US5598097A
Expired / Lapsed
US
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Dielectric resonator-based electron paramagnetic resonance probe
Assignee: Research Foundation of the State University of New York
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Filing: 1994-07-22
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Granted: 1997-01-28
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Expires: 2014-07-22
Abstract
Abstract An apparatus for use in electron paramagnetic spectroscopy having a resonant structure with one or more dielectric resonators, the resonant frequency of which may be varied by varying the distance between the dielectric resonators, the coupling between the coupler and resonant structure may be varied by a remote coupling matching device without changing the resonant frequency of the resonant structure.
Inventors
- 👤 Charles P. Scholes
- 👤 Andrzej Sienkiewicz
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 00:56
CPC Classifications
G; G01; G01R; G01R33/00; G01R33/20; G01R33/60; G01R33/28; G01R33/32; G01R33/34; G01R33/345
Claims Analysis
Total Claims: 29
Claim 1
Independent Claim
78 words
An electron paramagnetic resonance probe comprising: at least one dielectric resonator having a hole extending axially therethrough; a microwave shield surrounding said resonator, said microwave shield having a hole extending axially therethrough and comprising a low loss dielectric polymeric material having a metallic coating wherein the hole within said microwave shield is aligned with the hole of said at least one dielectric resonator; and a coupler wherein microwaves generated from a distant source are coupled to said resonator.
Claim 2
Dependent Claim
78 words
An electron paramagnetic resonance probe comprising: at least one dielectric resonator having a hole extending axially therethrough; a microwave shield surrounding said resonator, said microwave shield having a hole extending axially therethrough and comprising a low loss dielectric polymeric material having a metallic coating wherein the hole within said microwave shield is aligned with the hole of said at least one dielectric resonator; and a coupler wherein microwaves generated from a distant source are coupled to said resonator.
Claim 3
Dependent Claim
20 words
An electron paramagnetic resonance probe of claim 1 wherein said at least one dielectric resonator comprises a single cylindrical resonator.
Claim 4
Dependent Claim
29 words
An electron paramagnetic resonance probe of claim 2 wherein said coupler comprises: a microwave transmission line; and an antenna wherein said antenna is disposed adjacent said single dielectric resonator.
Claim 5
Dependent Claim
49 words
An electron paramagnetic resonance probe of claim 1 wherein said at least one dielectric resonator comprises a first and second dielectric resonator having a hole extending axially therethrough, said second resonator being disposed above said first resonator wherein the hole within said first and second dielectric resonators are aligned.
Claim 6
Dependent Claim
34 words
An electron paramagnetic resonance probe of claim 4 wherein said coupler comprises: a microwave transmission line; and an antenna, wherein said antenna is disposed adjacent and substantially equidistant from said first and second resonators.
Claim 7
Dependent Claim
35 words
An electron paramagnetic resonance probe of claim 5 wherein said at least one dielectric resonator comprises a first and second dielectric resonator and wherein a low loss dielectric spacer is disposed between said dielectric resonators.
Claim 8
Dependent Claim
15 words
An electron paramagnetic resonance probe of claim 4 wherein said dielectric resonators are disc shaped.
Claim 9
Dependent Claim
25 words
An electron paramagnetic resonance probe of claim 7 wherein said microwave shield conforms to surround the outer perimeter of said at least one dielectric resonator.
Claim 10
Dependent Claim
26 words
An electron paramagnetic resonance probe of claim 1 wherein said at least one dielectric resonator comprises first and second dielectric resonators separated by a predetermined distance.
Claim 11
Dependent Claim
27 words
An electron paramagnetic resonance probe of claim 1 wherein said microwave shield comprises a low loss dielectric material having an outer surface coated with a metallic paint.
Claim 12
Dependent Claim
26 words
An electron paramagnetic resonance probe of claim 10 further comprising an outer body surrounding said microwave shield adapted to form a connection with a mixer housing.
Claim 13
Dependent Claim
27 words
An electron paramagnetic resonance probe of claim 10 further comprising an outer body surrounding said microwave shield having a hole extending axially therethrough and a capillary adapter.
