A circuit module for coupled transmission line channel transmission matrix (CTL-CTM) crosstalk cancellation is designed and simulated by using CMOS technology in a high-speed interconnection system. The module consists of an adder and a subtractor to realize analog addition and subtraction of digital signals. The adder is composed of CMOS transistor pair connected to an inverter at the next stage. The subtractor is composed of a current mirror as the load of CMOS differential pair. The crosstalk cancellation circuit module is simulated and verified by advanced design system (ADS) software. The designed adder and subtractor work well and have no significant difference with the ideal output, and the signal eye diagram recovered by the crosstalk cancellation circuit is of good quality, which solves the circuit implementation problem in the CTL-CTM crosstalk cancellation method.
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