CN-121983820-A - High-speed connector

CN121983820ACN 121983820 ACN121983820 ACN 121983820ACN-121983820-A

Abstract

The invention discloses a high-speed connector, which relates to the technical field of high-speed connectors and comprises a shielding shell, a conductive terminal and two circuit substrates, wherein a containing cavity penetrating along a first direction is formed in the shielding shell, the two circuit substrates are respectively arranged at two opposite sides of the shielding shell along the first direction and seal two ends of the containing cavity, the conductive terminal is arranged in the containing cavity and extends along the first direction, the two ends of the conductive terminal are respectively and electrically connected with the corresponding circuit substrates, at least one communication structure is arranged on the peripheral side wall of the shielding shell, and the communication structure is used for communicating the containing cavity with an external space. According to the technical scheme, at least one communication structure for communicating the accommodating cavity with the external space is arranged on the peripheral side wall of the shielding shell, so that the signal crosstalk of the high-speed connector is reduced, and meanwhile, the insertion loss performance is improved.

Inventors

XIAO LAN
DENG LONGBING
TAN TIANLE
LIU XIAOYANG
LI DONGLIN
XIE LEI

Assignees

深圳市拓普联科技术股份有限公司

Dates

Publication Date: 20260505
Application Date: 20260309

Claims (10)

1. A high-speed connector, comprising: a shielding shell, wherein an accommodating cavity penetrating along a first direction is formed in the shielding shell; the two circuit substrates are respectively arranged at two opposite sides of the shielding shell along the first direction and close two ends of the accommodating cavity; The conductive terminals are arranged in the accommodating cavity, extend along the first direction, and are respectively and electrically connected with the corresponding circuit substrates at two ends; The shielding shell is characterized in that at least one communication structure is arranged on the peripheral side wall of the shielding shell, and the containing cavity is communicated with the external space through the communication structure.
2. The high-speed connector of claim 1, wherein the communication structure comprises at least one of a notch, a through hole, and a slit formed on a peripheral side wall of the shield case.
3. The high-speed connector according to claim 1, wherein a plurality of the communication structures are provided, the plurality of the communication structures being spaced apart along the circumferential direction and/or the first direction of the shield case.
4. The high-speed connector according to claim 1, wherein the shield shell includes two first side walls distributed in a second direction and two second side walls distributed in a third direction, the first direction, the second direction, and the third direction are perpendicular to each other, the communication structures provided on the two first side walls are symmetrical with respect to a center plane of the shield shell in the second direction, and/or the communication structures provided on the two second side walls are symmetrical with respect to a center plane of the shield shell in the third direction.
5. The high-speed connector as recited in claim 4, wherein each of said first side walls is provided with at least two of said communication structures, at least two of said communication structures are notches formed in said first side walls, and at least two of said notches are located at respective ends of said first side walls along said first direction.
6. The high-speed connector of claim 4, wherein the sum of the extension dimensions of the communication structures on each of the first side walls in the first direction is no greater than two-thirds of the extension dimensions of the first side walls in the first direction.
7. The high-speed connector of claim 4, wherein the sum of the extension dimensions of the communication structures on each of the first side walls in the third direction is greater than two-thirds of the extension dimensions of the first side walls in the third direction.
8. The high-speed connector of claim 1, further comprising an insulating support including a first mounting portion disposed within the receiving cavity, the first mounting portion for securing the conductive terminal.
9. The high-speed connector of claim 8, wherein the insulating support further comprises a second mounting portion disposed around the first mounting portion, a mounting structure being formed between the second mounting portion and the first mounting portion for securing the shield shell.
10. The high-speed connector according to claim 1, wherein the shield case and the internally mounted conductive terminals constitute a signal transmission unit, the signal transmission unit being provided in plurality and located between the two circuit substrates; And/or the conductive terminal is a probe, an elastic contact or a transmission line conductor.

Description

High-speed connector Technical Field The invention relates to the technical field of high-speed connectors, in particular to a high-speed connector. Background In high density board-to-board high speed connectors operating at frequencies of 56 GHz and above, the signal path spacing is very small, resulting in significant enhancement of electromagnetic coupling between adjacent paths, and crosstalk is a major factor affecting signal integrity. To suppress crosstalk, a common approach is to enhance the shielding effect, for example, to use a metal cavity structure instead of the conventional ground pins. The metal cavity can provide more continuous, effective electromagnetic isolation than discrete ground pins, thereby reducing the level of crosstalk. However, during the actual or theoretical modeling process, it was found that when the metal cavity is mated with the printed circuit board on both sides of the connector, an approximately closed metal cavity structure tends to form. Unlike open planar shielding structures, such closed cavities tend to excite internal electromagnetic resonance modes at high frequencies. These resonances can create additional reflections and energy dissipation within the operating band, resulting in significant degradation of the insertion loss of the signal transmission. Disclosure of Invention The main objective of the present invention is to provide a high-speed connector, which aims to reduce signal crosstalk and improve insertion loss performance. In order to achieve the above object, the present invention provides a high-speed connector comprising: a shielding shell, wherein an accommodating cavity penetrating along a first direction is formed in the shielding shell; the two circuit substrates are respectively arranged at two opposite sides of the shielding shell along the first direction and close two ends of the accommodating cavity; The conductive terminals are arranged in the accommodating cavity, extend along the first direction, and are respectively and electrically connected with the corresponding circuit substrates at two ends; The shielding shell is characterized in that at least one communication structure is arranged on the peripheral side wall of the shielding shell, and the containing cavity is communicated with the external space through the communication structure. In an embodiment, the communication structure includes at least one of a notch, a through hole, and a slit formed on a peripheral side wall of the shield case. In an embodiment, the communication structure is provided in a plurality, and the plurality of communication structures are distributed at intervals along the circumferential direction and/or the first direction of the shielding shell. In an embodiment, the shielding shell comprises two first side walls distributed along a second direction and two second side walls distributed along a third direction, the first direction, the second direction and the third direction are mutually perpendicular, the communication structures arranged on the two first side walls are symmetrical with respect to a central plane of the shielding shell in the second direction, and/or the communication structures arranged on the two second side walls are symmetrical with respect to a central plane of the shielding shell in the third direction. In an embodiment, each of the first side walls is provided with at least two communication structures, the at least two communication structures are notches formed on the first side wall, and the at least two notches are respectively located at two ends of the first side wall along the first direction. In an embodiment, the sum of the extension dimensions of the communication structures on each of the first side walls in the first direction is not more than two-thirds of the extension dimensions of the first side walls in the first direction. In an embodiment, the sum of the extension dimensions of the communication structures on each of the first side walls in the third direction is greater than two-thirds of the extension dimensions of the first side walls in the third direction. In an embodiment, the high-speed connector further comprises an insulating support body, wherein the insulating support body comprises a first mounting part arranged in the accommodating cavity, and the first mounting part is used for fixing the conductive terminal. In an embodiment, the insulating support further includes a second mounting portion disposed around the first mounting portion, and a mounting structure for fixing the shield case is formed between the second mounting portion and the first mounting portion. In one embodiment, the shielding shell and the internally mounted conductive terminals form a signal transmission unit, and the signal transmission unit is provided with a plurality of signal transmission units and is positioned between the two circuit substrates. In one embodiment, the conductive terminal is a probe, a spring contact,