Patent · US Active

Method for monitoring an RF power amplifier, and an RF device, a monitoring device, and an MR system corresponding thereto

US7474877B2 · kind B2 · utility

2Cited by

9References

14Claims

0Family size

Assignee

Siemens Aktiengesellschaft · DE

Inventors

Wolfgang Bielmeier · Erlangen, DE
Klaus Ludwig · Erlangen, DE

Key dates

Filing date	Feb 10, 2005
Grant date	Jan 6, 2009
Priority date	—
Expiry date	Jan 10, 2027

Classification

Technology area (CPC G)Physics
CPC primaryG01R33/288
WIPO fieldMeasurement
WIPO sectorInstruments

Abstract

In a method for monitoring a radio-frequency power amplifier, and a radio-frequency device, and a radio-frequency monitoring device and a magnetic resonance tomography system, radio-frequency pulses are emitted at temporal intervals by the radio-frequency power amplifier, and measurement values that represent the power of the radio-frequency pulses are measured at temporal intervals. The measurement values are respectively loaded with a measurement error. Control values are respectively formed based on the sum of a number of measurement values loaded with measurement errors, and the radio-frequency power amplifier is limited in operation if and when a control value reaches or exceeds a predetermined limit control value.

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