CN201607491U - Feed-through filter insertion-loss testing device - Google Patents
Feed-through filter insertion-loss testing device Download PDFInfo
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- CN201607491U CN201607491U CN2009203188816U CN200920318881U CN201607491U CN 201607491 U CN201607491 U CN 201607491U CN 2009203188816 U CN2009203188816 U CN 2009203188816U CN 200920318881 U CN200920318881 U CN 200920318881U CN 201607491 U CN201607491 U CN 201607491U
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Abstract
The utility model belongs to the technical field of electronic test and measurement and particularly discloses a feed-through filter insertion-loss testing device specially used for testing. The testing device is characterized in that outer wall plates are respectively and fixedly connected to two ends of a testing box body, and the upper end of the testing box body is connected with a top cover plate via a hinge; an N-type radio frequency connector is respectively fixed on outsides of the outer wall plates at two ends of the testing box body, and a testing cable is respectively fixed inside the outer wall plates; and inner wall plates are fixed at two ends inside the testing box body, a fixed slot is fixed in the center of inside of the testing box body, a testing work-piece is inserted into the fixed slot, the middle of the testing work-piece is provided with holes suitable for mounting size of a feed-through type filter, and the middles of the inner wall plates are provided with holes suitable for the testing cables to pass through. The feed-through type filter insertion-loss testing device improves testing accuracy and is adaptable to testing requirements of different feed-through filters.
Description
Technical field
The utility model belongs to Electronic Testing and field of measuring technique, and particularly a kind of feedthrough mode filter that is specifically designed to test inserts the loss test device.
Background technology
Fast development along with modern electronic technology, the electronic equipment Electro Magnetic Compatibility seems more and more important, because the feedthrough mode filter does not have distributed capacitance and the inductance that ground lead produces, and as the filtering device that suppresses high frequency interference, the interference that has been widely used in little current DC power supply input/output end port HW High Way suppresses.Rectify and improve according to electromagnetic coupled, when frequency is above greater than 15MHz, will produce electromagnetic coupled between the wave filter input/output end port, and when frequency is above greater than 80MHz～100MHz, electromagnetic coupled between port just is equivalent to lead directly to, therefore feed-through filter must combine with shielding in engineering is used, and adopts the connected mode through shielding cavity, just can obtain good filtering effect.Therefore insert the test of loss for feed-through filter, must embody this specific character, otherwise will cause the actual insertion loss that records of feed-through filter less than its true index owing to the space electromagnetic coupled of input/output end port.For this reason, propose the simulation actual working environment, be applicable to that the feed-through filter proving installation of different installation forms and size just seems particularly important.
Summary of the invention
The purpose of this utility model is to overcome when testing feed-through filter insertion loss in the past, the shortcoming that has the space electromagnetic coupled of input/output end port, provide a kind of feedthrough mode filter to insert the loss test device, improved the accuracy of test, and applicable to the requirement of different feed-through filters tests.
The technical scheme that its technical matters that solves the utility model adopts is: design a kind of feedthrough mode filter and insert the loss test device, it is made of outside wallboard, madial wall version, N type radio frequency connector, test fixture, test cable, conductive gasket, lamina tecti, lock screw, hinge, fixed slot and test box main body, it is characterized in that: test box main body two ends are fixedly connected with outside wallboard, and test box main body upper end is connected with lamina tecti by hinge; The wallboard outside, the outside at test box main body two ends is fixed with N type radio frequency connector, and wallboard inboard, the outside is fixed with test cable; Test box body interior two ends are fixed with inner side wall plate, test box body interior center fixed has fixed slot, test fixture is inserted in the fixed slot, the test fixture middle part has the hole that is suitable for the feed-through filter installation dimension, and the inner side wall plate middle part has and is suitable for the hole that test cable passes through.
Described test cable is to be made of shielded conductor plug and crocodile clip, and the shielded conductor plug is plugged on the wallboard of the outside and N type radio frequency connector junction, and crocodile clip then is clipped on the feed-through filter at test fixture middle part.
Described test box main body, lamina tecti, outside wallboard, inner side wall plate are made by the red copper sheet material of plating nickel on surface.
All surface of contact of described lamina tecti and test box main body, test fixture and test box main body all post conductive gasket, and conductive gasket is the conductive fabric liner that has the sponge core.
Described lamina tecti is provided with lock screw.
The beneficial effects of the utility model are and have realized being applicable to the requirement of different feed-through filters tests by the test fixture assembly.
Description of drawings
Below in conjunction with accompanying drawing by embodiment is described in detail the utility model:
Fig. 1 is the structural representation that feed-through filter inserts the loss test device.
Among the figure: 1, outside wallboard; 2, lamina tecti; 3, N type radio frequency connector; 4, test cable; 5, test fixture; 6, inner side wall plate; 7, conductive gasket; 8, lock screw; 9, hinge; 10, fixed slot; 11, feed-through filter; 12, test box main body.
