CN204086315U - Circuit board transmission line test connector - Google Patents
Circuit board transmission line test connector Download PDFInfo
- Publication number
- CN204086315U CN204086315U CN201420438617.7U CN201420438617U CN204086315U CN 204086315 U CN204086315 U CN 204086315U CN 201420438617 U CN201420438617 U CN 201420438617U CN 204086315 U CN204086315 U CN 204086315U
- Authority
- CN
- China
- Prior art keywords
- transmission line
- circuit board
- escape groove
- test connector
- line test
- 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 - Lifetime
Links
- 230000005540 biological transmission Effects 0.000 title claims abstract description 60
- 238000012360 testing method Methods 0.000 title claims abstract description 38
- NJPPVKZQTLUDBO-UHFFFAOYSA-N novaluron Chemical compound C1=C(Cl)C(OC(F)(F)C(OC(F)(F)F)F)=CC=C1NC(=O)NC(=O)C1=C(F)C=CC=C1F NJPPVKZQTLUDBO-UHFFFAOYSA-N 0.000 claims abstract description 35
- 239000000523 sample Substances 0.000 claims abstract description 30
- 238000009413 insulation Methods 0.000 claims description 20
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 13
- 229910052802 copper Inorganic materials 0.000 claims description 13
- 239000010949 copper Substances 0.000 claims description 13
- 238000003466 welding Methods 0.000 abstract description 8
- 230000000694 effects Effects 0.000 abstract description 3
- 230000011514 reflex Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 4
- 238000013461 design Methods 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 229910000679 solder Inorganic materials 0.000 description 3
- 238000010276 construction Methods 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 238000005259 measurement Methods 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 241000276425 Xiphophorus maculatus Species 0.000 description 1
- 230000003064 anti-oxidating effect Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 210000004907 gland Anatomy 0.000 description 1
- PCHJSUWPFVWCPO-UHFFFAOYSA-N gold Chemical compound [Au] PCHJSUWPFVWCPO-UHFFFAOYSA-N 0.000 description 1
- 229910052737 gold Inorganic materials 0.000 description 1
- 239000010931 gold Substances 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
Landscapes
- Measuring Leads Or Probes (AREA)
Abstract
The utility model relates to a kind of circuit board transmission line test connector, and it comprises base and probe.The alternative traditional standard SMA connector of this circuit board transmission line test connector is tested the outer transmission line of circuit board.Base offers escape groove at lower surface, and the part of the close lower surface of probe is positioned at this escape groove, thus can be staggered by this escape groove and transmission line and can not press and cause short circuit on the transmission line in pedestal portion, thus this connector is tested after can being directly connected from the side of outer transmission line with transmission line, and via hole need not be offered to the test lead of outer transmission line on circuit boards, when can avoid testing, signal produces the reflex of stump effect distributary phenomenon and the generation of flex point place in via segments, and also can not change the air layer dielectric constant values on transmission line and welding resistance surface, thus improve measuring accuracy and accuracy.
Description
Technical field
The utility model relates to printed circuit board field tests, especially relates to a kind of circuit board transmission line test connector.
Background technology
Along with the development of the 4G communication technology, high speed electric products has become the trend of industry development, thus also more and more higher for the control overflow of transmission line in printed circuit board (PCB).The control of transmission line being improved except the impedance Control precision of transmission line and the loss of reduction transmitting procedure except requiring, also requiring that the characteristic impedance to transmission line, loss measurement result are closer to its actual value.The impedance design of outer transmission line can in two kinds of situation: one is without welding resistance pattern, and namely signals layer side is air; Another has welding resistance pattern, and signals layer side arranges solder mask, is air outside solder mask.For the deviation of checking design resistance value, generally use standard SMA connector to test in traditional test process, measure its impedance or loss by network analyzer.But, when using standard SMA connector to test the impedance of outer transmission line or loss value, generally all need design transmission line via hole.When skin is without welding resistance, if will short circuit be caused from the transmission line place positive planar survey of layer, thus can only carry out connection from the back side of transmission line place layer and measure; When skin has welding resistance, mostly also adopt SMA connector to be connected by transmission line via hole from the back side of transmission line place layer, then signals layer is placed on testing stand and tests.But due to the specific inductive capacity of mesa material different from air, the authenticity of impedance and loss measurement value can be affected.In addition, also may cause the impedance mismatch of hole and line at signal via place, signal corner reflects, increase loss.When adopt from layer side, transmission line place, sub-miniature A connector to be connected with transmission line measure time, standard SMA connector gland welding resistance place among a small circle on the transmission line, although can short circuit be avoided, but the change of the specific inductive capacity of this front, place solder mask can be caused, will impedance fluctuations be caused, and leave a segment signal hole, the suitable one section of stump (stub) of length of telltale hole, cause signal to shunt herein, produce resonance, increase loss.
