LIST OF FIGURES Figure Page 1 SPS Reference System Concept 3 2 Simplified Diagram of SPS Concept Development 5 and Evaluation Methodology 3 Solar Power Satellite 7 4 SPS Reference System - Satellite Configuration 12 5 SPS Efficiency Chain (GaAlAs CR2 and Si CR1) 13 6 SPS Operations 15 7 Reference System Characteristics 16 8 Solar Cell Options for SPS 18 9 Laser Annealing Concept 18 10 Solar Cell Blanket Support 20 11 SPS Power Distribution 21 12 Antenna Yoke and Turntable 23 13 Attitude Control System Characteristics 24 14 Transmitting Antenna Functional Description 26 15 Microwave Power Transmission System Parameters 27 16 Microwave Power Transmission System 31 17 Microwave Array Power Distribution 32 18 Power Density at Rectenna as a Function of 33 Distance from Boresight 19 Peak Power Density Levels as a Function of Range 35 from Rectenna 20 Grating Lobe Characteristics 36 21 Grating Lobe Maxima 38 22 Peak Power Density for Sidelobes and Grating 39 Lobe as a Function of Range from Rectenna 23 Near-Field Antenna Pattern 40 24 Rectenna Patterns and Power Levels 42 25 Microwave Transmission Efficiency 44 26 Noise Power Density of Ground for a 1 km, 5 GW 46 SPS Antenna
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