M Fallah - Malek-Ashtar University of Technology Department of Electrical Engineering Tehran, Iran
M. Ebrahiminexhad - Malek-Ashtar University of Technology Department of Electrical Engineering Tehran, Iran
M. Ahrari - Malek-Ashtar University of Technology Department of Electrical Engineering Tehran, Iran

Analytical design and simulation of a new 1 to 3 rat-race power divider is presented. Cross-talk between coupled lines and defected microstrip structures are used in this analysis and design. This rat-race is designed for 1.3GHz and divides power equally in 2 ports and isolates last port. Best features of the proposed method are high compacting ability, suppressing high order harmonics, and simultaneously increasing the bandwidth in comparison with conventional rat-races.

Cross-Talk; Defected Microstrip Structure; Power Divider; Rat-Race