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Title: Variable frequency microwave heating apparatus

Abstract

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).

Inventors:
 [1];  [2];  [3];  [4]
  1. Clinton, TN
  2. Oak Ridge, TN
  3. Lake in the Hills, IL
  4. Angier, NC
Issue Date:
Research Org.:
Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
OSTI Identifier:
872562
Patent Number(s):
5961871
Assignee:
Lockheed Martin Energy Research Corporation (Oak Ridge, TN)
Patent Classifications (CPCs):
Y - NEW / CROSS SECTIONAL TECHNOLOGIES Y02 - TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE Y02B - CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
H - ELECTRICITY H05 - ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR H05B - ELECTRIC HEATING
DOE Contract Number:  
AC05-84OR21400
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
variable; frequency; microwave; heating; apparatus; 10; designed; allow; modulation; microwaves; introduced; multi-mode; cavity; 34; testing; selected; applications; signal; generator; 12; high-power; amplifier; 20; oscillator; 14; power; supply; 22; provided; operation; directional; coupler; 24; detecting; direction; amplitude; signals; incident; reflected; meter; 30; measuring; delivered; furnace; 32; 26; detects; magnitude; dissipated; load; 28; high-power microwave; microwaves introduced; allow modulation; power load; directional coupler; microwave signal; frequency microwave; variable frequency; power supply; microwave cavity; signal generator; microwave heating; power meter; power delivered; microwave amplifier; reflected power; heating apparatus; microwave furnace; power microwave; wave signal; selected applications; microwave oscillator; multi-mode microwave; -mode microwave; wave cavity; /219/

Citation Formats

Bible, Don W, Lauf, Robert J, Johnson, Arvid C, and Thigpen, Larry T. Variable frequency microwave heating apparatus. United States: N. p., 1999. Web.
Bible, Don W, Lauf, Robert J, Johnson, Arvid C, & Thigpen, Larry T. Variable frequency microwave heating apparatus. United States.
Bible, Don W, Lauf, Robert J, Johnson, Arvid C, and Thigpen, Larry T. Fri . "Variable frequency microwave heating apparatus". United States. https://www.osti.gov/servlets/purl/872562.
@article{osti_872562,
title = {Variable frequency microwave heating apparatus},
author = {Bible, Don W and Lauf, Robert J and Johnson, Arvid C and Thigpen, Larry T},
abstractNote = {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).},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1999},
month = {1}
}

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Works referenced in this record:

Accelerated imidization reactions using microwave radiation
journal, July 1992


Frequency Agile Sources for Microwave Ovens
journal, January 1979


Use of Sheath Heiix Slow-wave Structure as an Applicator in Microwave Heating Systems
journal, January 1981