Regulatory and safety considerations for indoor RF

RF Exposure Limits for Indoor Systems

Indoor wireless systems must comply with RF exposure safety standards set by regulatory bodies. The FCC in the United States enforces maximum permissible exposure limits based on specific absorption rate for devices near the body and power density for environmental exposure. ICNIRP guidelines used in most other countries set similar thresholds. For indoor DAS and small cells, the critical metric is power density at locations accessible to the general public. At typical indoor antenna power levels of zero to twenty dBm, compliance distances are usually less than twenty centimeters from the…