High-speed signal cable

Abstract

The utility model provides a high-speed signal cable which comprises an adapter plate, an AC capacitor is arranged on the adapter plate, and the AC capacitor is arranged at one end of a connector in the TX direction on the adapter plate; and the cable is connected with the adapter plate. The AC capacitor is placed at one end of the connector in the TX direction on the adapter plate, so that the layout of the single board connected with the cable is wider, the surface wiring length of the single board in the TX direction is effectively reduced, the distance between the TX signal hole and the RX signal hole can be increased, the signal interference is reduced, and the signal quality is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of computers, and particularly relates to a high-speed signal cable. Background Art

[0002] High-speed signals usually refer to those signals used in high-speed data transmission applications, which can transmit a large amount of data at a very high rate. High-speed signal technology is very important in computers, servers, network devices and other high-performance electronic systems. These high-speed signal technologies are all committed to providing higher data transmission rates and lower latency to meet the growing demand for performance in modern computing systems. High-speed signals include PCIE5.0, PCIE6.0, UPI, etc. In order to ensure the quality of signals during transmission, it is usually necessary to add AC coupling capacitors (AC capacitors) in the signal link. Their main function is to remove the DC component in the signal while allowing the AC signal to pass through. This approach is very common in high-speed signal transmission, especially when hardware systems are interconnected across boards. However, this will affect the layout of single-board devices. As the density of the single board increases, the spacing between cable connectors becomes smaller and smaller. The AC coupling capacitors and Fan-out (leads) in the TX direction obviously occupy more PCB space than in the RX direction. Due to the presence of AC capacitors in the TX direction, the surface traces of the TX direction on the PCB are significantly longer than those in the RX direction. Since the signal attenuation on the surface traces is relatively large, the signal quality in the TX direction will be worse than that in the RX direction. The TX and RX signal holes are adjacent, and there is significant interference between the signal holes. Due to the presence of AC capacitors, it is difficult to increase the spacing between the TX and RX signal holes. Summary of the Utility Model

[0003] In view of this, the purpose of the utility model is to provide a high-speed signal cable, aiming to make the layout of the single board (PCB) connected to the cable more spacious and improve the signal quality.

[0004] The technical solution adopted by the utility model to solve the above technical problems is as follows:

[0005] The utility model provides a high-speed signal cable, including:

[0006] An adapter board, on which an AC capacitor is provided, and the AC capacitor is arranged at one end of the connector in the TX direction on the adapter board;

[0007] A cable, which is connected to the adapter board.

[0008] In some embodiments, the signal is transmitted to the cable after being processed by the AC capacitor.

[0009] In some embodiments, the RX direction of the adapter board is connected to the signal pins of the single board through a connector.

[0010] In some embodiments, the routing of the cable adapter board is carried out on the surface layer, and the AC capacitor is mounted on the surface layer of the adapter board.

[0011] In some embodiments, one end of the AC capacitor is connected to the output end of the signal source of the adapter board, and the other end of the AC capacitor is connected to the gold finger pin in the TX direction on the adapter board.

[0012] The high-speed signal cable provided by the embodiment of the present invention optimizes the layout of the AC capacitor in high-speed signal transmission, and solves the problems of PCB space limitation and signal quality degradation caused by the AC capacitor in the traditional design. By placing the AC capacitor at one end of the connector in the TX direction on the adapter board, the layout space is made more spacious, effectively reducing the surface layer routing length in the TX direction of the single board. The distance between the TX and RX signal holes can be increased, reducing signal attenuation and improving signal quality. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 is a schematic structural diagram of an embodiment of the present invention;

[0014] Figure 2 is a schematic framework diagram of an embodiment of the present invention;

[0015] Description of the reference numerals: 100, single board; 110, signal pin; 120, connection line; 200, adapter board; 210, AC capacitor; 300, cable. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0016] The general idea of the technical solution provided by the present invention is as follows:

[0017] Please refer to Figure 1 and Figure 2 , the present invention provides a high-speed signal cable, including:

[0018] An adapter board 200, on which an AC capacitor 210 is provided, and the AC capacitor 210 is arranged at one end of the connector in the TX direction on the adapter board 200;

[0019] A cable 300, which is connected to the adapter board 200.

