Multiband filter having comb-line and ceramic resonators with different pass-bands propagating in different modes
US7956706B2 · kind B2 · utility
1Cited by
11References
27Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 9, 2005 |
| Grant date | Jun 7, 2011 |
| Priority date | — |
| Expiry date | Sep 5, 2026 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2084
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multiband filtering apparatus (40) for use in a communications system, said apparatus including a housing (21); a plurality of cavities (22.1, 22.2) disposed within said housing wherein each cavity includes a resonant structure, the resonant structure having at least one ceramic element (23.1, 23.2); at least one input port (27) coupled to a first resonator of said plurality of resonators; at least one output port (28) coupled to a second resonator of said plurality of resonators; and a closure member (25) adapted to engage said housing (21) and cap said cavities.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.