Return Loss
- the return loss is a measured used when looking at the matching of
radio frequency sources, transmissions lines and loads.
Return Loss (dB) is defined as a ratio of the incoming signal
to the same reflected signal as it enters a component. The Return Loss (RL) may
also be explained as the difference between the power of a transmitted signal
and the power of the signal reflections caused by variations in link and channel
impedance. A return loss plot indicates how well the link and channel's
impedance matches its rated impedance over a range of frequencies. High return
loss values mean a close impedance match, which results in greater
differentiation between the powers of transmitted and reflected signals.
Return Loss (dB) = 10 * LOG10(Reflected Power/Incident
Power)
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