Electronic device for analysis of Ethernet signal in physical layer of international organization for standardization/open systems interconnection layer model, uncouples symmetric Ethernet transmission signal from high impedance signal

摘要

The symmetric Ethernet transmission signal (110) is uncoupled from a very high impedance signal in front of a transmitter. The transmission frequency, amplitude and phase shift of the Ethernet signal are determined by a measurement process and are taken into consideration in the subsequent process. An offset equal to the peak voltage is dynamically added to the Ethernet signal and fed to a rectifier circuit and integrated with the time constant in each case depending on the transmission frequency.