Microminiature electrical delay line utilizing thin film inductor array with magnetic enhancement and coupling
US4152679A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Nov 14, 1977 |
| Grant date | May 1, 1979 |
| Priority date | — |
| Expiry date | Nov 14, 1997 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K1/165
- WIPO fieldElectrical machinery, apparatus, energy
- WIPO sectorElectrical engineering
Abstract
A microminiature electrical delay line utilizes an m-derived filter formed by depositing a film of permalloy or other high permeability metal on a quartz or other dielectric substrate, then depositing a layer of quartz or other dielectric over the permalloy film, after which a plurality of microminiature thin film inductance coils are deposited on the dielectric layer and joined together electrically in series, a top layer of quartz or other dielectric then is deposited over the interconnected coils and a strip of permalloy or other high permeability metal is deposited over the top dielectric layer to extend across the coils, a gap being provided in the strip of permalloy at the central axis of each coil.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.