Patent · US Active

Radio frequency communication devices and methods

US8112043B2 · kind B2 · utility

85Cited by

10References

25Claims

0Family size

Assignee

Infineon Technologies AG · DE

Inventors

Mikael Bergholz Knudsen · Gistrup, DK
Peter Bundgaard · Aalborg, DK
Jan-Erik Mueller · Ismaning, DE

Key dates

Filing date	Apr 11, 2008
Grant date	Feb 7, 2012
Priority date	—
Expiry date	Dec 6, 2030

Classification

Technology area (CPC H)Electricity
CPC primaryH04B17/20
WIPO fieldTelecommunications
WIPO sectorElectrical engineering

Abstract

One embodiment relates to a radio frequency (RF) communication device. The RF communication device includes an antenna interface coupled to an antenna that exhibits a time-varying impedance. The RF communication device also includes a test interface coupled to RF test equipment that exhibits a test impedance. A tuning circuit in the RF communications device selectively provides a matched impedance to either the time-varying impedance or the test impedance based on feedback derived from the test interface. Other methods and systems are also disclosed.

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