I have a transmission line with characteristic impedance of 75Oohm.
I model it with both TLIN (electrical) and MSUB (physical) model.
using a 5GHZ data generator to check the signal quality. I found that the result with TLIN model is ok. But the result with MSUB model is bad, still got some ringing.
Both model has Z0=75Ohm and the load is also 75Ohm, which should be impedance matched.
but why there is the difference? why the MSUB model has ringing even though impedance matched?
I model it with both TLIN (electrical) and MSUB (physical) model.
using a 5GHZ data generator to check the signal quality. I found that the result with TLIN model is ok. But the result with MSUB model is bad, still got some ringing.
Both model has Z0=75Ohm and the load is also 75Ohm, which should be impedance matched.
but why there is the difference? why the MSUB model has ringing even though impedance matched?