High speed differential terminal structure of a side-mounted USB type-c connector

Abstract

The utility model discloses a kind of high-speed differential terminal structures of side vertical USB Type-C connector, the high-speed differential terminal structure includes differential signal terminal, the differential signal terminal at least includes first high-speed differential terminal group and second high-speed differential terminal group, wherein first high-speed differential terminal group is relatively flat along the signal transmission path of connector height direction, and its equivalent electrical path length is taken as reference path;Second high-speed differential terminal group is provided with the bending compensation structure extending along Z axis direction in its signal transmission path middle part or the position close to welding end, so that the equivalent electrical path length of second high-speed differential terminal group is increased relative to first high-speed differential terminal group, to compensate the problem that path length is not consistent between different high-speed differential terminal groups due to space arrangement difference. It is favorable to improve the consistency of multi-channel high-speed differential signal, improve the high-speed signal transmission performance of side vertical USB Type-C connector.

Description

Technical Field

[0001] This utility model relates to the field of connectors, specifically to a high-speed differential terminal structure for a side-mounted USB Type-C connector. Background Technology

[0002] As electronic devices continue to evolve towards higher speeds, smaller sizes, and higher integration, the USB Type-C interface, with its advantages such as reversible insertion, multiple protocol multiplexing, and high power supply, has been widely used in computers, communication terminals, and consumer electronics products. In particular, with the gradual promotion of high-speed interface standards such as USB4, USB4 Gen2×2, USB4 Gen3×2, and Thunderbolt, the high-speed differential signal channels inside the USB Type-C connector are placing higher demands on signal integrity.

[0003] Under high-speed signal transmission conditions, the structure, wiring path, and equivalent electrical length of the high-speed differential terminals inside the connector directly affect insertion loss, differential impedance continuity, and phase consistency of the differential signal. When there are differences in the electrical path length between high-speed differential channels, problems such as inconsistent insertion loss, phase shift, and differential-to-common-mode or common-mode-to-differential conversion can easily occur at high frequencies, leading to a decrease in the high-speed performance of the system and even failure to meet specification requirements during compliance testing.

[0004] In the existing technology, due to the installation direction and spatial structure limitations of the side-mounted USB Type-C connector, the high-speed differential terminals are usually arranged along the height direction of the connector. The different spatial levels of the different high-speed differential terminals inside the connector are different, resulting in the signal transmission path of some high-speed differential terminals being relatively short, while the path of some high-speed differential terminals is relatively long. This leads to the problem of inconsistent electrical path lengths of multiple high-speed differential terminals within the same connector.

[0005] To address the aforementioned issues, existing technologies typically improve high-speed signal consistency by compensating for the routing of high-speed differential signals at the circuit board end or by adjusting system-level parameters. However, these methods primarily rely on external circuit design and cannot effectively adjust the electrical paths of high-speed differential terminals at the connector body structure level. Furthermore, the compensation effect is difficult to maintain stably when the matching relationship between the connector and the circuit board changes. Utility Model Content

[0006] To address the aforementioned issues, this invention provides a high-speed differential terminal structure for a side-mounted USB Type-C connector. Without significantly increasing the connector size or relying on additional compensation from the circuit board, the design of the internal high-speed differential terminal structure of the side-mounted USB Type-C connector is optimized to improve the electrical path consistency between different high-speed differential channels.

[0007] This utility model is achieved through the following technical solution: a high-speed differential terminal structure for a side-mounted USB Type-C connector, including differential signal terminals, wherein the differential signal terminals include at least a first high-speed differential terminal group and a second high-speed differential terminal group. The signal transmission path of the first high-speed differential terminal group along the connector height direction is relatively straight, and its equivalent electrical path length is used as the reference path. The second high-speed differential terminal group has a bending compensation structure extending along the Z-axis in the middle of the signal transmission path or near the welding end, so that the equivalent electrical path length of the second high-speed differential terminal group is increased relative to the first high-speed differential terminal group, in order to compensate for the inconsistency in path length between different high-speed differential terminal groups due to differences in spatial arrangement.

[0008] As a preferred technical solution, the bending compensation structure is a local three-dimensional bending structure, which causes the high-speed differential terminal to undergo at least one height change in the Z-axis direction.

[0009] As a preferred technical solution, the bending compensation structure is disposed in the path area of ​​the high-speed differential terminal from the terminal contact part to the welding part.

