If a given area is covered by many distributed antenna elements rather than a single antenna, then the total radiated power is reduced by approximately a factor "N""1–n/2" and the power per antenna is reduced by a factor "N""n/2" where a simple power-law path-loss model with path-loss exponent "n" is assumed. As an alternative, the total area covered could be extended for a given limit of effective radiated power, which may be important to ensure compliance with safety limits on radiation into the human body.