Utility model content
Based on this, be necessary to provide a kind of circuit board transmission line test connector that can improve measuring accuracy.
A kind of circuit board transmission line test connector, comprising:
Base, comprises pedestal portion and connecting portion, and described pedestal portion has relative upper surface and lower surface, and described connecting portion is established on the upper surface, and the axis of described connecting portion offers the through hole being through to described lower surface; And
Probe, is located in described through hole, and one end is protruded or maintained an equal level in described lower surface, is provided with insulation course between the periphery wall of described probe and the hole wall of described through hole;
Described pedestal portion offers escape groove at described lower surface, described escape groove extends to the side in described pedestal portion and forms opening at described side, the depth capacity of described escape groove is less than the height in described pedestal portion, and the part of the close described lower surface of described insulation course and described probe is positioned at described escape groove.
Wherein in an embodiment, described escape groove is arranged around the portion perimeter wall of described insulation course, and extends to a side in described pedestal portion, and the bottom land of described escape groove is arc shape.
Wherein in an embodiment, described connecting portion is hollow cylindrical structure, and periphery wall is provided with the external thread for being connected with external equipment.
Wherein in an embodiment, described probe comprises the hollow copper bar and elasticity fitting with stability characteristic (quality) resistance value, and described elasticity fitting is located at least one end of described hollow copper bar.
Wherein in an embodiment, described elasticity fitting is the spring being set in described hollow copper bar two ends.
Wherein in an embodiment, the length of described probe is greater than the length of described insulation course, and described insulation course is stretched out at the two ends of described probe.
Wherein in an embodiment, the opening angle of described escape groove is 60 ° ~ 120 °.
Wherein in an embodiment, described pedestal portion is provided with threaded securing bores, and described threaded securing bores is through to described lower surface from described upper surface.
Wherein in an embodiment, described pedestal portion is provided with for the insert hole with external equipment grafting.
The alternative traditional standard SMA connector of foregoing circuit board transmission line test connector is tested the outer transmission line of circuit board.Due to pedestal, portion offers escape groove at lower surface, and the part of the close lower surface of probe is positioned at this escape groove, thus can be staggered by this escape groove and transmission line and can not press and cause short circuit on the transmission line in pedestal portion, thus this connector is tested after can being directly connected from the side of outer transmission line with transmission line, and via hole need not be offered to the test lead of outer transmission line on circuit boards, when can avoid testing, signal produces the reflex of stump effect distributary phenomenon and the generation of flex point place in via segments, and also can not change the air layer dielectric constant values on transmission line and welding resistance surface, thus improve measuring accuracy and accuracy.
Accompanying drawing explanation
Fig. 1 is the structural representation of the circuit board transmission line test connector of an embodiment;
Another viewing angle constructions schematic diagram that Fig. 2 is connector shown in Fig. 1;
Another viewing angle constructions schematic diagram that Fig. 3 is connector shown in Fig. 1;
Fig. 4 is the test schematic diagram on circuit boards of connector described in Fig. 1.
Embodiment
For the ease of understanding the utility model, below with reference to relevant drawings, the utility model is described more fully.Preferred embodiment of the present utility model is given in accompanying drawing.But the utility model can realize in many different forms, is not limited to embodiment described herein.On the contrary, provide the object of these embodiments be make the understanding of disclosure of the present utility model more comprehensively thorough.
It should be noted that, when element is called as " being fixed on " another element, directly can there is element placed in the middle in it on another element or also.When an element is considered to " connection " another element, it can be directly connected to another element or may there is centering elements simultaneously.
Unless otherwise defined, all technology used herein and scientific terminology are identical with belonging to the implication that those skilled in the art of the present utility model understand usually.The object of the term used in instructions of the present utility model herein just in order to describe specific embodiment, is not intended to be restriction the utility model.Term as used herein " and/or " comprise arbitrary and all combinations of one or more relevant Listed Items.
Incorporated by reference to Fig. 1, Fig. 2 and Fig. 3, the circuit board transmission line of an embodiment tests connector (hereinafter referred to as connector) 10 for connecting external testing apparatus and circuit board, to carry out impedance or loss test to the transmission line on circuit board.Connector 10 comprises base 100 and probe 200.
Base 100 preferably stainless steel makes, and comprises pedestal portion 110 and connecting portion 120.Pedestal portion 110, in platy structure, has relative upper surface 112 and lower surface 114.Connecting portion 120 is located on upper surface 112.The axis of connecting portion 120 offers through hole (not indicating in figure).This through hole runs through whole connecting portion 120 and pedestal portion 110 successively from one end of connecting portion 120.