[0010] As a preferred technical solution, the two differential terminals of the second high-speed differential terminal group have the same or mirror-symmetrical bending compensation structure to maintain the path symmetry inside the differential pair.

[0011] As a preferred technical solution, the bending compensation structure achieves fine adjustment of the equivalent electrical path length by adjusting at least one of the bending height, bending length, or number of bends.

[0012] As a preferred technical solution, the first high-speed differential terminal group and the second high-speed differential terminal group correspond to different high-speed signal channels.

[0013] As a preferred technical solution, the first high-speed differential terminal group is TX1± and RX1±, and the second high-speed differential terminal group is TX2± and RX2±.

[0014] As a preferred technical solution, the bending compensation structure makes the insertion loss characteristics of the second high-speed differential terminal group in the high-frequency band consistent with those of the first high-speed differential terminal group.

[0015] As a preferred technical solution, the bending compensation structure is used to reduce the differential-to-common-mode or common-to-differential conversion generated during the transmission of high-speed differential signals.

[0016] The beneficial effects of this utility model are as follows: This utility model divides the high-speed differential terminals into a first high-speed differential terminal group and a second high-speed differential terminal group, and sets a bending compensation structure extending along the Z-axis direction on the second high-speed differential terminal group, so that the equivalent electrical path length of different high-speed differential terminal groups is compensated, thereby improving the problem of inconsistent path length caused by differences in terminal space arrangement.

[0017] Adjusting the high-speed differential signal path at the internal terminal structure level of the connector helps improve the consistency of multi-channel high-speed differential signals during transmission and reduces the risk of phase mismatch between high-speed differential channels.

[0018] The bending compensation structure is located in the middle of the signal transmission path of the high-speed differential terminal or near the soldering end. Without significantly changing the overall structural dimensions of the connector, it can effectively adjust the electrical path of the high-speed differential terminal and is suitable for space-constrained side-mounted USB Type-C connector structures.

[0019] By making the differential terminals in the second high-speed differential terminal group have the same or mirror-symmetrical bending compensation structure, it is beneficial to maintain the path symmetry inside the differential pair, thereby suppressing differential-common mode or common-mode-differential conversion that may occur during high-speed signal transmission. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 This is a cross-sectional schematic diagram of the present invention; Figure 2 This is a schematic diagram of the overall structure of this utility model. Detailed Implementation

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

[0023] Any feature disclosed in this specification (including any appended claims, abstract, and drawings) may be replaced by other equivalent or similar features, unless specifically stated otherwise. That is, unless specifically stated otherwise, each feature is merely one example of a series of equivalent or similar features.

[0024] like Figure 1 and Figure 2 As shown, in this embodiment, the side-mounted USB Type-C connector includes differential signal terminals disposed within the connector body. These differential signal terminals are used to transmit high-speed differential signals between the connector and an external circuit board. The differential signal terminals 1 include at least a first high-speed differential terminal group and a second high-speed differential terminal group. The two groups of high-speed differential terminals are arranged inside the connector along the connector's height direction. However, due to the different structure of the side-mounted connector and the different terminal arrangement levels, the two groups of high-speed differential terminals differ in their spatial position and signal transmission path.

[0025] In this design, the signal transmission path of the first high-speed differential terminal group is relatively straight, with its equivalent electrical path length within the connector serving as the reference path. This first high-speed differential terminal group does not have any additional path compensation structure within the connector; its signal transitions directly from the terminal contact portion through the terminal body to the soldering portion, completing the electrical connection with the circuit board.

[0026] The second high-speed differential terminal group is located at a different spatial level within the connector compared to the first high-speed differential terminal group, and its signal transmission path has a relatively short equivalent electrical path length without compensation. To compensate for the inconsistency in path length between the first and second high-speed differential terminal groups caused by differences in spatial arrangement, in this embodiment, the second high-speed differential terminal group is provided with a bending compensation structure in the middle of its signal transmission path or near the soldering end.

[0027] The bending compensation structure 2 extends along the Z-axis and is a local three-dimensional bending structure, causing the second high-speed differential terminal group to form at least one height change in the Z-axis direction. Through this bending compensation structure, the signal transmission path of the second high-speed differential terminal group generates an additional path length inside the connector, thereby increasing its equivalent electrical path length relative to the first high-speed differential terminal group and approaching the reference path length of the first high-speed differential terminal group.

