Microwave filter using stripline technology

In the case of a microwave filter using stripline technology and having resonator strips which are short-circuited at the ends, the short circuit to earth is provided in that the carrier substrate has a hole at that end of a strip which is to be short-circuited, through which hole an electrical connection (which conducts a radio frequency) is passed between the metallic resonator strip and the earth connection. For this purpose, advantageous embodiments provide either through-metallisation of the hole or provide for a piece of wire to be passed through and for the projecting wire ends to be smeared on to the metal layers on both sides.