Signal connector having protrusion of insulating base

A signal connector, comprising:

• a terminal module sequentially comprising a first ground terminal, a first signal terminal, a second signal terminal, and a second ground terminal that are arranged in parallel;
• and
• an insulating base comprising a plug opening, wherein the terminal module is fixed at a connection opening, the insulating base comprises an inner surface, a protrusion is formed on the inner surface between the first signal terminal and the second signal terminal, the protrusion is configured to form a block between the first signal terminal and the second signal terminal, and at least a part of the inner surface between the first signal terminal and the first ground terminal is flat and has no protrusion formed therebetween;
• wherein each of the first ground terminal, the first signal terminal, the second signal terminal, and the second ground terminal comprises a fixing section, a movable section, and a contact section that are arranged in sequence, the fixing section is a part to fix with the insulating base, the contact section is a part to connect an external connector, and the movable section is a part to connect the fixing section and the contact section, wherein said inner surface comprises an inclined part, and a thickness of the inclined part is gradually increased along an extending direction of the fixing section, the movable section, and the contact section in a vertical direction,
• wherein the protrusion is at least formed between the movable section of the first signal terminal and the movable section of the second signal terminal;
• when the signal connector transmits a signal, the entire protrusion is buried in and between the first signal terminal and the second signal terminal, and a height of the protrusion along a horizontal direction is substantially between 30% and 70% of a height of the movable section of the first signal terminal along the horizontal direction.