Delay line device and a method for producing the same

A method of producing a delay line device comprising:

• a first step of alternately accumulating a plurality of first greensheets each having an unbaked grounding electrode on an upper surface thereof and a plurality of second greensheets each having an unbaked strip-line conductor, in the manner that two of the first greensheets come in uppermost and lowermost positions;
• a second step of accumulating a third greensheet having no metal layer thereon on the first greensheet in the uppermost position, whereby to produce a lamination;
• a third step of forming unbaked external input and output electrodes and an external grounding electrode on a side surface of the lamination;
• and
• a fourth step of baking the lamination together with the external electrodes;
• wherein the strip-line conductors are connected in series via a through hole made in the lamination to form a strip-line conductor series, and both ends of the strip-line conductor series are extended onto the side surface of the lamination to be connected to the external input and output electrodes respectively, and connecting portions of the grounding electrodes are extended onto the side surface of the lamination to be connected to the external grounding electrode.

A method of producing a delay line device, comprising:

• a first step of alternately accumulating a plurality of first greensheets each having an unbaked grounding electrode on an upper surface thereof and a plurality of second greensheets each having an unbaked strip-line conductor in the manner that two of the first greensheets come in uppermost and lowermost positions;
• a second step of accumulating a third greensheet having no metal layer thereon on the first greensheet in the uppermost position, whereby to produce a lamination;
• a third step of baking the lamination;
• a fourth step of forming unbaked external input and output electrodes and an external grounding electrode on a side surface of the baked lamination;
• and
• a fifth step of baking the lamination together with the external electrodes;
• wherein the strip-line conductors are connected in series through a via hole made in the lamination to form a strip-line conductor series, and both ends of the strip-line conductor series are extended onto the side surface of the lamination to be connected to the external input and output electrodes, respectively.