CN215345210U - Crimping connector structure for improving high-speed signal quality - Google Patents
Crimping connector structure for improving high-speed signal quality Download PDFInfo
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- CN215345210U CN215345210U CN202121150758.5U CN202121150758U CN215345210U CN 215345210 U CN215345210 U CN 215345210U CN 202121150758 U CN202121150758 U CN 202121150758U CN 215345210 U CN215345210 U CN 215345210U
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Abstract
The utility model relates to a crimping connector structure for improving high-speed signal quality, which comprises a plurality of pairs of signal pins, wherein the signal pins are connected with high-speed differential signal wiring, a plurality of ground pins are symmetrically arranged on two sides of each pair of signal pins, a backflow ground hole is arranged between each ground pin and the adjacent signal pin, the backflow ground holes are grounded, the size of a bonding pad of each backflow ground hole is smaller than that of the bonding pad of the ground pin, the edge of the bonding pad of each backflow ground hole is tangent to the edge of the bonding pad of the adjacent ground pin, the backflow ground holes on the left side and the right side of each pair of signal pins are symmetrical, and the backflow ground holes on the upper side and the lower side of each pair of signal pins are also symmetrical. The utility model adds the backflow ground hole between the original ground pin and the signal pin, and the backflow ground hole has the same property with the ground pin and is grounded, thereby shortening the signal backflow path and reducing the interference between two high-speed differential signals, improving the quality of the high-speed signals, and obtaining more obvious improvement effect along with the increasing of the signal speed.
Description
Technical Field
The utility model relates to the field of circuit boards, in particular to a crimping connector structure for improving high-speed signal quality.
Background
With the high-speed development of electronic communication technology, the speed of signal transmission and exchange is faster and faster, so that the circuit board carrying high-speed transmission signals becomes the demand of the current market, and the circuit board capable of meeting high-speed signals such as 25G, 56G, 128G and the like is the mainstream and the attack point of the current design.
In actual design work, the fact that the crimp connector which plays a role in signal exchange is improved under the condition that the same wiring and circuit board materials are ensured enables the signal quality of the source head end or the tail end of the signal transmission system to be improved. However, the pin pitch and size of most compression connectors are fixed, the existing improvement method is to change the size of the antipad at the high-speed differential signal routing position, the antipad generally refers to the area where the upper and lower reference planes of the signal at the changed layer or the connector pins empty part of the reference copper sheet, and thus the method is limited by the size of the connector circuit board, and the improvement effect is limited.
The above problems are worth solving.
Disclosure of Invention
In order to solve the problem that the signal improvement effect obtained by the existing improvement method aiming at the crimp connector is limited, the utility model provides a crimp connector structure for improving the quality of high-speed signals.
The technical scheme of the utility model is as follows:
the utility model provides an improve high-speed signal quality's crimping connector structure, includes a plurality of pairs of signal pins, the high-speed differential signal of signal pin connection is walked the line, and every is to the bilateral symmetry of signal pin is equipped with a plurality of ground pins, its characterized in that, every ground pin with adjacent be equipped with backward flow ground hole between the signal pin, backward flow ground hole ground connection, and every is to the backward flow ground hole symmetry of signal pin left and right sides, should be to the backward flow ground hole of signal pin upper and lower both sides also symmetry.
The utility model according to the above aspect is characterized in that the pad edge of the reflow ground hole is tangent to the pad edge of the adjacent ground pin.
The utility model according to the above aspect is characterized in that a distance between a pad edge of the reflow ground hole and a pad edge of the adjacent signal pin is greater than 6 mils.
The utility model according to the above aspect is characterized in that the reflow ground hole includes a central drilled hole and a peripheral pad, the drilled hole has a diameter of 8 mil, and the pad of the reflow ground hole has a diameter of 16 mil.
The utility model according to the above aspect is characterized in that two pairs of the ground pins are symmetrically provided on both sides of each pair of the signal pins.
