Broadband directional coupler with an adjustable directivity

摘要

A directional coupler for the directional transmission of high frequency - signals has at least three lines (16, 18, 19) and at least three terminals (11, 12, 13, 14). Two lines (18, 19) of the three lines (16, 18, 19) at least at their ends are connected conductively. A third line (16) is connected between the two first lines (18, 19) and arranged to the electromagnetically coupled. In this case, the high frequency - signal from the third line (16) to the first line (18) and second line (19) transmit. The coupling is effected via a coupling slit.