Sine and cosine signals are applied to both ends of the resistor chain, and electrical signals with different amplitudes and phases can be obtained at the connection points of the resistor chain. Resistor chain phase subdivision is a widely used subdivision technology. It mainly realizes the subdivision of sine and cosine analog signals. Its working principle is to apply sine and cosine signals to both ends of the resistance chain. At the connection point of the resistance chain, the Electrical signals with different amplitudes and phases. After these signals are shaped and pulsed, several counting pulses can be obtained within one cycle of the sine and cosine signals to achieve subdivision.