Power passing inductor capable of operation at frequencies higher than 900 MHz
US5179334A · kind A · utility
10Cited by
8References
8Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Oct 18, 1991 |
| Grant date | Jan 12, 1993 |
| Priority date | — |
| Expiry date | Oct 18, 2011 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/09
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The invention is comprised of two inductors wound in series but in opposite directions around a ferrite core, a resistor being connected in parallel with one inductor, and a wire being looped through a ferrite bead and being wound around the other inductor. The invention allows a 60 Hz power signal to pass without excessively interfering with radio frequency signals in excess of 900 MHz and preferably on the order of 1 GHz. The invention is particularly useful in cable television systems, where a power signal and an RF signal are sinultaneously transmitted.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.