Batch fabrication of frequency selective limiter elements
US4970775A · kind A · utility
Assignee
Inventors
Key dates
| Filing date | Mar 5, 1990 |
| Grant date | Nov 20, 1990 |
| Priority date | — |
| Expiry date | Mar 5, 2010 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T29/49792
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A plurality of frequency selective limiting units are prepared on a common substrate. A plurality of generally linear signal carrying conductors are formed in spaced relation on a first ferrite member, the opposite side of which contains a lower ground plane. A second ferrite member is bonded to the first ferrite member with a nonconductive adhesive to form a layered structure. Grooves are formed in a free surface of the structure to a depth sufficient to cut through the first and second ferrite members and to expose the lower ground plane. The structure is metallized in a conformal manner so that the metallization is in contact with the lower ground plane. The units are separated by dicing to thereby provide a plurality of individual FSL's.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.