[0020] It can be understood that the AC capacitor 210, whose full name is AC Coupling Capacitor, is a capacitor used for AC signal transmission. It plays a role in blocking the DC component while allowing the AC signal to pass through in the circuit. In high-speed signal transmission systems such as PCIe and UPI, the AC capacitor 210 is widely used in the signal link to ensure the correct transmission and reception of signals. In high-speed signal transmission, some electronic components (such as receivers) may be sensitive to DC bias or need to work without DC components. The AC capacitor 210 allows high-frequency AC signals to pass through while blocking the DC component through its capacitance characteristics. In this way, it can remove the DC component in the signal without changing the frequency content of the signal. By placing the AC capacitor 210 at one end of the connector in the TX direction on the adapter board 200, the surface trace length in the TX direction of the single board is effectively reduced, thereby reducing signal attenuation and improving signal quality.

[0021] To make the objectives, technical solutions, and advantages of the embodiments of the present utility model clearer, the technical solutions in the embodiments of the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the embodiments of the present utility model. Apparently, the described embodiments are some, but not all, of the embodiments of the present utility model. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present utility model without creative efforts shall fall within the protection scope of the present utility model.

[0022] Please refer to Figure 1 , after being processed by the AC capacitor 210, the signal is transmitted to the cable 300. The AC capacitor 210 is directly connected to the signal source output terminal and the TX-direction connector, ensuring that the signal can be quickly and accurately transmitted to the cable 300 after AC coupling processing, thus meeting the requirements of high-speed data transmission.

[0023] Please refer to Figure 1 , the RX direction of the adapter board 200 is connected to the signal pin 110 of the single board 100 through a connector and a connection wire 120, Figure 1 The shown connection method is a horizontal connection method, and other connection methods such as vertical insertion can also be selected.

[0024] Please refer to Figure 1 , the AC capacitor 210 is arranged on the TOP layer or the BOTTOM layer of the adapter board 200. According to the signal definition, if the TX signal is on the TOP layer, the AC capacitor 210 is placed on the TOP layer; if the TX signal is on the Bottom layer, the AC capacitor 210 is placed on the Bottom layer.

[0025] Please refer to Figure 1, the routing of the cable 300 on the adapter board 200 is carried out on the surface layer, and the AC capacitor 210 is installed on the surface layer of the adapter board 200. In circuit board design, a via is a hole connecting conductive paths between different layers. If the AC capacitors 210 are installed on the surface layer and do not need to be connected to other layers through vias, then they will not increase the number of vias.

[0026] Please refer to Figure 1 , one end of the AC capacitor 210 is connected to the output end of the signal source of the adapter board 200, and the other end of the AC capacitor 210 is connected to the gold finger pin in the TX direction on the adapter board 200.

[0027] Although the preferred embodiments of the present invention have been described, those skilled in the art can make additional changes and modifications to these embodiments once they learn the basic creative concept. Therefore, the appended claims are intended to be interpreted to include the preferred embodiments and all changes and modifications falling within the scope of the present invention.

[0028] Obviously, those skilled in the art can make various changes and modifications to the embodiments of the present invention without departing from the spirit and scope of the embodiments of the present invention. Thus, if these modifications and variations of the embodiments of the present invention fall within the scope of the claims of the present invention and their equivalent technologies, the present invention also intends to include these changes and modifications.

Claims

1. A high-speed signal cable, characterized in that, Including: A transfer board, on which an AC capacitor is provided, and the AC capacitor is arranged at one end of a connector in the TX direction on the transfer board; A cable, which is connected to the transfer board.

2. A high-speed signal cable according to claim 1, characterized in that, The signal is transmitted to the cable after being processed by the AC capacitor.

3. A high-speed signal cable according to claim 1, characterized in that, The RX direction of the transfer board is connected to the signal pin of a single board through a connector.

4. A high-speed signal cable according to claim 1, characterized in that, The AC capacitor is arranged on the TOP layer or the BOTTOM layer of the transfer board.

5. A high-speed signal cable according to claim 1, characterized in that, One end of the AC capacitor is connected to the output end of the signal source of the transfer board, and the other end of the AC capacitor is connected to the gold finger pin in the TX direction on the transfer board.

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