Printed circuit board helical resonator and filter apparatus
US6064285A · kind A · utility
5Cited by
12References
12Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1998 |
| Grant date | May 16, 2000 |
| Priority date | — |
| Expiry date | Dec 11, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/18
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A filter described which includes helical resonator elements constructed using printed circuit board (PCB) materials and fabrication techniques. A helical resonator element is formed from conductive traces on either side of a double sided PCB substrate with interconnection of the traces using plated through holes to form a three dimensional serpentine or helical conductor path. Multiple resonator elements are RF coupled using ferromagnetic coupling elements. The shape and number of the coupling elements may be selected to control RF coupling between resonator elements and the tuning of the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.