Claim 14
Dependent Claim
113 words
An electron paramagnetic resonance probe of claim 1 wherein: said at least one dielectric resonator is cylindrically shaped; said microwave shield comprises a cylindrical side wall, the outer portion of said side wall having a coating of a metallic paint; and further comprising first and second lids sized to fit within said cylindrical side wall adjacent said at least one dielectric resonator; said first and second lids having a hole extending through the length of said lids wherein when said first and second lids are placed within said cylindrical side wall, and wherein the hole within said at least one dielectric resonator is aligned with the holes of said first and second lids.
Claim 15
Dependent Claim
21 words
An electron paramagnetic resonance probe of claim 13 further comprising a metallic sleeve disposed within the hole of said first lid.
Claim 16
Dependent Claim
45 words
An electron paramagnetic resonance probe of claim 1 wherein said coupler comprises a microwave transmission line and a non-linear shaped antenna lying within a plane perpendicular to an axis extending through said aligned holes, said antenna being placed near said at least one dielectric resonator.
Claim 17
Dependent Claim
30 words
An electron paramagnetic resonance probe of claim 15 further comprising a coupling matching device having a center conductor wherein said antenna, center conductor and microwave transmission line are electrically connected.
Claim 18
Dependent Claim
62 words
An electron paramagnetic resonance probe of claim 16 wherein: said center conductor extends into a tube; and a moveable metallic plunger sized to fit within said tube and having an opening extending axially through said plunger sized to accept said center conductor wherein the plunger may be moved axially within said tube thereby changing the electrical length of the coupling matching device.
Claim 19
Dependent Claim
17 words
An electron paramagnetic resonance probe of claim 15 wherein said non-linear shaped antenna is substantially hook shaped.
Claim 20
Dependent Claim
44 words
An electron paramagnetic resonance probe of claim 1 wherein said coupler comprises a microwave transmission line and a non-linear shaped antenna within a plane parallel to an axis extending through said aligned holes, said antenna being placed near said at least one dielectric resonator.
Claim 21
Dependent Claim
39 words
An electron paramagnetic resonance probe of claim 1 further comprising a remote coupling matching device operatively engaged to said coupler whereby the resonant frequency remains substantially unchanged upon modification of the coupling between the resonant structure and the coupler.
Claim 22
Dependent Claim
20 words
An electron paramagnetic resonance probe of claim 20 wherein said coupling matching device comprises a coaxial waveguide of adjustable length.
Claim 23
Dependent Claim
19 words
An electron paramagnetic resonance probe of claim 21 wherein said coupler comprises an antenna, connector and microwave feed line.
Claim 24
Dependent Claim
23 words
An electron paramagnetic resonance probe of claim 22 wherein said connector comprises a three-way connection between said conductor, said waveguide and said antenna.
Claim 25
Dependent Claim
46 words
An electron paramagnetic resonance probe of claim 21 wherein said coaxial waveguide of adjustable length comprises: a hollow tube; a conductor disposed in said tube, electrically connected to said coupler; and a metallic plunger surrounding said cable and axially moveable along the length of said cable.
Claim 26
Dependent Claim
62 words
An electron paramagnetic probe of claim 24 wherein said coupler comprises: an antenna comprising an inner conductor of coaxial cable; and a microwave feed line, a portion of which comprises coaxial cable having an inner and outer conductor wherein the inner conductor of the coaxial cable of said antenna, waveguide and microwave feed line are electrically connected to form a three-arm connection.
Claim 27
Dependent Claim
20 words
An electron paramagnetic resonance probe of claim 24 wherein said resonant structure comprises a resonator surrounded by a microwave shield.
Claim 28
Dependent Claim
26 words
An electron paramagnetic resonance probe of claim 24 further comprising: a mixer assembly in connection with a capillary, wherein said capillary extends through said resonant structure.
Claim 29
Dependent Claim
17 words
An electron paramagnetic resonance probe of claim 20 further comprising a protective body surrounding said resonant structure.
References Cited (Backward Citations)
US3119073A
Cited
US3828244A
Cited
US3931569A
Cited
US4437063A
Cited
US4446429A
Cited
US4453147A
Cited
US4933652A
Cited
US5142232A
Cited
US5204628A
Cited
US5184076A
Cited
US5294885A
Cited
US5237299A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 2000-01-28 | 2000-07-29 | 2001-01-28 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2004-01-28 | 2004-07-29 | 2005-01-28 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2008-01-28 | 2008-07-29 | 2009-01-28 | $7700.00 | Window Closed / Lapsed |