Dielectric resonator and method for making
US4668925A · kind A · utility
18Cited by
7References
10Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Nov 15, 1985 |
| Grant date | May 26, 1987 |
| Priority date | — |
| Expiry date | Nov 15, 2005 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49016
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improved dielectric resonator for high frequency operation having improved unloaded Q is provided which is prepared by forming a first copper coating on the ceramic body to a thickness of 0.2 to 1 .mu.m by electroless plating or vacuum deposition, electrolytic plating a second copper coating on the first coating to a thickness of at least two-fold of the skin depth, and heat treating the thus coated body at 120.degree.-300.degree. C. in a reducing atmosphere or at 700.degree.-1080.degree. C. in a weakly acidic atmosphere.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.