Some phones have a SAR of almost 2W/kg, compared to that milliwatts of 10GHz RF ...

05 4 months ago | parent | context | favorite | on: Inside a $1 radar motion sensor

Some phones have a SAR of almost 2W/kg, compared to that milliwatts of 10GHz RF are nothing. Not to mention that with standard energy dissipation formula of E~R^(-2) you're getting into microwatts at any practical distance from the antenna.