The Design of a Directional Coupler Made on Microstrip Structures

The article considers models of directional couplers obtained on segments and microstrip structures. For a compact coupler, optimization of its parameters was used to adjust the characteristics to those similar to the standard design. The use of structures instead of quarter-wave segments is justified by the fact that they have similar characteristics at smaller sizes. This fact allows them to be used for miniaturization of connectors. Thus, we managed to obtain a compact design of the coupler with a 72.5% smaller area than its standard implementation. At the same time, the topology of the device has technologically feasible dimensions.