Space Based Solar Power Radio Interference

Work in progress, may be many errors

Space Power Satellites Bands

Broadband satellite systems typically employ the 27.5-30.0 GHz SHF frequency range for uplink transmissions (earth-to-space) and the 17.7-20.2 GHz range for downlink transmissions (space-to-earth)

Distance from GEO to 45N, 38000 km, 1.8e16 m². 1W EIRP produces 5.5e-17 W/m² or 5.5e-18 mW/cm² at antenna dish.

2GW powersat produces 30mW/cm², 300W/m² an EIRP of 187 dbW on beam. Sidelobe power is 0.01mW/cm² or 0.1 W/m², an EIRP of 153 dBW, and the "floor" is 100nW/cm², 1μW/m², an EIRP of 103 dBW.

I don't know how much we must filter this spike of energy to keep it from degrading a signal. Chances are, a pure tone won't land directly in the signal band, but nonlinearities in LNA and mixer could shift the frequency into the baseband. Let's be very optimistic and assume that we can tolerate a signal or harmonic of the same power as the comsat signal.