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The theory of an auto-resonant field emission cathode relativistic electron accelerator for high efficiency microwave to direct current power conversionA novel method of microwave power conversion to direct current is discussed that relies on a modification of well known resonant linear relativistic electron accelerator techniques. An analysis is presented that shows how, by establishing a 'slow' electromagnetic field in a waveguide, electrons liberated from an array of field emission cathodes, are resonantly accelerated to several times their rest energy, thus establishing an electric current over a large potential difference. Such an approach is not limited to the relatively low frequencies that characterize the operation of rectennas, and can, with appropriate waveguide and slow wave structure design, be employed in the 300 to 600 GHz range where much smaller transmitting and receiving antennas are needed.
Document ID
Document Type
Conference Paper
Manning, Robert M.
(NASA Lewis Research Center Cleveland, OH, United States)
Date Acquired
September 6, 2013
Publication Date
April 1, 1990
Publication Information
Publication: Vision-21: Space Travel for the Next Millennium
Subject Category
Spacecraft Propulsion And Power
Accession Number
Distribution Limits
Work of the US Gov. Public Use Permitted.
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