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Rev C
Definition of Measured Specifications
*100% RF test is performed per spec definition for pin configuration 1 and port 1 (input port) is connected to pin1, port 2 (isolated port) is connected to
pin 3, port 3 (direct port) is connected to pin 4 and port 4 (isolated) is connected to pin 6.
Parameter Definition
Mathematical Representation
i, j, k, m is denoted as the port index of input, isolated, direct
and coupled port for specific pin configuration shown in the table
Return Loss
The impedance match of the
coupler to a 50Ω system. Return
Loss is an alternate means to
express VSWR.
10
ii
S
Isolation
The input power divided by the
sum of the power at the two
output ports.
10
20log
Insertion Loss
The input power divided by the
sum of the power at the two
output ports.
10
mi ki
S S+
Amplitude
Balance
The difference in power between
the two outputs.
10
S
Phase Balance
The difference in phase angle
between the two output ports.
ki mi
S S∠ − ∠ +