Directional coupler
US7218186B2 · kind B2 · utility
31Cited by
7References
22Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Mar 29, 2004 |
| Grant date | May 15, 2007 |
| Priority date | — |
| Expiry date | Mar 29, 2024 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/185
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A directional coupler for low frequencies that is small and can handle high power levels. The directional coupler includes a pair of circuit lines having an input port, an output port, a forward coupled port and a reverse coupled port. The circuit lines are located proximate to each other such that they are electromagnetically coupled. A low pass filter is connected to the forward coupled port. The low pass filter shifts the operating frequency of the directional coupler.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.