Patent · US Active

Actively regulated modulation index for contactless IC devices

US7971794B2 · kind B2 · utility

14Cited by

13References

21Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Thomas Leutgeb · Lieboch, AT
Walter Kargl · Graz, AT
Richard Sbuell · Graz, AT
Edin Ibrahimagic · Graz, AT
Albert Missoni · Graz, AT

Key dates

Filing date	Feb 7, 2008
Grant date	Jul 5, 2011
Priority date	—
Expiry date	Jul 28, 2028

Classification

Technology area (CPC H)Electricity
CPC primaryH04L27/08
WIPO fieldDigital communication
WIPO sectorElectrical engineering

Abstract

A contactless IC device including a detection circuit configured to detect a carrier wave that has been amplitude shift-keying (ASK) modulated with digital data and a shunt circuit configured to regulate the carrier wave to a predetermined voltage level.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.