Design Guidelines and Applications for Dual-Band Rat-Race Couplers and Gysel Power Dividers With Unequal Amplitude Imbalances

Abstract

Couplers of Sometimes, many and microwave thesepowercomponentsdividers systems are and areintegral subsystems. referredpartsto as signal-separating structures because they separate the input signals into two output signals with different power labels and phase delays. In-phase/out-of-phase couplers [rat-race couplers (RRCs)] and Gysel power dividers (GPDs) are two popular components because of their wide bandwidth and unequal power division flexibility. Here, we will show that the same design equations can be utilized to design both components.