If you are a newcomer in the RF industry, it must be difficult to distinguish VSWR and return loss. Let's go and find out the easiest way to help you. First, let’s see what is VSWR and return loss.
VSWR
VSWR ( (Voltage Standing Wave Ratio)is defined as the ratio of the maximum voltage to the minimum voltage in standing wave pattern along the length of a transmission line structure. It varies from 1 to (plus) infinity and is always positive. Unless you have a piece of slotted line-test equipment this is a hard definition to use, especially since the concept of voltage in a microwave structure has many interpretations.
Return loss (RL) is the ratio of the reflected power to the incident power, in decibels (dB).
Second, let’s see the comparison table of VSWR & Return loss.
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