Low pass filter incorporating coupled inductors to enhance stop band attenuation
US7679473B2 · kind B2 · utility
0Cited by
4References
28Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jan 15, 2008 |
| Grant date | Mar 16, 2010 |
| Priority date | — |
| Expiry date | Feb 24, 2028 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH03H7/1791
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
The present invention relates to a low pass filter incorporating coupled inductors to enhance stop band attenuation. In one embodiment, the coupled inductors are provided along with various capacitors to provide for superior performance within a smaller surface area of a semiconductor or ceramic integrated device. In a further specific embodiment, the capacitors are formed on an integrated device within an area on which entirely intertwined inductors are formed. In another embodiment, at least one further pair of coupled inductors is included to create additional frequency attenuation notches, as well as a wide stop-band.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.