[0028] In terms of specific structure, the bending compensation structure is located in the path area where the high-speed differential terminal transitions from the terminal contact portion to the soldering portion. This position effectively increases the signal transmission path length without adversely affecting the mating reliability of the terminal contact area, and also does not interfere with the soldering structure between the soldering portion and the circuit board. This facilitates electrical performance compensation while maintaining the overall structural stability of the connector.

[0029] In this embodiment, the two differential terminals in the second high-speed differential terminal group adopt the same or mirror-symmetrical bending compensation structure, so that the two signal paths inside the differential pair are consistent in structural shape and path length, which helps to maintain the symmetry of the differential signal and reduce the risk of differential-to-common mode or common-to-differential conversion during the transmission of high-speed differential signals.

[0030] Furthermore, the bending compensation structure can achieve fine adjustment of the equivalent electrical path length of the second high-speed differential terminal group by adjusting at least one of the bending height, bending length, or number of bends. Under different application requirements or different connector structure conditions, the specific shape of the bending compensation structure can be designed accordingly based on the actual high-speed signal performance requirements to obtain a more ideal multi-channel high-speed signal consistency.

[0031] In one specific application, a first high-speed differential terminal group corresponds to a first high-speed signal channel, and a second high-speed differential terminal group corresponds to a second high-speed signal channel. Preferably, the first high-speed differential terminal group consists of TX1± and RX1±, and the second high-speed differential terminal group consists of TX2± and RX2±. By providing bending compensation structures on the high-speed differential terminals corresponding to TX2± and RX2±, their insertion loss characteristics in the high-frequency band are made more consistent with those of the high-speed differential terminal groups corresponding to TX1± and RX1±, thereby improving the overall performance consistency of the multi-channel high-speed signals of the entire connector.

[0032] This implementation method does not require additional trace compensation on the circuit board end, and can adjust the path length of high-speed differential signals inside the connector body. This helps to reduce the differences in insertion loss and mode conversion problems caused by high-speed differential signals during transmission, and is suitable for side-mounted USB Type-C connector application scenarios with high requirements for high-speed performance.

[0033] The above description is merely a specific embodiment of this utility model, but the protection scope of this utility model is not limited thereto. Any changes or substitutions conceived without inventive effort should be included within the protection scope of this utility model. Therefore, the protection scope of this utility model should be determined by the scope defined in the claims.

Claims

1. A high-speed differential terminal structure for a side-mounted USB Type-C connector, characterized in that, The system includes differential signal terminals, which include at least a first high-speed differential terminal group and a second high-speed differential terminal group. The signal transmission path of the first high-speed differential terminal group along the connector height direction is relatively straight, and its equivalent electrical path length is used as the reference path. The second high-speed differential terminal group has a bending compensation structure extending along the Z-axis in the middle of the signal transmission path or near the welding end, so that the equivalent electrical path length of the second high-speed differential terminal group is increased relative to the first high-speed differential terminal group, in order to compensate for the inconsistency in path length between different high-speed differential terminal groups due to differences in spatial arrangement.

2. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The bending compensation structure is a local three-dimensional bending structure, which causes the high-speed differential terminal to undergo at least one height change in the Z-axis direction.

3. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The bending compensation structure is located in the path area of ​​the high-speed differential terminal from the terminal contact part to the welding part.

4. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The two differential terminals of the second high-speed differential terminal group have the same or mirror-symmetrical bending compensation structure to maintain the path symmetry inside the differential pair.

5. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The bending compensation structure achieves fine adjustment of the equivalent electrical path length by adjusting at least one of the bending height, bending length, or number of bends.

6. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The first high-speed differential terminal group and the second high-speed differential terminal group correspond to different high-speed signal channels.

7. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The first high-speed differential terminal group is TX1± and RX1±, and the second high-speed differential terminal group is TX2± and RX2±.

8. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The bending compensation structure makes the insertion loss characteristics of the second high-speed differential terminal group in the high-frequency band consistent with those of the first high-speed differential terminal group.

9. The high-speed differential terminal structure of the side-mounted USB Type-C connector according to claim 1, characterized in that: The bending compensation structure is used to reduce the differential-to-common-mode or common-to-differential conversion generated during the transmission of high-speed differential signals.

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