EPR microwave cavity for small magnet airgaps
US10353027B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Mar 8, 2016 |
| Grant date | Jul 16, 2019 |
| Priority date | — |
| Expiry date | Dec 25, 2036 |
Classification
- Technology area (CPC H)Electricity
- CPC primaryH01P7/10
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microwave resonator for an EPR probe head has a metal cavity body (1) supporting an electromagnetic microwave resonance mode. The metal cavity body (1) has an opening for inserting a sample tube (2) to a center position of the resonator. The center of the opening and the center position of the resonator define an x-axis. The cavity body also has an opening for transmitting microwave radiation into the resonator. Two dielectric elements (4a, 4b) are located symmetrically to the E-field nodal plane containing the x-axis and a z-axis perpendicular to the x-axis. Each dielectric element is geometrically formed and positioned such that it provides an equal overlap with a local maximum of the microwave electric field energy. The microwave resonant cavity has a thin planar shape and the resonator is loaded with two dielectric elements, placed symmetrically relative to the central EPR sample.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.