RF power dividers, also known as splitters or combiners, are essential components in wireless communication systems. 

In the antenna world, power dividers play an important role in applications like phased array antennas, where they combine signals from individual elements to achieve beamforming and beam steering. 

Additionally, when working with antenna arrays, we usually want to have a specific amplitude distribution on the elements. One way to achieve it is by designing unequal power dividers.