Statistics – Applications
Scientific paper
May 2003
adsabs.harvard.edu/cgi-bin/nph-data_query?bibcode=2003aipc..664..292a&link_type=abstract
BEAMED ENERGY PROPULSION: First International Symposium on Beamed Energy Propulsion. AIP Conference Proceedings, Volume 664, pp
Statistics
Applications
Spaceborne And Space Research Instruments, Apparatus, And Components, Laser Applications, Ion And Plasma Propulsion
Scientific paper
A rectenna has been designed to provide DC energy for the propulsion engines of the Microwave Lightcraft. It uses very high density sub-arrays to convert the microwave energy in a beam of power density 4 kW/cm2 with an efficiency of 56 %. Each sub-array consists of an ensemble of very short dipoles and Schottky diode elements deposited on and within a semiconductor substrate. The substrate sits down on a low-loss wafer carrier which also performs the function of water cooling. The rectenna design permits the periodic reflection and focussing of the beam to maintain a plasma nose-cone in front of the vehicle. In addition, the rectenna is capable of transmitting stored energy to this `air-spike' region to maintain that plasma in the event of a loss of beam power.
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