How to simulate Multi-port excitation in ADS?

Array of (two) antennas => excitation will have same amplitude with 90 degree phase difference. How can I simulate this practical "combined" array effect in both Momentum and FEM, unlike what it does in post-processing.

^^This port setup doesn't reproduce the actual scenario that is done in the measurement.

This looks correct to me, except for total input power. You can reduce amplitude to 0.707 if you drive both antennas with a power splitter.

What makes you think this setup is wrong?

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