Rolled delay line of the coplanar line type
US4675625A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jul 31, 1985 |
| Grant date | Jun 23, 1987 |
| Priority date | — |
| Expiry date | Jul 31, 2005 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH05K2201/09336
- WIPO fieldAudio-visual technology
- WIPO sectorElectrical engineering
Abstract
A time delay device for adjusting the arrival time of an electronic signal at a specific area in a circuit pattern is presented. The time delay device is comprised of a coplanar flexible circuit having a conductive pattern consisting of a signal line in a ground shield. The signal line is serpentine and makes one or more passes back and forth on the dielectric surface of the flexible circuit. The ground plane covers substantially the entire surface of the laminate except for a small gap on either side of the signal line. This circuit laminate is then tightly rolled up and permanently packaged in a suitable sheath or by encapsulation.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.