design and implementation of 4:1 wilkinson power divider

In this paper, 4:1 wilkinson and gysel combiner are designed and simulated for high-power applications. since wilkinson power combiner provides broad bandwidth characteristics and low insertion loss, it can be an appropriate candidate for realizing the required power combiner. the fabricated combiner provides a maximum insertion loss of about 0.5db and max s11 and s22 of about -10 db in the frequency band of 8-9.2 ghz. it was designed in such a way that it can easily be tuned to compensate phase mismatch between four different inputs with a precision of about 15 degrees. .