Coaxial type tunable hyperfrequency elimination band filter comprising of dielectric resonators
US4620168A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | May 9, 1984 |
| Grant date | Oct 28, 1986 |
| Priority date | — |
| Expiry date | May 9, 2004 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/202
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A tunable hyperfrequency elimination band filter forms a coaxial line having a rectangular cross-section external conductor enclosing a rectangular cross-section internal conductor which is substantially co-axial therewith. A plurality of cylindrical resonators are mounted on an interior face of the external conductor. The width of the internal conductor is reduced in areas adjacent to each resonator. The resonators are cylindrically shaped and constructed of a dielectric material. Each resonator is mounted to the interior face by means of dielectric screws which may be adjusted to cause the central frequency of the filter to be tuned. Hyperfrequency absorbent material may be placed on the interior walls in areas opposite the resonators.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.