The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Sep. 25, 2018
Filed:
Mar. 11, 2015
Holger Adolf, Zirndorf, DE;
Rudi Baumgartl, Erlangen, DE;
Nikolaus Demharter, Dormitz, DE;
Jörg Ulrich Fontius, Neunkirchen A. Brand, DE;
Rene Gumbrecht, Herzogenaurach, DE;
Holger Adolf, Zirndorf, DE;
Rudi Baumgartl, Erlangen, DE;
Nikolaus Demharter, Dormitz, DE;
Jörg Ulrich Fontius, Neunkirchen A. Brand, DE;
Rene Gumbrecht, Herzogenaurach, DE;
Siemens Aktiengesellschaft, München, DE;
Abstract
A circuit arrangement for driving a transmission coil arrangement with at least two individual transmission coils of a magnetic resonance system for supplying a radiofrequency signal for producing alternating electromagnetic fields over at least two channels, with in each case a digital section and an analog section, is provided. In the digital section, in an envelope generator, base frequency signals that respectively generate an envelope are provided. The circuit arrangement also includes an intermediate frequency oscillator that generates a common intermediate frequency, a frequency mixer per channel for mixing the common intermediate frequency into the base frequency signals, and in the analog sections of the channels, respectively, second frequency mixers that mix a common radiofrequency signal into each base frequency signal. The envelope is transmitted, with the mixed-in intermediate frequency signal, and the total signal thus obtained is respectively conducted to an individual transmission coil via a respective amplifier.