Information handling system radio transmit power management
AssigneeDell Products L.P.
InventorChing Wei Chang
Life of this patent
Estimating the term…
Abstract
An information handling system transceiver adjusts power levels for transmitting wireless signals to maintain specific absorption constraints by estimating the type of material proximate an antenna and applying the estimated material to adjust transmit power levels. When the capacitive response of an object in proximity to the antenna indicates an inanimate object, such as a desktop surface or a portion of a housing, the power level may be maintained at a high setting and remain within specific absorption constraints.
Claims20
An information handling system comprising:
- a lid housing portion;
- a main housing portion;
- a hinge rotationally coupling the housing portion and main housing portion to rotate from a closed position for substantially 360 degrees to a tablet position;
- a display integrated in the lid housing portion;
- processing components disposed in the main housing portion, the processing components operable to process information and including at least a transceiver that transmits wireless signals;
- one or more antenna disposed in the main housing portion and interfaced with the transceiver to transmit the wireless signals;
- and
- a proximity sensor interfaced with transceiver and operable to detect a capacitance proximate the one or more antenna, estimate a material associated with the capacitance, and manage transmission power at the transceiver based at least in part upon the estimate of the material.
A method for managing wireless signal power transmission from an information handling system antenna, the method comprising:
- detecting changes in capacitance proximate the antenna with a capacitive response of a capacitive proximity sensor;
- estimating a material type associated with the changes in capacitance;
- and
- adjusting wireless signal transmission power based at least in part upon the estimated material type.
A radio comprising:
- a transceiver operable to transmit wireless signals at plural power levels;
- first and second antenna interfaced with the transceiver and operable to transmit the wireless signals;
- a parasitic element disposed between the first and second antenna and operable to isolate the first and second antenna from each other;
- and
- a proximity sensor interfaced with at least one antenna and the parasitic element, the proximity sensor estimating a material type of an object proximate the at least one antenna and parasitic element and applying the estimated material type to manage the power level of the transceiver to transmit the wireless signals.
Dependencies are inferred from the claim text.