Agilent Technologies E4404B - Page 73

5-12 Chapter 5
Making GSM Cable and Antenna Measurements
Making Return Loss Measurements
Where: RL is the measured return loss value.
VSWR is sometimes stated as a ratio. For example: 1.2:1 (“one point two
to one”) VSWR. The first number is the VSWR value taken from the
table or calculated using the formula. The second number is always 1.
VSWR
110
RL–
20
----------
+
110
RL–
20
----------
–
-----------------------=