Rectangular Industrial Plugs Increase Data Transmission Speed

Connector Insert increases data transmission speed
When data transmission speed increases, the impact of capacitance and impedance becomes more obvious. The signal on one terminal will crosstalk to the adjacent terminal and affect its signal integrity. In addition, ground capacitance reduces the impedance of high-speed signals, causing signal attenuation. The new serial PCI standard PCI Express has a maximum data transmission speed of 500MB in each direction at 2.5Gb, which greatly increases the signal speed that a single connector can transmit. In the past, high-speed signals were usually controlled by coaxial cables and coaxial connectors to control the impedance of the signal path. A similar concept is adopted in PCI Express, where each signal transmission terminal is separated from each other. Differential signal pairs can achieve this goal well because there are ground pins on one side of each differential signal pair to reduce crosstalk.

High-speed transmission is most widely used in backplane connectors, and connectors up to 10Gb/s use very sophisticated design technology. Usually the first layer is the open pin area to separate adjacent ground terminals. The next layer is the ground shield installed between rows. The top layer application will include a metal ground structure around each signal terminal (or differential signal pair, as shown in Figure 1). Such a C-type metal shield achieves the best combination of data transmission speed and signal integrity, making it an ideal connector for high-speed applications.