Analysis and Research of USB 3.1 Type-C Signal Integrity

With the rapid development of electronic information, the requirements for circuit systems to transmit power and information have become more complex, and electrical connectors have become more important. However, in the process of realizing high-speed signal transmission, electrical connectors face many challenges, such as Impedance discontinuity, crosstalk and return loss. Therefore, solving signal integrity problems has become a very important research direction in the field of modern electronic engineering.

USB 3.1 Type-CIt is a commonly used high-speed electrical connector, so it is selected as the research object in this study. The research combines the characteristics of the connector with the basic theory of signal integrity, and analyzes the data results obtained by electromagnetic simulation To find out the factors that affect signal integrity. Next, the researchers modified and optimized the structure of the connector so that the electrical connector can meet the requirements of high-speed circuit signal transmission. As a result, the reliability of the simulation results was verified by experimental tests and the feasibility of the optimization scheme.

Specifically, the researchers first used the 3D modeling software Pro\/E to model the high-speed electrical connector in 3D, and analyzed the characteristics of the model to delete irrelevant parts to obtain a simplified model. After that, the established 3D The three-dimensional model was imported into HFSS for simulation calculation, and then the signal integrity of the electrical connector was evaluated by analyzing the theoretical knowledge of signal integrity such as TDR and S parameters. Through the above analysis, the researchers found the signal integrity of the electrical connector. Poor positions mainly refer to the Pin in the male head of the high-speed electrical connector, the gold finger on the female head, and the cavity at the connection between the male head and the female head. Subsequently, the researchers analyzed and adjusted the structures of these places , and continuously adjusted and optimized through simulation calculations to improve the signal integrity of the electrical connector. Through experimental tests, the results consistent with the simulation data were obtained, confirming the reliability of the simulation results and the feasibility of the optimization scheme.

Through this study, we can draw some conclusions. First, the signal integrity of electrical connectors is very important, especially in high-speed circuits. Second, the influence of impedance discontinuity and crosstalk can be found out more accurately through simulation calculations. Factors. Then, through comprehensive consideration of design, structure and adjustment, the signal integrity of electrical connectors can be effectively improved to meet the needs of high-speed circuit signal transmission.