Attenuation
The attenuation in the case of coaxial cables is the line loss (reduction of the signal amplitude) from the beginning of the line to the end of the line. Since each conductor acts as a transmitting antenna, electrical power is emitted, so this value (given in dB) must be kept constructively small. Attenuation increases with increasing frequency and cable length, i.e. the signal level is reduced.
The higher the attenuation value and the frequency, the lower the useful signal at the end of the cable. The signal can be influenced over the length of the cable. The following applies: the shorter the cable, the better the signal at the end of the cable.
Important calculation formula:
Damping a is determined by:
Performance ratio: a = 10lg (P1 / P2) in db
Voltage ratio: a = 20lg (U1 / U2) in db