The utility model according to the above aspect is characterized in that the center-to-center distance between two adjacent ground pins on the same side of each pair of signal pins is smaller than the center-to-center distance between two adjacent return ground holes on the same side.
The utility model according to the above aspect is characterized in that the pad size of the reflow ground hole is smaller than the pad size of the ground pin.
The utility model according to the scheme has the advantages that:
the utility model adds the backflow ground hole between the original ground pin and the signal pin, and the backflow ground hole has the same property with the ground pin and is grounded, thereby shortening the signal backflow path and reducing the interference between two high-speed differential signals, improving the quality of the high-speed signals, and obtaining more obvious improvement effect along with the increasing of the signal speed.
Drawings
FIG. 1 is a schematic structural view of the present invention;
FIG. 2 is an enlarged view of portion A of FIG. 1;
FIG. 3 is a schematic diagram of a prior art configuration;
FIG. 4 is an enlarged view of portion B of FIG. 3;
FIG. 5 is a diagram illustrating the effect of signal testing according to the present invention.
In the figure, 1, signal pin; 2. a ground pin; 3. a return ground hole; 4. high-speed differential signal routing; 5. turning over; 6. and (7) a PCB board.
Detailed Description
For better understanding of the objects, technical solutions and effects of the present invention, the present invention will be further explained with reference to the accompanying drawings and examples. Meanwhile, the following described examples are only for explaining the present invention, and are not intended to limit the present invention.
It will be understood that when an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "upper", "lower", "left", "right", and the like indicate orientations or positions based on the orientations or positions shown in the drawings, and are only for convenience of description and not to be construed as limiting the technical solution. The meaning of "a number" is two or more unless specifically defined otherwise.
As shown in fig. 1 and fig. 2, a crimping connector structure for improving high-speed signal quality includes a plurality of pairs of signal pins 1, the signal pins 1 are connected to a high-speed differential signal routing line 4, a plurality of pairs of ground pins 2 are symmetrically arranged on both sides of each pair of signal pins 1, a backflow ground hole 3 is arranged between each ground pin 2 and the adjacent signal pin 1, the backflow ground holes 3 and the ground pins 2 are both grounded, the backflow ground holes 3 on both sides of each pair of signal pins 1 are symmetrical, and the backflow ground holes 3 on both sides of the pair of signal pins 1 are also symmetrical.
As shown in fig. 3 and 4, the PCB board 6 of the conventional press-fit connector has the following structure: the four ground pins 2 surround the middle two signal pins 1, and a pair of signal pins 1 is connected with a high-speed differential signal routing 4, the flow direction of a high-speed signal is from a driver to a load along a transmission line of a PCB 6, and then the high-speed signal returns along the ground or a power supply through the shortest path to form a return path; in order to solve the above problems, the conventional method for improving the circuit board of the crimp connector is to improve the signal quality by changing the size of the antipad 5 at the high-speed differential signal routing 4, but due to space limitation, the signal improvement effect is limited, and the requirement cannot be met.
Compared with the prior art, the utility model has the advantages that the backflow ground hole is additionally arranged between the original ground pin and the signal pin, and the backflow ground hole and the ground pin have the same property and are grounded, so that the signal backflow path is shortened, the interference between two high-speed differential signals is reduced, and the quality of the high-speed signals is improved.
In this embodiment, the pad edge of the reflow hole 3 is tangent to the pad edge of the adjacent ground pin 2, so as to ensure that the newly added reflow hole does not interfere with the original ground pin. The return ground via 3 comprises a central bore of 8 mil diameter and a peripheral pad of 16 mil diameter. According to different types of compression connectors, the sizes of the drilling holes and the welding pads of the reflow ground holes 3 can be adjusted according to requirements; and the pad edge of the reflow ground hole 3 is spaced from the pad edge of the adjacent signal pin 1 by more than 6 mils.
