A backplane connector base with improved differential impedance and insertion loss

Abstract

The present invention discloses a backplane connector base for improving differential impedance and insertion loss, characterized in that it comprises: a base, and side wings arranged on both sides of the base and connected to the base, the base is provided with a plurality of differential pair combination units distributed in an array, the inner sides of the two side wings are respectively provided with positioning grooves, and the differential pair combination units are provided with air holes; due to the adoption of an air region structure and the use of the low dielectric constant and dissipation coefficient of air, the connectors on the connector base of the present invention have smaller electromagnetic coupling, thereby reducing the differential impedance between differential lines and reducing the insertion loss.

Description

Technical Field

[0001] The invention belongs to the technical field of electric connectors, and in particular relates to a backplane connector base for improving differential impedance and insertion loss in a high-density, high-speed digital communication connector. Background Art

[0002] In the era of the booming development of 5G (fifth generation mobile communication technology), IOT, big data, cloud, smart driving, smart medical care, smart home, etc., the data transmission rate requirements for various systems and equipment used in high-speed digital communications are getting higher and higher. High-speed digital communication backplane connectors are important basic components of high-speed communication systems and equipment. The signal integrity performance of this connector seriously affects the performance of high-speed digital communication systems and equipment. At present, the single-channel 5Gbps transmission rate backplane connector can no longer meet the requirements of high-speed digital communication systems and equipment for high-speed data transmission rates. Instead, the single-channel transmission rate of the backplane connector is required to reach 10Gbps, 28Gpbs, and then 56Gbps, 122Gbps or even higher.

[0003] However, most of the single-channel high-speed data transmission rates of domestic backplane connectors are below 28Gpbs. Therefore, it is very important and necessary to study the backplane connector and its structure and improve the high-speed data transmission rate of the backplane connector. We analyzed and studied the existing backplane connectors, and by utilizing the physical properties of air with low dielectric constant and dissipation coefficient, improved and optimized a backplane connector base that improves differential impedance and insertion loss, thereby improving the differential impedance and insertion loss of the high-speed backplane connector, thereby improving the single-channel transmission rate of the high-speed data communication backplane connector. Summary of the invention

[0004] The purpose of the present invention is to improve the transmission rate of a high-speed data communication backplane connector by using a backplane connector base that improves differential impedance and insertion loss. The differential impedance and insertion loss of the connector formed by the base can be improved.

[0005] In order to achieve the above object, the present invention adopts the following technical solution:

[0006] A backplane connector base for improving differential impedance and insertion loss comprises: a base, and side wings arranged on both sides of the base and connected to the base, the base is provided with a plurality of differential pair combination units distributed in an array, the inner sides of the two side wings are respectively provided with positioning grooves, and the differential pair combination units are provided with air holes.

[0007] In the above technical solution, the differential pair combination unit includes a U-shaped first hole for connecting the loop terminal, and a second hole for connecting the differential line group, and the air hole is arranged between the first hole and the second hole.

[0008] In the above technical solution, the second hole is arranged in the U-shaped surface of the first hole, and the air hole is arranged at the bottom of the U-shaped surface.

[0009] In the above technical solution, the air hole is connected to the first hole.

[0010] In the above technical solution, there are two second holes and air holes distributed in an axisymmetric manner, and one second hole corresponds to one air hole.

[0011] In the present invention, in order to achieve the purpose of improving differential impedance and insertion loss, an empty third hole is provided between the bottom edge of the first hole and the second hole; the third hole is connected to the first hole; utilizing the material properties of air having a low dielectric constant and a small dissipation coefficient, no connector is inserted in the third hole, making it an air area. Because of the existence of the air area, which has a low dielectric constant and a dissipation coefficient, the coupling between the signal metal conductor differential pair path and the signal U-shaped metal return path is weakened, thereby improving the differential impedance and the insertion loss at the same time.

[0012] In the present invention, in order to achieve the purpose of smooth intermate between connectors, a number of positioning grooves are respectively provided on the inner sides of the two side wings, and the two side wings are symmetrically connected to two symmetrical side edges on the base, and the positioning grooves on one side wing are arranged incorrectly with the positioning grooves on the other side wing.

[0013] In the present invention, the purpose of high-density, high-speed data transmission is achieved, the differential pair combination units are distributed in an array on the base, and the position distribution of the odd-numbered columns of the differential pair combination unit columns is staggered with the position distribution of the even-numbered columns.

[0014] In summary, due to the adoption of the above technical solution, the beneficial effects of the present invention are:

[0015] By adopting the air region structure and utilizing the low dielectric constant and dissipation coefficient of air, the connectors on the connector base of the present invention have smaller electromagnetic coupling, which reduces the differential impedance between differential lines and reduces the insertion loss. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] The present invention will now be described by way of example with reference to the accompanying drawings, in which:

[0017] Figure 1 , Figure 2 is a schematic diagram of the base;

[0018] Figure 3It is a schematic diagram;

[0019] Figure 4 is a schematic diagram of an array of differential pair combination units;

[0020] Figure 5 It is a schematic diagram of a differential pair combination unit with signal terminals and U-shaped loop terminals installed;

[0021] Among them: 1 is a base, 11 is a base, 12 is a differential pair combination unit, 13 and 14 are side wings, 121 and 122 are differential pair holes, 123 is a U-shaped hole, 1231 and 1232 are air holes, 131, 132, 141 and 142 are positioning grooves, 2 is a signal terminal, 3 is a U-shaped loop terminal, and 12a and 12b are differential pair combination unit array groups. DETAILED DESCRIPTION

[0022] All features disclosed in this specification, or steps in all methods or processes disclosed, except mutually exclusive features and / or steps, can be combined in any manner.

