Design of Wideband Wilkinson Power Divider for Sub-6Ghz Applications

Power dividers or combiners are crucial parts of any RF subsystems and network for determining efficient performance. In complex circuits, for instance, rectifiers, amplifiers, etc these splitters and combiners play a major role in combining the inputs or division of power at outputs. Amongst all types of power dividers, Wilkinson Power Divider is considered to be the easiest in terms of designing and deployment while achieving enhanced characteristics at the desired band. The need of the hour is to attain a wideband characteristic while avoiding the unnecessary expansion of the design structure. However, at lower microwave frequencies it is definite for the design to be large and bulky because of the increase in wavelength. In this proposed work, a 2-way Wilkinson power divider is reported for the operating frequency of 3.8 GHz lying in the Sub-6GHz band. The single-stage Wilkinson power divider has been further modified to a multi-stage Wilkinson power divider to achieve a bandwidth of nearly 4 GHz with a compact size at the same time. Furthermore, the ultimate design has been analyzed in terms of other parameters such as insertion loss, return loss, and isolation.