In the present embodiment, connecting portion 120 is hollow cylindrical structure.The periphery wall of connecting portion 120 is provided with external thread.Connecting portion 120 is threaded with external equipment by this external thread.Can understand, in other embodiments, the shape of connecting portion 120 is not limited thereto, as also can being other column structures such as angular column body, six cylinders; And connecting portion 120 is also not limited to be threaded with the connected mode of external equipment, as being the connected modes etc. such as buckle.
Probe 200 is located in through hole.One end of probe 200 is protruded or maintains an equal level in lower surface, for abutting with the transmission line on circuit board.Insulation course 300 is provided with between the periphery wall of probe 200 and the hole wall of through hole.In the present embodiment, probe 200 is abutted with the hole wall of through hole by this insulation course 300, thus is fixed in through hole.Insulation course 300 wraps up the periphery wall of probe 200, thus probe 200 and base 100 is insulated, and causes interference to avoid short circuit to test process.
The length of probe 200 is greater than the length of insulation course 300, thus insulation course 300 is stretched out at the two ends of probe 200.The probe 200 of present embodiment comprises hollow copper bar 210 and elasticity fitting 220.Hollow copper bar 210 adopts standard copper rod to make, characteristic impedance value stabilization.The surface of hollow copper bar 210 is coated with the anti oxidation layer (not shown) of specified impedance value stabilization, as layer gold, to slow down the oxidation of hollow copper bar 210, ensures the stable of probe 200 performance.
Elasticity fitting 220 has two, is located at the two ends of hollow copper bar 210 respectively.In the present embodiment, elasticity fitting 220 is for being set in the spring at hollow copper bar 210 two ends, and one end is for abutting with the transmission line on circuit board and forming path, and the other end is used for abutting with external equipment and forming path.
Can understand, in other embodiments, probe 200 structure be not limited to above described in, as elasticity fitting can not had or only have an elasticity fitting etc.
Further, pedestal portion 110 offers escape groove 116 from lower surface 114 to the direction of upper surface 112.Escape groove 116 extends to the side in pedestal portion 110 and forms opening at corresponding side.The part of the part of the close lower surface 114 of insulation course 300 and the close lower surface 114 of probe 200 is all positioned at escape groove 116.Concrete in the present embodiment, escape groove 116 around insulation course 300 portion perimeter wall and extend to the side in pedestal portion 110.The opening angle of the sidewall of escape groove 116 is 90 ° ~ 100 °, and the number of degrees of the angle that also namely tangent with insulation course 300 two side is formed are 60 ° ~ 120 °.The bottom land of the escape groove 116 of present embodiment is half tubaeform, and depth capacity is less than the height in pedestal portion 110.Can understand, in other embodiments, described in above the shape of escape groove 116 is not limited to, the opening angle as the sidewall of escape groove 116 is not limited to 60 ° ~ 120 °, as long as be formed in lower surface 114 to form a groove extended around insulation course 300 and to the side in pedestal portion 110; And the bottom land of escape groove 116 also can be the shape such as flat; In addition, escape groove 116 can extend to the dual-side in pedestal portion 110 and not necessarily arrange around insulation course 300,200 can be formed with this transmission line as long as escape groove 116 is formed with opening that transmission line on power circuit board passes and pops one's head in escape groove 116 and is electrically connected.
In addition, in the present embodiment, pedestal portion 110 is provided with threaded securing bores 111.Threaded securing bores 111 is through to lower surface 114 from the upper surface 112 in pedestal portion 110.Threaded securing bores 111 has two, divides the both sides being located at connecting portion 120.Pedestal portion 110 can use the structures such as screw to be fixed on circuit board under test by this threaded securing bores 111.
Further, pedestal portion 110 is also provided with for the insert hole 113 with external equipment grafting.Insert hole 113 has two, divides the both sides being located at two threaded securing bores 111.
Can understand, in other embodiments, pedestal portion 110 is not limited to recited above by threaded securing bores 111 or insert hole 113 with the connected mode of circuit board under test or external equipment, and the connected mode that can also be applicable to for other, as clamping, grafting etc.
Incorporated by reference to Fig. 4, the outer transmission line 810 of the alternative traditional standard SMA connector of connector 10 to circuit board 800 is tested.In test process, as long as ensure that transmission line 810 is connected with probe 200 by escape groove 116, just arbitrarily can adjust the position of base 110 and circuit board 800, as 45 ° ~ 90 ° etc. can be tilted.Because pedestal portion 110 offers escape groove 116 at lower surface 114, and the part of the close lower surface 114 of probe 200 is positioned at this escape groove 116, thus can be staggered by this escape groove 116 and transmission line 810 and can not be pressed on transmission line 810 and cause short circuit in pedestal portion 110, thus this connector 10 is tested after can being directly connected from the side of outer transmission line 810 with transmission line 810, and on circuit board 800, via hole need not be offered to the test lead of outer transmission line 810, when can avoid testing, signal produces the reflex of stump effect distributary phenomenon and the generation of flex point place in via segments, and also can not change the air layer dielectric constant values on transmission line 810 and welding resistance surface, thus improve measuring accuracy and accuracy.
