Integrated phase shifter of differential signals in quadrature
US7459989B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | May 29, 2007 |
| Grant date | Dec 2, 2008 |
| Priority date | — |
| Expiry date | Jun 8, 2027 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01F17/0033
- WIPO fieldBasic communication processes
- WIPO sectorElectrical engineering
Abstract
A distributed phase shifter including: a first planar winding having its ends defining accesses in phase opposition; a second planar winding coupled with the first one and grounded by a first capacitive element; a third planar winding in a conductive level different from that receiving the first winding and electrically in series with the second winding; and a fourth planar winding, coupled with the third one in a conductive level different from that receiving the second winding, first ends of the third and fourth windings being connected by a capacitive element and their second ends being connected by another capacitive element, their first and second respective ends defining accesses in phase quadrature.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.