MICROSTRIP DIRECTIONAL COUPLER Russian patent published in 1995 - IPC

FIELD: radio engineering. SUBSTANCE: microstrip directional coupler has dielectric backing with screen placed on one of its surfaces and center and extreme intercoupled conductors manufactured in the form of square - on the other. Length of extreme strip conductors on sections parallel to planes limiting period is bigger than length of center strip conductor by value not less than half-gap between them. This levels electric lengths of center and extreme strip conductors. Center and corresponding outer extreme strip conductors are provided with protrusions located in gap between them on sections perpendicular to planes limiting period. EFFECT: increased operational stability. 1 dwg