Slayden Grubert Beard PLLC
Proximity detection using an antenna and directional coupler switch
Detection of an increase in a mismatch of an antenna of a radio frequency (RF) device and/or a change in a capacitance value of the antenna indicates proximity of a body to the antenna. Upon detection of proximity of a body to the antenna, reduction of transmit power of the RF device may be done to meet Specific Absorption Rate (SAR) level regulations.
MICROCHIP TECHNOLOGY INCORPORATED
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