Probe head system i.e. oscilloscope for detecting input signal, has transfer line transmitting input signal, where low and high frequency ranges of transmitted input signal are amplified by two different amplifiers

摘要

The system has a transfer line (Tp) transmitting an input signal (Vinp), and a first amplifier (A1) amplifying a low frequency range of the transmitted input signal, where a high frequency range of the input signal is amplified by a second amplifier (A2). Another transfer line transmits another input signal whose low frequency range is amplified by a third amplifier. High frequency range of the latter input signal is amplified by the second amplifier for the high frequency range of the former input signal. The first and third amplifiers exhibits a low impedance signal input.