Evolution of RF safety standards and their impact on mobile and portable transmitters

Exposure standards currently recommended by international health organizations and under consideration by U.S. Governmental Agencies restrict the occupational exposure to 500 µW/cm²and the environmental (general public) limit to 200 µW/cm²in the band of land mobile frequencies. This paper discusses the options open to the manufacturers and the designers of mobile and personal transmitters in this rapidly changing regulatory scenario.