High performance dielectric ceramic filter using a non-linear array of holes
US6313721A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 17, 2000 |
| Grant date | Nov 6, 2001 |
| Priority date | — |
| Expiry date | Mar 17, 2020 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P1/2056
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A high performance dielectric ceramic filter in a small package is designed with one or more holes positioned off of the straight-line bisecting at least two holes. This configuration allows for the elimination of at least one trap hole while maintaining a given performance characteristic for the filter. In one specific embodiment of the present invention the performance characteristics of a conventional five-hole ceramic filter is realized in a three-hole filter wherein the holes are positioned so as to form the vertices of a triangle. The width of the resulting filter is approximately 50% of the width of the conventional five-hole filter it can replace. In another embodiment the same triangular positioning may be used to realize the performance characteristics of a four-hole ceramic filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.