Galvanically isolated, directional coupler
US9413053B2 · kind B2 · utility
Assignee
Inventor
Key dates
| Filing date | Jul 16, 2012 |
| Grant date | Aug 9, 2016 |
| Priority date | — |
| Expiry date | Jul 16, 2032 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P5/186
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A galvanically isolated, directional coupler, especially for in- and out-coupling of high-frequency measurement signals of a radar fill-level measuring device, wherein two mutually engaging, oppositely bent, conductive traces are provided, wherein the two oppositely bent, conductive traces are so arranged that that they couple with one another over a region of a quarter wavelength (λ/4) of the wavelength associated with the center frequency of the measuring signals and form two groups of laterally coupled, conductive traces, and wherein curved conductive trace portions adjoin each of the two groups of laterally coupled, conductive traces, in each case, over a region, which is less than an eighth wavelength (λ/8) of the wavelength associated with the center frequency.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.