Impedance conversion device for vehicle-mounted Gigabit Ethernet chip adaptive coaxial cable transmission

An impedance conversion device for vehicle-mounted gigabit Ethernet chip adaptive coaxial cable transmission, comprising:

• a first impedance loop, a cable wiring end of the first impedance loop is connected with a coaxial cable, and a chip wiring end of the first impedance loop is connected with a first signal output end of the vehicle-mounted gigabit Ethernet chip;
• a first chip resistor is connected between a first signal input end and the first signal output end of the vehicle-mounted gigabit Ethernet chip, and the sum of an impedance value of the first impedance loop and a resistance value of the first chip resistor is equal to an equivalent resistance value of the coaxial cable;
• and
• a second impedance loop, a cable wiring end of the second impedance loop is grounded, and a chip wiring end of the second impedance loop is connected with a second signal output end of the vehicle-mounted gigabit Ethernet chip.