Spiral coupler
US7714679B2 · kind B2 · utility
6Cited by
16References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jan 29, 2008 |
| Grant date | May 11, 2010 |
| Priority date | — |
| Expiry date | Jun 19, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/185
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
An improved spiral coupler including a plurality of parallel, coextensive conductive strips disposed in a planar spiral path, including a first strip having an input port and a direct or through port, a second strip having a coupler port and an isolated port and a first cross-over connection for bridging the strips from the inside to the outside of the spiral path to provide all four the ports external access to the spiral path.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.