Title:
【発明の名称】誘電体共振器の製造方法
Document Type and Number:
Japanese Patent JP2633387
Kind Code:
B2
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.
Inventors:
IZUMI YASUHIRO
MAKIMOTO RYOICHI
YONEDA TAKEHIKO
TAGI HIROMITSU
MAKIMOTO RYOICHI
YONEDA TAKEHIKO
TAGI HIROMITSU
Application Number:
JP31726390A
Publication Date:
July 23, 1997
Filing Date:
November 20, 1990
Export Citation:
Assignee:
MATSUSHITA DENKI SANGYO KK
International Classes:
H01G4/12; H01P7/04; H01P11/00; (IPC1-7): H01P7/04; H01P11/00
Domestic Patent References:
| JP4160904A | ||||
| JP220093A | ||||
| JP59176907A | ||||
| JP61121501A | ||||
| JP2126701A | ||||
| JP58166806A |
Attorney, Agent or Firm:
Tomoyuki Takimoto