Electromagnetic resonator comprised of annular resonant bodies disposed between confinement plates
US5629266A · kind A · utility
Assignees
Inventors
Key dates
| Filing date | Dec 2, 1994 |
| Grant date | May 13, 1997 |
| Priority date | — |
| Expiry date | Dec 2, 2014 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S505/866
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
Electromagnetic resonators according to the invention comprise a first body, exemplarily a split thin ring, that is disposed between two planar field confining plates. The thickness (t) of the first body is less (typically less than 1/2 or 1/10) of the outer radius (R) of the body, and the distance between the first body and the confining plates is less than R. In preferred embodiments the first body comprises superconducting material. Resonators according to the invention can be readily assembled into relatively compact filters that are easily tunable, can have large quality factor, and offer the possibility of single mode operation. Such filters can advantageously be used in, e.g., wireless communications systems.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.