Patent ID: 9614561
Date: 2017-04-04
CPC Classifications: H04B,H04W,Y02D

Claim:
1. A circuit for a portable electronic device, comprising: an antenna element disposed inside the electronic device; a radio frequency energy detector coupled to the antenna element that provides an output which corresponds to a level of radio frequency coupled energy received by the antenna element; a threshold detector coupled to the radio frequency energy detector that asserts an output while the level of radio frequency coupled energy received by the antenna element, as indicated by the output of the radio frequency energy detector, is above a first pre-selected threshold indicating exposure of the portable electronic device to radio frequency interference (RFI), and wherein the RFI is known to corrupt or alter data signal states of a component of the portable electronic device; and a controller that is responsive to the output of the threshold detector, and transitions from an inactive state to an active state to perform RFI mitigation wherein the output of the threshold detector is asserted to refresh the component of the electronic device while the output of the threshold detector is asserted, and the controller transitions back to the inactive state upon completion of the RFI mitigation, thereby ensuring that the component is protected from the exposure of the portable electronic device to the RFI, while also conserving battery power to the portable electronic device.