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Variable frequency microwave heating apparatus

United States Patent

5,961,871
October 5, 1999
View the Complete Patent at the US Patent & Trademark Office
Oak Ridge National Laboratory - Visit the Partnerships Directorate Website
A variable frequency microwave heating apparatus (10) designed to allow modulation of the frequency of the microwaves introduced into a multi-mode microwave cavity (34) for testing or other selected applications. The variable frequency microwave heating apparatus (10) includes a microwave signal generator (12) and a high-power microwave amplifier (20) or a high-power microwave oscillator (14). A power supply (22) is provided for operation of the high-power microwave oscillator (14) or microwave amplifier (20). A directional coupler (24) is provided for detecting the direction and amplitude of signals incident upon and reflected from the microwave cavity (34). A first power meter (30) is provided for measuring the power delivered to the microwave furnace (32). A second power meter (26) detects the magnitude of reflected power. Reflected power is dissipated in the reflected power load (28).
Bible; Don W. (Clinton, TN), Lauf; Robert J. (Oak Ridge, TN), Johnson; Arvid C. (Lake in the Hills, IL), Thigpen; Larry T. (Angier, NC)
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
08/ 413,608
March 30, 1995
This invention was made with Government support under Contract No. DE-AC05-840R21400 awarded by the U.S. Department of Energy to Martin Marietta Energy Systems, Inc. and the Government has certain rights in this invention.