The maximum received power is the incident co-polarized power density times the effective aperture Ae of the receive antenna: This assumes that the receive antenna is co-polarized with the incide...The maximum received power is the incident co-polarized power density times the effective aperture Ae of the receive antenna: This assumes that the receive antenna is co-polarized with the incident electric field, and that the receiver is conjugate-matched to the antenna. A common misconception is that path loss is equal to the reduction in power density due to spreading along the path between antennas, and therefore this “spreading loss” increases with frequency.
