Thin-film microwave filter
US4881050A · kind A · utility
27Cited by
9References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Aug 4, 1988 |
| Grant date | Nov 14, 1989 |
| Priority date | — |
| Expiry date | Aug 4, 2008 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H2001/0085
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A thin-film, lumped element filter utilizing spiral inductors and capacitive pi networks is disclosed. The filter is fabricated from a planar dielectric substrate having a ground plane on one side thereof and two thin-film metal layers and an insulation layer disposed therebetween on the opposite side of the dielectric substrate. The metal and insulation layers are configured to form one or more capacitive pi networks and spiral inductors, which are electrically interconnected to form the filter.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.