Directional coupler comprising a non-straight main conductor line for receiving a high power signal having a power of 100 W or more, and at least one coupling element (38a, 38b), and a circuit board, in particular a printed circuit board, on which the directional coupler is arranged, wherein - the non-straight main conductor line is arranged to run in a plane (P 0), - the at least one coupling element (38a, 38b) is arranged sectionally parallel to the main conductor line, and the main conductor line comprises two straight sections (50a, 50b) and a third section, wherein the circuit board comprises a first circuit board part and a second circuit board part, wherein each of the two straight sections (50a, 50b) is arranged on the respective printed circuit board parts (54a, 54b), wherein the two straight sections (50a, 50b) are connected by the third section, wherein the third section is a connection bridge or a contact passing through the first circuit board part and the second circuit board part, wherein the at least one coupling element comprises a first coupling element configured to reflect a wave and a second coupling element configured to reflect a wave, wherein the first coupling element is arranged on the first circuit board part sectionally parallel to one of the two straight sections (50a, 50b) and the second coupling element is arranged on the second circuit board part sectionally parallel to the other one of the two straight sections (50a, 50b),and wherein the first coupling element and the second coupling element are arranged on different sides of the main conductor line. a non-straight main conductor line for receiving a high power signal having a power of 100 W or more, and at least one coupling element (38a, 38b), and a circuit board, in particular a printed circuit board, on which the directional coupler is arranged, wherein - the non-straight main conductor line is arranged to run in a plane (P 0), - the at least one coupling element (38a, 38b) is arranged sectionally parallel to the main conductor line, and - the non-straight main conductor line is arranged to run in a plane (P 0), - the at least one coupling element (38a, 38b) is arranged sectionally parallel to the main conductor line, and the main conductor line comprises two straight sections (50a, 50b) and a third section, wherein the circuit board comprises a first circuit board part and a second circuit board part, wherein each of the two straight sections (50a, 50b) is arranged on the respective printed circuit board parts (54a, 54b), wherein the two straight sections (50a, 50b) are connected by the third section, wherein the third section is a connection bridge or a contact passing through the first circuit board part and the second circuit board part, wherein the at least one coupling element comprises a first coupling element configured to reflect a wave and a second coupling element configured to reflect a wave, wherein the first coupling element is arranged on the first circuit board part sectionally parallel to one of the two straight sections (50a, 50b) and the second coupling element is arranged on the second circuit board part sectionally parallel to the other one of the two straight sections (50a, 50b),and wherein the first coupling element and the second coupling element are arranged on different sides of the main conductor line.