1. Microwave Power Transmission o Microwave power amplifier (DC-RF converters) design and development. o Microwave power transmission phase control system development. o Microwave power transmitting antenna (subarray) design and development, integrated systems test. o Rectenna electronic component development. o Rectenna structures and construction techniques. 2. Solar Arrays o Solar cell array (blanket) design and materials selection for automated blanket fabrication/production at low cost. o Long-term environmental effects on candidate solar cell array materials to determine radiation (electron/proton) degradation characteristics, UV susceptibility, and plasma interaction with high voltage arrays. o Determine thermal annealing characteristics and, where necessary, develop in-situ annealing techniques such as laser heating devices and self-annealing methods. o Solar reflectors (for concentrated systems). 3. Power Distribution o Investigate spacecraft charging and high voltage interaction. o High voltage (40 to 50 kv) DC switchgear development. o High voltage (40 to 50 kv) electrical cable insulation development. o Rotary joint/slipring development for 30 year life (electromechanical components). o Power processing technology development for electric propulsion systems.
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