Patent · US Active

Method and circuit arrangement for operating multi-channel transmit/receive antenna devices

US7615999B2 · kind B2 · utility

5Cited by

5References

12Claims

0Family size

Assignee

KONINKLIJKE PHILIPS ELECTRONICS NV · NL

Inventors

Ingmar Graesslin · Wenningstedt-Braderup (Sylt), DE
Peter Vernickel · Hamburg, DE
Christoph Leussler · Hamburg, DE

Key dates

Filing date	Apr 24, 2006
Grant date	Nov 10, 2009
Priority date	—
Expiry date	Nov 2, 2026

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/5659
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

Methods and circuit arrangements for operating a multi-channel transmit/receive antenna device or arrangement, especially for use in a magnetic resonance imaging (MRI) system, are disclosed by which RF amplifiers can be used to their full peak power capability without running the risk that the RF amplifier is damaged due to excessive reflected power at its output. Furthermore by evaluating certain forward and reflected power signals patient safety is achieved with respect to monitoring the limits of the specific absorption rate.

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