Standards for the Management o...

高速PCB设计技术讲座资料 91页 PDF版Standards for the Management of Potential Health Risks of EM Fields
Why measure SAR?
Concern about health effects from radio transmitters aggravated by widespread use of mobile handsets SAR is universally accepted as a measure of energy deposition Many regulatory agencies now require radio transmitters to meet SAR limits

For many years there has been concern on the part of the general public about the possible health effects of exposure to radio frequency (RF) radiation. High levels of RF field are known to cause a variety of physical effects on the human body. Although a relatively small group of radio users and technicians has been exposed by virtue of their occupations for many decades, with the dramatic increase in public use particularly of mobile telephones and latterly other wir