[0023] Any feature disclosed in this specification (including any additional claims, abstract and drawings), unless otherwise stated, may be replaced by other equivalent or alternative features with similar purposes. That is, unless otherwise stated, each feature is only an example of a series of equivalent or similar features.

[0024] Embodiment 1

[0025] like Figure 1 and Figure 2 As shown, this embodiment is a U-shaped insulator, including a base 11 with an array of differential pair combination units 12, a side wing 13 with a guide and positioning, and another side wing 14 with a guide and positioning. The two side wings are used for guidance and positioning in the non-insertion direction when the connector is mated. In this embodiment, the side wings 13 and 14 are fixedly connected to the base 11 as an integral structure.

[0026] like Figure 3 As shown, the differential pair combination unit 12 in this embodiment includes: a first hole for connecting with the U-shaped loop terminal 3, the first hole is a U-shaped hole 123; a second hole for connecting the differential signal connector, the second hole is two differential pair holes 121, 122; a third hole for vacancy is provided between the bottom edge of the first hole and the second hole, the third hole is an air hole 1231, 1232, and the third hole is connected to the first hole.

[0027] In this embodiment, the two differential pair holes 121 and 122 are symmetrically distributed on the U-shaped surface in the U-shaped hole, and one differential hole corresponds to one air hole. All structures in the entire differential pair combination unit 12 are symmetrically distributed about the central axis.

[0028] like Figure 4 As described above, in this embodiment, a plurality of differential pair combination units 12 are distributed in an array on the base 11, and the differential pair combination units 12 are misaligned with each other, for example, the differential pair combination unit array group 12a of the odd columns is misaligned with the differential pair combination unit array group 12b of the even columns.

[0029] In this embodiment, if Figure 1 and Figure 2 As shown, a plurality of positioning grooves 131, 132, 141, 142 are provided on the inner side surfaces of the two symmetrical side wings, and the positioning grooves on the two side wings are staggered with each other, so that the base has the functions of guiding and positioning when plugging with the connector.

[0030] like Figure 5 , which is a schematic diagram of docking between the present embodiment and the connector. When the differential signal terminal 2 is connected to the second holes 121, 122, and the U-shaped loop terminal 3 is connected to the first hole 123, since no connection is made in the third holes 1231, 1232, an air wall is formed between the differential signal terminal 2 and the U-shaped loop terminal 3, thereby reducing the coupling between the signal ends, improving the differential impedance, and reducing the insertion loss.

[0031] The present invention is not limited to the above-mentioned specific embodiments, but extends to any new features or any new combination disclosed in this specification, as well as any new method or process steps or any new combination disclosed.

Claims

1. A backplane connector base for improving differential impedance and insertion loss, characterized in that include: A base, and side wings arranged on both sides of the base and connected to the base, the inner sides of the two side wings are respectively provided with positioning grooves, the base is provided with a plurality of differential pair combination units distributed in an array, the differential pair combination unit includes a U-shaped first hole for connecting a loop terminal, and a second hole for connecting a differential line group, and an air hole connected to the first hole is arranged between the first hole and the second hole in the differential pair combination unit; When the differential signal terminal is connected to the second hole and the U-shaped loop terminal is connected to the first hole, no connection is made in the air hole, so that an air wall is formed between the differential signal terminal and the U-shaped loop terminal.

2. A backplane connector base for improving differential impedance and insertion loss according to claim 1, characterized in that: The second hole is arranged in the U-shaped surface of the first hole, and the air hole is arranged at the bottom of the U-shaped surface.

3. A backplane connector base for improving differential impedance and insertion loss according to claim 1 or 2, characterized in that: It comprises two second holes which are axially symmetrically distributed, and one second hole corresponds to one air hole.

4. A backplane connector base for improving differential impedance and insertion loss according to claim 1, characterized in that: The differential pair combination units are distributed in an array on the base, and the positions of the odd-numbered columns of the differential pair combination units are distributed in an array with the positions of the even-numbered columns. The positions of the columns are offset from each other.

5. A backplane connector base for improving differential impedance and insertion loss according to claim 1, characterized in that: The base is provided with side wings connected to the base on two symmetrical sides, and the opposite surfaces of the two side wings are respectively provided with Several positioning slots.

6. A backplane connector base for improving differential impedance and insertion loss according to claim 5, characterized in that: The positioning groove on one of the side wings is arranged in a staggered manner with respect to the positioning groove on the other side wing.

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