testing device for lead type filter example structure synoptic diagram;
Fig. 2 common mode is inserted the loss test schematic diagram;
Fig. 3 differential mode inserts the loss test schematic diagram.
Among the figure: 1, base; 2, shielding box; 3, clamp device; 4, common mode switch; 5, N Connector; 6, p-wire; 7, lead type filter.
Embodiment
As shown in Figure 1, present embodiment comprises base 1, shielding box 2, clamp device 3, common mode switch 4, N Connector 5 and p-wire 6, and two shielding boxs 2 that are used to place wave filter I/O lead-in wire are installed respectively in the copper plate base 1 upper surface left and right sides of plating nickel on surface; Be connected and fixed the clamp device 3 that is used for fixing wave filter by sunk screw on the base 1 between the left and right sides shielding box 2; The shielding box 2 that the left and right sides is used for placing wave filter I/O lead-in wire all is equipped with p-wire 6, and p-wire 6 links to each other with the common mode switch 4 of base left and right sides face respectively; At base 1 left and right sides face N Connector 5 is arranged.Base 1 is to be manufactured by the copper plate of plating nickel on surface to form, two sides and a bottom surface about having.Shielding box 2 is to manufacture end box and the cover plate that forms by the copper plate of plating nickel on surface, is formed by connecting by metal hinge, influences test result in order to prevent the distribution parameter between p-wire and shielding box cover, and portion has added insulating paper within it.Clamp device 3 is made of non-metal frame and the pressing plate that has turn Fastener, can make the abundant ground connection of filter housing after the clamping.Common mode switch 4 is realized common mode and the conversion of differential mode test circuit by switch.P-wire 6 is made of SMA connector, shielded conductor and crocodile clip.N Connector 5 is mounted in base 1 and gives transmitted test signal.
During work, fully contact and be fixed on the wave filter bottom on the base 1 with clamp device 3, cover plate on four shielding boxs 2 of proving installation is opened, two p-wires 6 of input end are connected with the wave filter incoming line respectively, two p-wires 6 of output terminal are linked to each other with the wave filter output line respectively, guarantee the corresponding connection of wave filter input/output terminal.Four shielding boxs 2 that after the inspection connection is errorless lead type filter 7 inserted the loss test devices fasten, the output terminal correspondence of the vector network analyzer that pre-sets is linked on the N Connector of proving installation " signal input " port, with corresponding the access on the N Connector of proving installation " signal output " port of input end of vector network analyzer.Common mode switch 4 (principle is seen Fig. 2 and Fig. 3) is dialed to " common mode " end and " differential mode " end respectively, write down the frequency point data of test respectively, finished the insertion loss test process of single wave filter.Similar with above-mentioned principle, the utility model also is applicable to the insertion loss instrument configuration testing scheme of signal source/frequency spectrograph, and its difference is signal source is received " signal input " port of proving installation, " signal output " port that frequency spectrograph is received proving installation.
Claims (4)
1. insertion loss testing device for lead type filter, it is characterized in that: which comprises at least base (1), shielding box (2), clamp device (3), common mode switch (4), N Connector (5) and p-wire (6), two shielding boxs (2) that are used to place wave filter I/O lead-in wire are installed respectively in copper plate base (1) the upper surface left and right sides of plating nickel on surface; Base (1) between the left and right sides shielding box (2) is gone up and is connected and fixed the clamp device (3) that is used for fixing wave filter by sunk screw; The shielding box (2) that the left and right sides is used for placing wave filter I/O lead-in wire all is equipped with p-wire (6), and p-wire (6) links to each other with the common mode switch (4) of base (1) left and right sides face respectively; Face has N Connector (5) in base (1) left and right sides.
2. insertion loss testing device for lead type filter according to claim 1 is characterized in that: two sides and a bottom surface about described base (1) has, base (1) is manufactured by the copper plate of plating nickel on surface and is formed.
3. insertion loss testing device for lead type filter according to claim 1, it is characterized in that: described shielding box (2) is to manufacture end box and the cover plate that forms by the copper plate of plating nickel on surface, be formed by connecting by metal hinge, shielding box has insulating paper in (2).
4. insertion loss testing device for lead type filter according to claim 1 is characterized in that: described clamp device (3) is to be connected and composed by non-metal frame and the pressing plate that has turn Fastener.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203191984U CN201780337U (en) | 2009-12-30 | 2009-12-30 | Lead-type filter insertion loss testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203191984U CN201780337U (en) | 2009-12-30 | 2009-12-30 | Lead-type filter insertion loss testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201780337U true CN201780337U (en) | 2011-03-30 |
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ID=43793548
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203191984U Expired - Fee Related CN201780337U (en) | 2009-12-30 | 2009-12-30 | Lead-type filter insertion loss testing device |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201780337U (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102955073A (en) * | 2012-10-25 | 2013-03-06 | 西安开容电子技术有限责任公司 | Method for testing insertion loss of filtering and shielding integrated component |
| CN101852829B (en) * | 2009-12-30 | 2013-09-11 | 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 |
| CN106553311A (en) * | 2016-11-18 | 2017-04-05 | 江苏智石科技有限公司 | A kind of irregular contour mould mould replacing trolley |
-
2009
- 2009-12-30 CN CN2009203191984U patent/CN201780337U/en not_active Expired - Fee Related
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101852829B (en) * | 2009-12-30 | 2013-09-11 | 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 |
| CN102955073A (en) * | 2012-10-25 | 2013-03-06 | 西安开容电子技术有限责任公司 | Method for testing insertion loss of filtering and shielding integrated component |
| CN102955073B (en) * | 2012-10-25 | 2018-08-17 | 西安开容电子技术有限责任公司 | The insertion loss test method of filtering shielding integral component |
| CN106553311A (en) * | 2016-11-18 | 2017-04-05 | 江苏智石科技有限公司 | A kind of irregular contour mould mould replacing trolley |
| CN106553311B (en) * | 2016-11-18 | 2019-02-05 | 江苏智石科技有限公司 | A kind of irregular contour mold mould replacing trolley |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C17 | Cessation of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20110330 Termination date: 20131230 |