US 12,754,264 B2 · Birdcage resonator for high resolution NMR applications

Abstract

Birdcage or birdcage-derived resonator for NMR experiments irradiation and detection having two electrically conducting, circular rings at opposing axial ends, joined and fastened with a number of mutually isolated parallel electrically conducting rods distributed over the circumference. The axially outer surfaces are spaced axially by a birdcage height, and either between each of the rods and the respective ring at least one capacitor is provided or in each of the rings at least one capacitor is provided in each of the ring segments between adjacent conducting rods. The capacitors are axial capacitor bars extending between the rings and beyond their outer surfaces forming at both axial sides salient portions, and the length of the salient portions at each side is at least 25% of the birdcage height.

Claims22

Dependent claims

A birdcage resonator for NMR experiments irradiation and detection comprising two electrically conducting, circular rings at opposing axial ends, joined and fastened with at least two mutually isolated parallel electrically conducting rods distributed over the circumference of said rings,

wherein said axially outer surfaces of said rings are spaced axially by a birdcage height,
wherein between each of said rods and the respective ring, at least one axial capacitor bar is provided, wherein said at least one axial capacitor bar has a rectangular or square cross-sectional shape with a thickness in a range of 0.05-1 mm and a width in a range of 0.5-3 mm,
wherein said axial capacitor bars between at least two electrodes provide a respective capacitance, and
wherein said capacitor bars extend between said rings and beyond outer surfaces of said rings forming, at both axial sides of the rings, salient portions,
and wherein a length of said salient portions at each axial side is at least 15% of said birdcage height.

2 more elements

wherein said axially outer surfaces of said rings are spaced axially by a birdcage height,
wherein between each of said rods and the respective ring, at least one axial capacitor bar is provided,
wherein the capacitors take the form of axial capacitor bars, which between at least two electrodes provide a respective capacitance, said axial capacitor bars extending between said rings and beyond outer surfaces of said rings forming, at both axial sides of the rings, salient portions,
wherein a length of said salient portions at each axial side is at least 15% of said birdcage height, and
wherein in each of the rings at least one capacitor bar is provided in at least two or in each of the ring segments between adjacent conducting rods.

2 more elements

Dependencies are inferred from the claim text.

Birdcage resonator for high resolution NMR applications

Life of this patent

Birdcage resonator for high resolution NMR applications

Life of this patent

Abstract

Claims22