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:
Dec. 21, 2010
Filed:
Sep. 30, 2008
Anthony D. Defranco, Pittsburgh, PA (US);
Matthew M. Meiller, Sussex, WI (US);
Robert S. Stormont, Hartland, WI (US);
Dashen Chu, Hartland, WI (US);
Paul D. Haig, Milwaukee, WI (US);
Anthony D. DeFranco, Pittsburgh, PA (US);
Matthew M. Meiller, Sussex, WI (US);
Robert S. Stormont, Hartland, WI (US);
Dashen Chu, Hartland, WI (US);
Paul D. Haig, Milwaukee, WI (US);
General Electric Co., Schenectady, NY (US);
Abstract
A decoupling circuit for a radio frequency (RF) surface coil having a plurality of tuning capacitors includes at least two decoupling points and a DC source coupled to the at least two decoupling points. Each decoupling point is associated with one of the plurality of tuning capacitors. Each decoupling point includes a decoupling inductor connected in parallel with a tuning capacitor, a diode connected in series with the decoupling inductor and in parallel with the tuning capacitor, a resistor connected in parallel with the diode and at least one isolating inductor connected between the resistor and the diode to RF isolate the resistor. The value of the resistor in each decoupling point is selected to maintain a high quality factor (Q) of the RF surface coil and to reduce the switching speed of the decoupling circuit.