Three-Way, Equal-Phase High Power Divider & Combiner with a Novel method of improving Isolation

The present paper relates to design and realization of microwave power dividers, combiners. A three way high power divider and high power three way combiner with dual directional coupler are presented. This invention is a novel method of implementation of three way high power divider and combiner using modified Wilkinson concept and by adding circulator in each arm after the distributed quarter wave microstrip line which avoids high power resistor across ports & improves isolation performance over wider bandwidth. Also in each arm of divider, a high power attenuator is used for amplitude balancing between ports. In-phase power combiner/divider is a common circuit employed in many microwave systems in Defence applications like SDR, Radar & EW systems.