LANGE COUPLER Russian patent published in 2021 - IPC H01P5/00 

FIELD: radio engineering.

SUBSTANCE: invention relates to the field of radio engineering, in particular to the microstrip quadrature Lange coupler. The Lange coupler contains a dielectric substrate, a metal grounding layer formed on the first side of the substrate, a linear layer formed on the second side of the substrate and forming a counter-pin structure of five conductive metal microstrip lines, a dielectric layer deposited on local areas of the second side of the substrate and a linear layer of microstrip lines with the formation of isolated sections in the linear layer at the intersection of the linear layer with a flat layer of conductive jumpers, which are applied to the dielectric layer to connect non-contiguous microstrip lines. In this case, the dielectric layer is made in the form of a polymer photosensitive composition, including components in the following ratio, wt. %: poly(o-hydroxyamide) – 12…15; photosensitive component - 2.4…3; acid catalyst - 2.5…5; amide solvent the rest, and the conductive bridges are made in the form of a multilayer metal coating, Cr-Cu-Cr +galvanic Au, where Cu is the main conductive layer, and Au acts as a finishing coating.

EFFECT: increase in the reliability of the Lange coupler.

1 cl, 2 dwg