If you will work at one single frequency, choose narrowband model which has closest center frequency to yours.
Insertion loss and Phase Balance will be better.
E seems a balanced to single-ended. Can I ground the balanced side to make it single-end to single-end. Then why not D?. What about the options F and up?
If you will work at one single frequency, choose narrowband model which has closest center frequency to yours.
Insertion loss and Phase Balance will be better.