The above embodiment only have expressed several embodiment of the present utility model, and it describes comparatively concrete and detailed, but therefore can not be interpreted as the restriction to the utility model the scope of the claims.It should be pointed out that for the person of ordinary skill of the art, without departing from the concept of the premise utility, can also make some distortion and improvement, these all belong to protection domain of the present utility model.Therefore, the protection domain of the utility model patent should be as the criterion with claims.
Claims (9)
1. a circuit board transmission line test connector, is characterized in that, comprising:
Base, comprises pedestal portion and connecting portion, and described pedestal portion has relative upper surface and lower surface, and described connecting portion is established on the upper surface, and the axis of described connecting portion offers the through hole being through to described lower surface; And
Probe, is located in described through hole, and one end is protruded or maintained an equal level in described lower surface, is provided with insulation course between the periphery wall of described probe and the hole wall of described through hole;
Described pedestal portion offers escape groove at described lower surface, described escape groove extends to the side in described pedestal portion from lower surface and forms opening at described side, the depth capacity of described escape groove is less than the height in described pedestal portion, and the part of the close described lower surface of described insulation course and described probe is positioned at described escape groove.
2. circuit board transmission line test connector as claimed in claim 1, it is characterized in that, described escape groove is arranged around the portion perimeter wall of described insulation course, and extends to a side in described pedestal portion, and the bottom land of described escape groove is arc shape.
3. circuit board transmission line test connector as claimed in claim 1, it is characterized in that, described connecting portion is hollow cylindrical structure, and periphery wall is provided with the external thread for being connected with external equipment.
4. circuit board transmission line test connector as claimed in claim 1, it is characterized in that, described probe comprises the hollow copper bar and elasticity fitting with stability characteristic (quality) resistance value, and described elasticity fitting is located at least one end of described hollow copper bar.
5. circuit board transmission line test connector as claimed in claim 4, it is characterized in that, described elasticity fitting is the spring being set in described hollow copper bar two ends.
6. circuit board transmission line test connector as claimed in claim 1, it is characterized in that, the length of described probe is greater than the length of described insulation course, and described insulation course is stretched out at the two ends of described probe.
7. the circuit board transmission line test connector according to any one of claim 1 ~ 6, it is characterized in that, the opening angle of described escape groove is 60 ° ~ 120 °.
8. circuit board transmission line test connector as claimed in claim 1, it is characterized in that, described pedestal portion is provided with threaded securing bores, and described threaded securing bores is through to described lower surface from described upper surface.
9. circuit board transmission line test connector as claimed in claim 1, it is characterized in that, described pedestal portion is provided with for the insert hole with external equipment grafting.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438617.7U CN204086315U (en) | 2014-08-05 | 2014-08-05 | Circuit board transmission line test connector |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420438617.7U CN204086315U (en) | 2014-08-05 | 2014-08-05 | Circuit board transmission line test connector |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN204086315U true CN204086315U (en) | 2015-01-07 |
Family
ID=52179016
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420438617.7U Expired - Lifetime CN204086315U (en) | 2014-08-05 | 2014-08-05 | Circuit board transmission line test connector |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN204086315U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618372A (en) * | 2019-09-06 | 2019-12-27 | 苏州浪潮智能科技有限公司 | Immersion liquid cooling-based high-precision electrical loss testing device for PCB laminated board |
| WO2022007190A1 (en) * | 2020-07-08 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Transmission module test device |
-
2014
- 2014-08-05 CN CN201420438617.7U patent/CN204086315U/en not_active Expired - Lifetime
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110618372A (en) * | 2019-09-06 | 2019-12-27 | 苏州浪潮智能科技有限公司 | Immersion liquid cooling-based high-precision electrical loss testing device for PCB laminated board |
| CN110618372B (en) * | 2019-09-06 | 2021-12-17 | 苏州浪潮智能科技有限公司 | Immersion liquid cooling-based high-precision electrical loss testing device for PCB laminated board |
| WO2022007190A1 (en) * | 2020-07-08 | 2022-01-13 | 瑞声声学科技(深圳)有限公司 | Transmission module test device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term | ||
| CX01 | Expiry of patent term |
Granted publication date: 20150107 |