GEO with 20,000 km Tether Space Solar Power Concept Summary • GEO satellite with a long (20,000 km) tether acting as a surface waveguide • Tether shortens the transmission distance • This produces a 50% reduction In transmitter diameter -This advantage is independent of frequency - High frequency preferred • The tether provides gravity gradient stabilization Areas of Concern • Deployment of the tether • Stability of tether • Susceptibility to orbital debris/ micrometeoroids • Impact of tether(s) on other spacecraft and transportation systems
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