We are evaluating SP4T switch, HMC1084LC4 with ADI's evaluation board.
Attach is the result of insertion loss at each port. The path of COM-P1
is much bigger than the other path.
We measured this data by terminating the unselected port.
Why the path of COM-P1 is bigger than the others?
Below is the additional information about SP4T switch evaluation result.
Return Loss of Port1 is not good as well as the insertion loss of it.
The other ports except Port1 are same as the datasheet's value.
Return Loss @ 28GHz
P1(P1 selected): -5.2dB
P2(P2 selected): -13.1dB
P3(P3 selected): -13.1dB
P4(P4 selected): -15.4dB
Insertion Loss @ 28GHz