Nvidia Corporation

Srirama Murthy Raju Bhupatiraju

Joselito Gavilan

Siddharth Ravichandran

In various examples, radio frequency conducted power of a device&#x2014;such as a human interface device (HID)&#x2014;may be adjusted to account for various operating conditions. For example, when a user holds the device in their hand, the radiated power level of the device may be reduced to a level that reduces transmission performance of the device. To account for this, one or more detection mechanisms may be used to determine whether the device is held in hand and, when determined to be held in hand, the radio frequency conducted power of the device may be increased&#x2014;while complying with regulatory requirements governing wireless transmissions&#x2014;to increase the performance of the device. When not held in hand, the radio frequency conducted power may be less, thereby resulting in consistent performance of the device under varying operating conditions.

Radio frequency power adaptation for handheld wireless devices

Techniques for providing multi-antenna devices with increased antenna-to-antenna isolation as well as methods of operating and manufacturing the same are disclosed. A multi-antenna device may include a support structure, one or more radio devices coupled to a first antenna that is coupled to the support structure at a first location, a second antenna coupled to the support structure at a second location and communicatively coupled to the one or more radio devices, and a conductive structure coupled to the support structure so that it shifts an electric field null of the first antenna from an original location toward the second location during communications using the first antenna, thereby increasing isolation between the first antenna and the second antenna. The conductive structure may have a length of approximately one half of the wavelength (e.g., of 2.4 gigahertz or 5 gigahertz) of a frequency band used for the communications.

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San Jose, CA, United States of America

Srirama Murthy Raju Bhupatiraju