Embodiment
As shown in Figure 1, present embodiment is by outside wallboard 1, madial wall version 6, N type radio frequency connector 3, test fixture 5, test cable 4, conductive gasket 7, lamina tecti 2, lock screw 8, hinge 9, fixed slot 10 and test box main body 12 constitute, test box main body 12 two ends are fixedly connected with outside wallboard 1, but test box main body 12 upper ends are connected with the lamina tecti 2 of folding by hinge 9, outside wallboard 1 outside at test box main body 12 two ends is fixed with N type radio frequency connector 3, wallboard 1 inboard, the outside then is fixed with test cable 4, and test cable 4 can reduce cable field-line, line-line coupling; Test box main body 12 inner two ends all are fixed with inner side wall plate 6, test box main body 12 bosoms are fixed with fixed slot 10, test fixture 5 is inserted in the fixed slot 10, test box main body 12 is separated into two parts, high-frequency signal space electromagnetic coupled to I/O is isolated, thereby has improved the actual test value that inserts loss; Test fixture 5 middle parts have the hole that is suitable for feed-through filter 11 installation dimensions, and inner side wall plate 6 middle parts have and are suitable for the hole that test cable 4 passes through.
Test box main body 12, lamina tecti 2, outside wallboard 1, inner side wall plate 6 are made by the red copper sheet material of plating nickel on surface, and outside wallboard 1 and inner side wall plate 6 formation double layer screens, have well shielded the interference of extraneous high-frequency signal.
All post conductive gasket 7 at lamina tecti 2 and test box main body 12, test fixture 5 with all surface of contact of test box main body 12, conductive gasket 7 is the conductive fabric liner that has the sponge core, thereby suppresses the electromagnetic leakage in slit, surface of contact place.
Lamina tecti 2 is provided with lock screw 8, and lamina tecti 2 closed backs are locked by lock screw 8 and test box main body 12.
During test, tested feed-through filter 11 is fixed in the hole at test fixture 5 middle parts, and test fixture 5 is inserted in the fixed slot 10, and the crocodile clip of test cable 4 by an end linked to each other with tested feed-through filter 11; Then lamina tecti 2 is connected with test box main body 12 by metal hinge 9; At last that lamina tecti 2 and test box main body 12 usefulness lock screws 8 are locked, thus test.
Claims (5)
1. the feedthrough mode filter inserts the loss test device, it is made of outside wallboard (1), madial wall version (6), N type radio frequency connector (3), test fixture (5), test cable (4), conductive gasket (7), lamina tecti (2), lock screw (8), hinge (9), fixed slot (10) and test box main body (12), it is characterized in that: test box main body (12) two ends are fixedly connected with outside wallboard (1), and test box main body (12) upper end is connected with lamina tecti (2) by hinge (9); Outside wallboard (1) outside at test box main body (12) two ends is fixed with N type radio frequency connector (3), and outside wallboard (1) inboard is fixed with test cable (4); The inner two ends of test box main body (12) are fixed with inner side wall plate (6), test box main body (12) bosom is fixed with fixed slot (10), test fixture (5) is inserted in the fixed slot (10), test fixture (5) middle part has the hole that is suitable for feed-through filter (11) installation dimension, and inner side wall plate (6) middle part has and is suitable for the hole that test cable (4) passes through.
2. feedthrough mode filter according to claim 1 inserts the loss test device, it is characterized in that: described test cable (4) is to be made of shielded conductor plug and crocodile clip, the shielded conductor plug is plugged on outside wallboard (1) and goes up and N type radio frequency connector (3) junction, and crocodile clip then is clipped on the feed-through filter (11) at test fixture (5) middle part.
3. feedthrough mode filter according to claim 1 inserts the loss test device, and it is characterized in that: it is characterized in that: described test box main body (12), lamina tecti (2), outside wallboard (1), inner side wall plate (6) are made by the red copper sheet material of plating nickel on surface.
4. feedthrough mode filter according to claim 1 inserts the loss test device, it is characterized in that: described lamina tecti (2) all posts conductive gasket (7) with test box main body (12), test fixture (5) with all surface of contact of test box main body (12), and conductive gasket (7) is for having the conductive fabric liner of sponge core.
5. feedthrough mode filter according to claim 1 inserts the loss test device, and it is characterized in that: described lamina tecti (2) is provided with lock screw (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203188816U CN201607491U (en) | 2009-12-29 | 2009-12-29 | Feed-through filter insertion-loss testing device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009203188816U CN201607491U (en) | 2009-12-29 | 2009-12-29 | Feed-through filter insertion-loss testing device |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201607491U true CN201607491U (en) | 2010-10-13 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2009203188816U Expired - Fee Related CN201607491U (en) | 2009-12-29 | 2009-12-29 | Feed-through filter insertion-loss testing device |
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| CN (1) | CN201607491U (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 |
| CN104062510B (en) * | 2014-07-07 | 2016-09-28 | 中国船舶重工集团公司第七二四研究所 | The two-port reciprocity feeder line insert loss method farther out of measurement error can be reduced |
| CN113514702A (en) * | 2021-03-24 | 2021-10-19 | 上海克开电器有限公司 | Test box for insertion loss test |
-
2009
- 2009-12-29 CN CN2009203188816U patent/CN201607491U/en not_active Expired - Fee Related
Cited By (4)
| 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 |
| 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 |
| CN104062510B (en) * | 2014-07-07 | 2016-09-28 | 中国船舶重工集团公司第七二四研究所 | The two-port reciprocity feeder line insert loss method farther out of measurement error can be reduced |
| CN113514702A (en) * | 2021-03-24 | 2021-10-19 | 上海克开电器有限公司 | Test box for insertion loss test |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20101013 Termination date: 20141229 |
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| EXPY | Termination of patent right or utility model |