03-30-2017, 11:00 AM
Shielded cables in this particular case do not have to be of particular impedance.
Impedance only matters when your transmission length becomes comparable or especially when it exceeds the wavelength at which point it is considered a resistor equal to the characteristic impedance as seen by the source; otherwise your cable acts as lumped capacitance/inductance as seen by the source, and your shield is there exactly for that - to provide shielding.
Impedance only matters when your transmission length becomes comparable or especially when it exceeds the wavelength at which point it is considered a resistor equal to the characteristic impedance as seen by the source; otherwise your cable acts as lumped capacitance/inductance as seen by the source, and your shield is there exactly for that - to provide shielding.
People who do not drink, do not smoke, do not eat red meat will one day feel really stupid lying there and dying from nothing.
