Can someone point me to a specific Power Divider model or manufacturer where the output power can be manipulated at will? For example, I may want to split my output power 65/35 or 80/20/ or 75/25. I have been looking online without any success so far.
In other words, I am interested in devices(manufacturers) that allow unequal splits.
I don't think you can design power splitters with variable output power.That is, changing output power ratio on the fly. You can achieve a fixed output power ratio from a power splitter by adding extra transmission lines with a specific characteristic impedance. See unequal-split wilkinson powerMicrowave Engineering by D.Pozar's Chapter 7.