Dielectric resonator and process for manufacturing the same

Details Dielectric resonator and process for manufacturing the same Dielectric resonator and process for manufacturing the same

1991-11-20

1993-05-11

Pascal, Robert J.

Wave transmission lines and networks

Resonators

Coaxial or shielded

3332191, H01P 704

Patent

active

052105113

ABSTRACT:
A dielectric resonator comprising a cylindrical substrate comprised of a dielectric ceramic, a first conductive film comprised of copper, formed on the inner surface, outer surface and one end of said cylindrical substrate, and a second conductive film comprised of at least one solder and tin, formed on said first conductive film. Thus the dielectric resonator of the present invention can be free from oxidation of the copper film when heating is carried out not in an inert gas environment but in the atmosphere. Hence it becomes unnecessary to use various devices for carrying out the heating in an inert gas environment as so required in the conventional cases. This also enables reduction of the number of processing steps, resulting in an improvement in productivity. Moreover, its weatherability can be improved, so that it can promise a long lifetime.

REFERENCES:
patent: 4668925 (1987-05-01), Towatari et al.
patent: 5004992 (1991-04-01), Grieco et al.

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