Multi-filter device and method of making same
US5422610A · kind A · utility
6Cited by
5References
18Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Sep 29, 1993 |
| Grant date | Jun 6, 1995 |
| Priority date | — |
| Expiry date | Sep 29, 2013 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P11/007
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A multi-filter device comprising a ceramic block (10) having at least two filters A and B. Both filters A and B include a notch (11 and 13, respectively) formed on one side of the ceramic block (10), such that these notches are flanked by ceramic block material extensions (32). So configured, coarse tuning of the ceramic block (10) can be accomplished through use of existing double-sided lap techniques, yet constant parameter alteration for both filters will be maintained during the milling process.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.