- Patent Title: Proximity detection using an antenna and directional coupler switch
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Application No.: US13765441Application Date: 2013-02-12
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Publication No.: US09144051B2Publication Date: 2015-09-22
- Inventor: Dieter Peter
- Applicant: Microchip Technology Incorporated
- Applicant Address: US AZ Chandler
- Assignee: MICROCHIP TECHNOLOGY INCORPORATED
- Current Assignee: MICROCHIP TECHNOLOGY INCORPORATED
- Current Assignee Address: US AZ Chandler
- Agency: Slayden Grubert Beard PLLC
- Main IPC: H04B7/10
- IPC: H04B7/10 ; H04W64/00 ; H01Q1/50 ; G01R27/26 ; H04B1/3827 ; H03K17/955
Abstract:
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.
Public/Granted literature
- US20130210477A1 Proximity Detection Using an Antenna and Directional Coupler Switch Public/Granted day:2013-08-15
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