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1. (WO2012114217) MRI RF POWER AMPLIFIER WITH MODULATED POWER SUPPLY
Latest bibliographic data on file with the International Bureau   

Pub. No.:    WO/2012/114217    International Application No.:    PCT/IB2012/050525
Publication Date: 30.08.2012 International Filing Date: 06.02.2012
IPC:
G01R 33/36 (2006.01)
Applicants: KONINKLIJKE PHILIPS ELECTRONICS N.V. [NL/NL]; (NL) (AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BE, BF, BG, BH, BJ, BR, BW, BY, BZ, CA, CF, CG, CH, CI, CL, CM, CN, CO, CR, CU, CY, CZ, DK, DM, DO, DZ, EC, EE, EG, ES, FI, FR, GA, GB, GD, GE, GH, GM, GN, GQ, GR, GT, GW, HN, HR, HU, ID, IE, IL, IN, IS, IT, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LV, LY, MA, MC, MD, ME, MG, MK, ML, MN, MR, MT, MW, MX, MY, MZ, NA, NE, NG, NI, NL, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SI, SK, SL, SM, SN, ST, SV, SY, SZ, TD, TG, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, UZ, VC, VN, ZA, ZM, ZW only).
PHILIPS INTELLECTUAL PROPERTY & STANDARDS GMBH [DE/DE]; Luebeckertordamm 5 20099 Hamburg (DE) (DE only).
GOMMERS, Ralf [NL/CN]; (NL) (For US Only).
SIMONS, Jan [NL/NL]; (NL) (For US Only).
LEUSSLER, Christoph [DE/DE]; (NL) (For US Only).
WIRTZ, Daniel [DE/DE]; (NL) (For US Only)
Inventors: GOMMERS, Ralf; (NL).
SIMONS, Jan; (NL).
LEUSSLER, Christoph; (NL).
WIRTZ, Daniel; (NL)
Agent: VAN VELZEN, Maaike; High Tech Campus Building 44 NL-5656 AE Eindhoven (NL)
Priority Data:
PCT/CN2011/071161 22.02.2011 CN
Title (EN) MRI RF POWER AMPLIFIER WITH MODULATED POWER SUPPLY
(FR) AMPLIFICATEUR DE PUISSANCE RF POUR IRM AVEC ALIMENTATION MODULÉE
Abstract: front page image
(EN)The invention relates to a MR device comprising a RF pulse generator which generates a RF pulse signal, a RF power amplifier (302) which amplifies the RF pulse signal, and a power supply controller (202) which modulates the supply voltage of the RF power amplifier (302). According to one aspect of the invention, the RF power amplifier (302) is a class -E amplifier, which is operated according to a polar modulation scheme. Furthermore, the invention relates to a RF coil module (301) for a MR device comprising at least one RF power amplifier (302) which amplifies a RF pulse signal supplied to an input port of the RF coil module, a coil element (303) connected to the output of the RF power amplifier (302), and a power supply controller (202) which modulates the supply voltage of the RF power amplifier (302).
(FR)La présente invention concerne un dispositif RM comprenant un générateur d'impulsions RF qui génère un signal d'impulsion RF, un amplificateur d'impulsion RF (302) qui amplifie le signal d'impulsion RF, et un dispositif de commande d'alimentation (202) qui module la tension d'alimentation de l'amplificateur d'alimentation (202) qui module la tension d'alimentation de l'amplificateur d'alimentation RF (302). Selon un aspect de l'invention, l'amplificateur de puissance RF (302) est un amplificateur de classe E, qui est utilisé selon un schéma de modulation polaire. De plus, l'invention concerne un module de bobine RF (301) pour un dispositif RM comprenant au moins un amplificateur de puissance RF (302) qui amplifie un signal d'impulsion RF transmis à un port d'entrée du module de bobine RF, un élément de bobine (303) connecté à la sortie de l'amplificateur de puissance RF (302), et un dispositif de commande d'alimentation (202) qui module la tension d'alimentation de l'amplificateur de puissance RF (302).
Designated States: AE, AG, AL, AM, AO, AT, AU, AZ, BA, BB, BG, BH, BR, BW, BY, BZ, CA, CH, CL, CN, CO, CR, CU, CZ, DE, DK, DM, DO, DZ, EC, EE, EG, ES, FI, GB, GD, GE, GH, GM, GT, HN, HR, HU, ID, IL, IN, IS, JP, KE, KG, KM, KN, KP, KR, KZ, LA, LC, LK, LR, LS, LT, LU, LY, MA, MD, ME, MG, MK, MN, MW, MX, MY, MZ, NA, NG, NI, NO, NZ, OM, PE, PG, PH, PL, PT, QA, RO, RS, RU, RW, SC, SD, SE, SG, SK, SL, SM, ST, SV, SY, TH, TJ, TM, TN, TR, TT, TZ, UA, UG, US, UZ, VC, VN, ZA, ZM, ZW.
African Regional Intellectual Property Organization (BW, GH, GM, KE, LR, LS, MW, MZ, NA, RW, SD, SL, SZ, TZ, UG, ZM, ZW)
Eurasian Patent Organization (AM, AZ, BY, KG, KZ, MD, RU, TJ, TM)
European Patent Office (AL, AT, BE, BG, CH, CY, CZ, DE, DK, EE, ES, FI, FR, GB, GR, HR, HU, IE, IS, IT, LT, LU, LV, MC, MK, MT, NL, NO, PL, PT, RO, RS, SE, SI, SK, SM, TR)
African Intellectual Property Organization (BF, BJ, CF, CG, CI, CM, GA, GN, GQ, GW, ML, MR, NE, SN, TD, TG).
Publication Language: English (EN)
Filing Language: English (EN)