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Title: Variable frequency microwave furnace system

A variable frequency microwave furnace system designed to allow modulation of the frequency of the microwaves introduced into a furnace cavity for testing or other selected applications. The variable frequency microwave furnace system includes a microwave signal generator or microwave voltage-controlled oscillator for generating a low-power microwave signal for input to the microwave furnace. A first amplifier may be provided to amplify the magnitude of the signal output from the microwave signal generator or the microwave voltage-controlled oscillator. A second amplifier is provided for processing the signal output by the first amplifier. The second amplifier outputs the microwave signal input to the furnace cavity. In the preferred embodiment, the second amplifier is a traveling-wave tube (TWT). A power supply is provided for operation of the second amplifier. A directional coupler is provided for detecting the direction of a signal and further directing the signal depending on the detected direction. A first power meter is provided for measuring the power delivered to the microwave furnace. A second power meter detects the magnitude of reflected power. Reflected power is dissipated in the reflected power load. 5 figs.
Inventors:
;
Issue Date:
OSTI Identifier:
7106824
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) PTO; EDB-94-103126
Patent Number(s):
US 5321222; A
Application Number:
PPN: US 7-792103
Contract Number:
AC05-84OR21400
Resource Relation:
Patent File Date: 14 Nov 1991
Country of Publication:
United States
Language:
English
Subject:
42 ENGINEERING; MICROWAVE OVENS; DESIGN; FREQUENCY MODULATION; MICROWAVE AMPLIFIERS; MICROWAVE RADIATION; OPERATION; USES; AMPLIFIERS; APPLIANCES; ELECTROMAGNETIC RADIATION; ELECTRONIC EQUIPMENT; EQUIPMENT; MICROWAVE EQUIPMENT; MODULATION; OVENS; RADIATIONS; 421000* - Engineering- Combustion Systems