Effective Isotropically Radiated Power

Output Measurement

Testing in an anechoic chamber provides the actual data needed to verify the radio performance. The effective isotropically radiated power is calculated by adding the measured gain of the antenna to the power measured at the antenna port.

Antenna Gain

Focusing energy in one direction increases the effective range of the device without increasing the battery drain. High values for effective isotropically radiated power result from high gain antennas that direct the signal toward the receiver.

Regulatory Limit

National agencies enforce maximum levels for the energy emitted by a transmitter to protect the spectral environment. If the effective isotropically radiated power exceeds these limits, the integrator must reduce the conducted output power of the radio module.