Systems and methods for electromagnetic shielding of rotating components
AssigneeMicrosoft Technology Licensing, LLC
InventorsJason A. Harrigan, David Bennett Johnson
Life of this patent
Estimating the term…
Abstract
An EMI attenuation device includes a housing stator, a fan rotor, and an electrical bridge therebetween. The housing stator has an aperture therethrough, and at least a portion of the housing stator is electrically conductive. The fan rotor is adjacent to the aperture and has a rotational axis relative to the housing stator and a proximate surface proximate the housing stator. The fan rotor is electrically conductive, and the proximate surface is continuous around a rotational direction of the fan rotor. The electrical bridge is between the proximate surface of the fan rotor and a contact surface of the housing stator.
Claims20
An electromagnetic interference (EMI) attenuation device comprising:
- a housing stator having an aperture therethrough, wherein at least a portion of the housing stator is electrically conductive;
- a fan rotor adjacent to the aperture and having a rotational axis relative to the housing stator and a proximate surface proximate the housing stator, wherein the fan rotor is electrically conductive and the proximate surface is continuous around a rotational direction of the fan rotor and the fan rotor allows fluid flow through the fan rotor and aperture;
- and
- an electrical bridge between the proximate surface of the fan rotor and a contact surface of the housing stator.
An electronic device comprising:
- a housing;
- a heat source;
- a heat transfer element thermally connected to the heat source to transfer heat from the heat source toward an aperture in the housing;
- and
- an EMI shielding device located proximate the aperture, the EMI shielding device including:
- a stator having the aperture therethrough, wherein at least a portion of the stator is electrically conductive;
- a fan rotor adjacent to the aperture and having a rotational axis relative to the stator and a proximate surface proximate the stator, wherein the fan rotor is electrically conductive and the proximate surface is continuous around a rotational direction of the fan rotor, wherein the fan rotor is configured to exhaust heat from the heat transfer element through the aperture and the fan rotor allows fluid flow through the fan rotor and aperture;
- and
- an electrical bridge between the proximate surface of the fan rotor and a contact surface of the housing stator.
Dependencies are inferred from the claim text.