The dimensions for the transmitting and receiving antennas at 2.45 and 5.8 GHz frequencies are shown in Tables 3 and 4. The beamed power will be limited by the allowable energy density in the microwave beam at the transmitter and rectenna. A Gaussian energy distribution across the beam, if 4 GW were to be transmitted by the reflector, would reach about 56 mW/cm at the transmitter, 100 mW/cm at the rectenna and 120 mW/cm at the reflector not taking into account the beam slant angles that would lower the energy density across the beam. A Gaussian energy distribution results in a higher maximum energy density compared to shaping the beam to approximate a more uniform energy distribution across the beam.
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