RF Imbalance in 4x4 Downlink Throughput Testing

A question for all the experts:

During 4x4 DL throughput testing, we are achieving good throughput, but there is noticeable RF imbalance across all four antenna ports. When the power on one antenna port is increased, the power on all four ports increases simultaneously. Additionally, SSB is consistently transmitted on port 0.

Is this behavior expected? If not, how can we balance the power and achieve symmetric RF power across all ports?

I’d appreciate your insights, as I prefer not to attribute the issue to the UE or hardware without concrete evidence.

Have you checked the UL RSSI by port in your sector?

It might be an issue with the radiating system.

Check the receiving power level on each port , if required you can add some gains to balance it.

It is within the range and remains consistent across all setups.