Date of Award

Summer 1965

Document Type

Thesis - Restricted

Degree Name

Master of Science (MS)

Department

Electrical and Computer Engineering

Abstract

Five newly conceived microwave power conversion devices for mechanical power have been investigated. Four of these are working models which show distinct differences in operation even though each employ a DC rectifier circuit, rotor coil and pickup antenna. The fifth device was constructed in an attempt to provide direct conversion of microwave power into mechanical power. In the four indirect conversion devices, the pickup antenna for the microwave power was made to change its sensitivity for the impinging microwave power at some point in rotation of the rotor coil. This was done to provide continuing rotation. In the "microwave motor" the pickup antenna was placed in open air, whereas, in the "waveguide motor" the pickup antenna was placed inside of a waveguide. Control over the rotor coil's speed and its direction of rotation was obtained when the input power, frequency of operation or the turning position of a shorting plunger was changed in the "waveguide motor." Modulating the input power in the "parametric motor" improved the efficiency of operation over the "waveguide motor" device and provided synchronous speed control of the rotor coil in unison with the modulation frequency.

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