Invention Grant
- Patent Title: Circuit and apparatus for decoupling RF surface coils
- Patent Title (中): 用于去耦RF表面线圈的电路和设备
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Application No.: US12241257Application Date: 2008-09-30
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Publication No.: US07855559B2Publication Date: 2010-12-21
- Inventor: Anthony D. DeFranco , Matthew M. Meiller , Robert S. Stormont , Dashen Chu , Paul D. Haig
- Applicant: Anthony D. DeFranco , Matthew M. Meiller , Robert S. Stormont , Dashen Chu , Paul D. Haig
- Applicant Address: US NY Schenectady
- Assignee: General Electric Co.
- Current Assignee: General Electric Co.
- Current Assignee Address: US NY Schenectady
- Main IPC: G01V3/00
- IPC: G01V3/00

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.
Public/Granted literature
- US20100079139A1 CIRCUIT AND APPARATUS FOR DECOUPLING RF SURFACE COILS Public/Granted day:2010-04-01
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