Method and apparatus for two dimensional filtering in a communications system using a transformer system
US6393265B1 · kind B1 · utility
5Cited by
4References
36Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Nov 9, 1999 |
| Grant date | May 21, 2002 |
| Priority date | — |
| Expiry date | Nov 9, 2019 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH04B1/0458
- WIPO fieldTelecommunications
- WIPO sectorElectrical engineering
Abstract
A transformer system comprises a transformer star winding to be coupled to an antenna system, and a transformer delta winding disposed with said transformer star winding. The transformer star winding includes a set of star elements and the transformer delta winding includes a set of delta elements each being substantially perpendicularly disposed with a corresponding star element from the set of star elements.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.