05521360 is referenced by 88 patents and cites 21 patents.

A variable frequency microwave heating apparatus (10) designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity (34) for testing or other selected applications. The variable frequency heating apparatus (10) is used in the method of the present invention to monitor the resonant processing frequency within the furnace cavity (34) depending upon the material, including the state thereof, from which the workpiece (36) is fabricated. The variable frequency microwave heating apparatus (10) includes a microwave signal generator (12) and a high-power microwave amplifier (20) or a microwave voltage-controlled 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).

Title
Apparatus and method for microwave processing of materials
Application Number
8/306305
Publication Number
5521360
Application Date
September 14, 1994
Publication Date
May 28, 1996
Inventor
Robert J Markunas
Chapel Hill
NC, US
Don W Bible
Clinton
TN, US
Robert J Lauf
Oak Ridge
TN, US
Arvid C Johnson
Lake in the Hills
IL, US
Agent
H W Adams
J M Spicer
Jeffrey N Cutler
Assignee
Martin Marietta Energy Systems
TN, US
IPC
H05B 6/68
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