Printed filter for use in high-frequency circuit.

摘要

A printed filter effective for use in a high-frequency circuit such as a television tuner, the printed filter being equipped with a spiral coil formed by a conductive foil on a printed board so as to have a plurality of turns. At least one set of adjacent turns of the spiral coil are electrically coupled to each other through a short-circuit line constructed with a conductive foil similar to that of the spiral coil. The short-circuit line can be arranged to be cut whereby the filter characteristic is adjustable. <IMAGE>