High power high frequency loads for energy recovery
AssigneeCern - European Organization for Nuclear Research
InventorsSilke Federmann, Fritz Caspers, Michael Betz
Life of this patent
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Abstract
A radio frequency load for absorbing a radio frequency wave having a frequency in a predetermined frequency band and a wavelength comprises a waveguide with a portion having an opening for said radio frequency wave. In addition, the radio frequency load comprises at least one metal rod provided in said waveguide, said at least one metal rod having a length of one-half of said wavelength to damp said radio frequency wave.
Claims38
A radio frequency load for absorbing a radio frequency wave having a frequency in a predetermined frequency band and a wavelength λ, said radio frequency load comprising:
- a waveguide with a portion having an opening for said radio frequency wave;
- and
- at least one metal rod provided in said waveguide, said at least one metal rod having a length (L) of one-half of said wavelength λ to damp said radio frequency wave, wherein said waveguide comprises a coaxial shape with an inner conductor and an outer conductor, and wherein said at least one metal rod being arranged along an axial direction of said coaxial transmission line.
A radio frequency load for absorbing a radio frequency wave having a frequency in a predetermined frequency band and a wavelength λ, said radio frequency load comprising:
- a coaxial transmission line with a portion having an opening for said radio frequency wave, said coaxial transmission line comprising an inner conductor, an outer conductor, and a conductive plate arranged on an opposite side to the opening to short said inner and outer conductor;
- and
- one or more metal structures being arranged between said inner conductor and said outer conductor, said one or more metal structures are arranged in a predetermined distance from the metal plate to damp said radio frequency wave, wherein said coaxial transmission line comprises a coaxial shape, and wherein said one or more metal structures are arranged along an axial direction of said coaxial transmission line.
A radio frequency load for absorbing a radio frequency wave having a frequency in a predetermined frequency band and a wavelength λ, said radio frequency load comprising:
- an absorption portion having an opening for said radio frequency wave;
- an inlet structure and a terminating surface to provide a resonator for said radio frequency wave;
- and
- a plurality of absorber elements arranged between said inlet structure and said terminating surface and which are configured to damp said radio frequency wave, wherein the absorption portion, the inlet structure, and the terminating surface form a waveguide that has a coaxial shape, and wherein said plurality of absorber elements are arranged along an axial direction of said waveguide.
A radio frequency load for absorbing a radio frequency wave having a frequency in a predetermined frequency band and a wavelength λ, said radio frequency load comprising:
- an enclosure with an opening for said radio frequency wave;
- ceramic foam arranged inside said enclosure such that said radio frequency wave along its propagation passes at least partly said ceramic foam;
- and
- a cooling gas inlet configured to provide said cooling gas as cooling medium to said ceramic foam,
- wherein said ceramic foam is configured to absorb said radio frequency wave and is configured to be permeable for said cooling gas to cool said ceramic foam, wherein said enclosure comprises a waveguide having a coaxial shape, and wherein the ceramic foam is arranged along an axial direction of said waveguide.
Dependencies are inferred from the claim text.