In the present embodiment, the pad size of the reflow ground hole 3 is smaller than that of the ground pin 2. Two pairs of ground pins 2 are symmetrically arranged on two sides of each pair of signal pins 1. The center distance between two adjacent ground pins 2 on the same side of each pair of signal pins 1 is smaller than the center distance between two adjacent return ground holes 3 on the same side, so that the interference between two high-speed differential signals is further reduced, and the quality of the high-speed signals is optimized.
As shown in fig. 5, the present invention further provides a simulation comparison test, comparing the test results of the present invention with the test results of the prior art, it can be seen that the improved structure of the crimp connector of the present invention achieves the improvement of crosstalk noise during high-speed signal transmission by increasing the return ground via 3 under the same conditions, and the obtained improvement effect is more obvious as the signal speed is faster and faster, for example, at a frequency of 33GHz, the test result of the present invention is-13 dB, and the test result of the prior art is-37 dB.
The technical features of the above embodiments can be arbitrarily combined, and for the sake of brevity, all possible combinations of the technical features in the above embodiments are not described, but should be considered as the scope of the present specification as long as there is no contradiction between the combinations of the technical features.
The above examples only show some embodiments of the present invention, and the description thereof is more specific and detailed, but not to be construed as limiting the scope of the utility model. It should be noted that, for a person skilled in the art, several variations and modifications can be made without departing from the inventive concept, which falls within the scope of the present invention. Therefore, the protection scope of the present patent shall be subject to the appended claims.
Claims (7)
1. The utility model provides an improve high-speed signal quality's crimping connector structure, includes a plurality of pairs of signal pins, the high-speed differential signal of signal pin connection is walked the line, and every is to the bilateral symmetry of signal pin is equipped with a plurality of ground pins, its characterized in that, every ground pin with adjacent be equipped with backward flow ground hole between the signal pin, backward flow ground hole ground connection, and every is to the backward flow ground hole symmetry of signal pin left and right sides, should be to the backward flow ground hole of signal pin upper and lower both sides also symmetry.
2. The structure of claim 1, wherein the pad edge of said reflow ground hole is tangent to the pad edge of the adjacent ground pin.
3. The structure of claim 1, wherein the pad edge of said reflow ground hole is spaced more than 6 mils from the pad edge of the adjacent signal pin.
4. A compression connector structure for improving high speed signal quality as claimed in claim 1, wherein said reflow ground via includes a central bore and a peripheral pad, said bore having a diameter of 8 mil, said reflow ground via pad having a diameter of 16 mil.
5. A compression connector structure for improving high speed signal quality as claimed in claim 1, wherein two pairs of said ground pins are symmetrically disposed on both sides of each pair of said signal pins.
6. A compression connector structure for improving high-speed signal quality as claimed in claim 5, wherein the center-to-center distance between two adjacent ground pins on the same side of each pair of said signal pins is smaller than the center-to-center distance between two adjacent said return ground holes on the same side.
7. A compression connector structure for improving high speed signal quality as claimed in claim 1, wherein said reflow ground hole has a pad size smaller than that of said ground pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150758.5U CN215345210U (en) | 2021-05-26 | 2021-05-26 | Crimping connector structure for improving high-speed signal quality |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202121150758.5U CN215345210U (en) | 2021-05-26 | 2021-05-26 | Crimping connector structure for improving high-speed signal quality |
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| CN215345210U true CN215345210U (en) | 2021-12-28 |
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| CN202121150758.5U Active CN215345210U (en) | 2021-05-26 | 2021-05-26 | Crimping connector structure for improving high-speed signal quality |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115696737A (en) * | 2022-11-01 | 2023-02-03 | 超聚变数字技术有限公司 | Circuit board and computing device |
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2021
- 2021-05-26 CN CN202121150758.5U patent/CN215345210U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115696737A (en) * | 2022-11-01 | 2023-02-03 | 超聚变数字技术有限公司 | Circuit board and computing device |
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