Method for transmitting magnetic resonance signals with double frequency conversion

US8489025B2 · kind B2 · utility

Assignee

• Siemens Aktiengesellschaft · DE

Inventors

• Stephan Biber · Erlangen, DE
• Jan Bollenbeck · Eggolsheim, DE
• Ralph Oppelt · Uttenreuth, DE
• Markus Vester · Koblenzer Straße, DE

Key dates

• Filing date: Mar 22, 2011
• Grant date: Jul 16, 2013
• Expiry date: Dec 20, 2031

Classification

• Technology area (CPC G): Physics
• CPC primary: G01R33/3621
• WIPO field: Measurement
• WIPO sector: Instruments

Abstract

Front bandpass filters that are essentially transmissive only between a minimum frequency and a maximum frequency filter the magnetic resonance signals. Front frequency mixers mix output signals of each of the bandpass filters with a front LO frequency that is standard for all the magnetic resonance signals. Rear bandpass filters that are essentially transmissive only around a front intermediate frequency filter the output signals of the front frequency mixers. Rear frequency mixers mix output signals of each of the rear bandpass filters with a respective constant rear LO frequency. Frequency filters that are transmissive for frequencies in the range of the difference of the rear LO frequency that is supplied to the rear frequency mixer arranged upstream thereof and the front intermediate frequency filter the output signals of the rear frequency mixers. Output signals of the frequency filters are combined into a common signal, which is transmitted onward.