Unmatched Controlled impedence signal
What happens to a controlled impedence signal (e.g 50 ohms) running through a PCB, that is not matched correctly. What will be the effect on your board and the entire design.
Solution
The "signal" is AC current flowing from the sender through the transmission line into the receiver.
Each of the listed components has its characteristic impedance. The sender has its output impedance. The transmission line can be seen as a general impedance. The receiver has its input impedance.
In the correctly designed channel, the transmission line impedance is matched to the sender's output impedance, and, naturally, the receiver must have its input impedance of the same value as the sender's output impedance.
A signal loss happens when either of those two transition points is not matched to the following element. As with signal loss, you can imagine transmission loss and reflection loss. Both losses represent attenuation of the signal along with the signal distortion.
Shortly: A signal loss happens.
Each of the listed components has its characteristic impedance. The sender has its output impedance. The transmission line can be seen as a general impedance. The receiver has its input impedance.
In the correctly designed channel, the transmission line impedance is matched to the sender's output impedance, and, naturally, the receiver must have its input impedance of the same value as the sender's output impedance.
A signal loss happens when either of those two transition points is not matched to the following element. As with signal loss, you can imagine transmission loss and reflection loss. Both losses represent attenuation of the signal along with the signal distortion.
Shortly: A signal loss happens.
