International Journal of Engineering and Technology

circuit. This is done through the mainstream distribution between two transmission lines close together. This device is used to obtain a sample of attenuated signal transmitted without interrupting the transmission. The fundamental properties of all the directional couplers have a wide bandwidth, directivity of the signal in one direction, and an impedance matching for all output ports. The object of this paper is to present some results of simulation on the coupling and directivity of double ridge waveguide couplers in a field ridge waveguide. This results are obtain by Ansoft HFSS using the Finite Element Method (FEM) calculations and the Genetic Algorithms method, and which show good performance.