# US 10,502,797 B2 · Crossed-loop resonators > Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt - Number: US 10,502,797 B2 - Document ID: US10502797B2 - Status: Granted - Kind: B2 - Application number: 14/414,369 - Filed: 2013-07-19 - Published: 2015-07-02 - Granted: 2019-12-10 - Earliest claimed: 2012-07-19 - Assignees: Colorado Seminary, which owns and operates the University of Denver - Applicants: Colorado Seminary, which owns and operates the University of Denver - Inventors: George Rinard; Gareth Eaton - Web page: https://patentgrep.com/patent/US10502797B2 ## CPC - G01R 33/34: Constructional details, e.g. resonators {, specially adapted to MR} - G01R 33/34046: {Volume type coils, e.g. bird-cage coils; Quadrature bird-cage coils; Circularly polarised coils} - G01R 33/34053: {Solenoid coils; Toroidal coils} - G01R 33/34061: {Helmholtz coils} - G01R 33/34092: {RF coils specially adapted for NMR spectrometers} - G01R 33/345: of waveguide type (G01R33/343 takes precedence) - G01R 33/3657: {Decoupling of multiple RF coils wherein the multiple RF coils do not have the same function in MR, e.g. decoupling of a transmission coil from a receive coil} - G01R 33/3456: {Stripline resonators} - G01R 33/60: using electron paramagnetic resonance (G01R33/24, G01R33/62 take precedence) - G01R: MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES (indicating correct tuning of resonant circuits H03J3/12) ## Abstract Embodiments of the invention are directed toward a crossed-loop electron paramagnetic resonance resonator comprising a first resonator having a first resonator axis; and a second resonator having a second resonator axis. The first resonator axis and the second resonator axis can be substantially perpendicular. Either or both the first resonator and the second resonator can be a ribbon resonator having a plurality of metallic ribbons formed in a loop. Each metallic ribbon can include a central axis. The plurality of metallic ribbons can be arranged parallel relative one to another. ## Claims ### Claim 1 A crossed-loop electron paramagnetic resonance resonator comprising: a first resonator having a first resonator axis; and a second resonator having a second resonator axis, wherein the first resonator axis and the second resonator axis are substantially perpendicular, wherein both the first resonator and the second resonator comprise a ribbon resonator having a plurality of metallic ribbons formed in a loop, wherein each metallic ribbon includes a central axis, and wherein the plurality of metallic ribbons are arranged parallel relative one to another, wherein both ribbon resonators comprise two elongated metallic strips coupled to at least a subset of metallic ribbons, wherein the two elongated metallic strips are disposed parallel to the central axis of the subset of metallic ribbons. ### Claim 2 (depends on 1) The crossed-loop electron paramagnetic resonance resonator according to claim 1, wherein the second resonator is different type of resonator than the first resonator. ### Claim 3 (depends on 1) The crossed-loop electron paramagnetic resonance resonator according to claim 1, wherein each metallic ribbon is discontinuous between the two elongated metal strips. ### Claim 4 (depends on 1) The crossed-loop electron paramagnetic resonance resonator according to claim 1, wherein the ribbon resonator comprises a plurality of capacitors, wherein each capacitor is coupled with each of the two elongated metallic strips. ### Claim 5 (depends on 1) The crossed-loop electron paramagnetic resonance resonator according to claim 1, wherein the ribbon resonator comprises a plurality of chip capacitors, wherein each chip capacitor is coupled with each of the two elongated metallic strips. ### Claim 6 (depends on 1) The crossed-loop electron paramagnetic resonance resonator according to claim 1, wherein the electron paramagnetic resonance resonator is adapted to work with rapid scan electron paramagnetic resonance. ### Claim 7 (depends on 1) The crossed-loop electron paramagnetic resonance resonator according to claim 1, wherein the second resonator comprises a resonator selected from the group consisting of a resonator having at least one of the following topologies; cavity, helical, solenoidal, slotted tube, split ring, loop gap, saddle coil, Alderman-Grant, Helmholtz, Birdcage, reentrant, surface coils of various types, scroll, Fabry-Perot, Perot, parallel coil, dielectric ring, dielectric disk, dielectric cylinder, whispering gallery, transmission line, and horn. ### Claim 8 A crossed-loop electron paramagnetic resonance resonator comprising: a first resonator having a first resonator axis; and a second resonator having a second resonator axis, wherein the first resonator axis and the second resonator axis are substantially perpendicular, and wherein either or both the first resonator and the second resonator resonates with a frequency within the X band frequencies, wherein either or both the first resonator and the second resonator comprise a ribbon resonator having a plurality of metallic ribbons formed in a loop, wherein each metallic ribbon includes a central axis, and wherein the plurality of metallic ribbons are arranged parallel relative one to another, wherein both ribbon resonators comprise two elongated metallic strips coupled to at least a subset of metallic ribbons, wherein the two elongated metallic strips are disposed parallel to the central axis of the subset of metallic ribbons. ### Claim 9 (depends on 8) The crossed-loop electron paramagnetic resonance resonator according to claim 8, further comprising a sample cavity defined by the first resonator, wherein the sample cavity has a diameter greater than 2 inches. ### Claim 10 (depends on 8) The crossed-loop electron paramagnetic resonance resonator according to claim 8, wherein the first resonator resonates at a frequency that is different than the second resonator.