Directional coupler
US6346863B2 · kind B2 · utility
26Cited by
3References
2Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 4, 1998 |
| Grant date | Feb 12, 2002 |
| Priority date | — |
| Expiry date | Dec 4, 2018 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/185
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
First and second microstriplines disposed substantially in parallel to each other and coupled with each other are formed spirally in a substantially quadrangular shape with the first microstripline being disposed inside. The space between the first and second microstriplines is set at least partly wider than the space between the adjacent turns of the pair of first and second microstriplines.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.