Power sum crosstalk

This is the most popular method for evaluating multiple crosstalk. In cases where crosstalk interference occurs from multiple lines, the sum of the crosstalk power from each line is taken to measure the degree of crosstalk. The sum calculation is done back to power, but the final unit is dB like normal crosstalk. When multiple crosstalk is taken into account, each phase has a problem, so it is decided to evaluate the power sum in the frequency domain without adding the voltage.