Electric heating – Microwave heating – With control system
Patent
1995-03-30
1999-10-05
Leung, Philip H.
Electric heating
Microwave heating
With control system
219716, 219717, 219761, H05B 668
Patent
active
059618710
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).
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Bible Don W.
Johnson Arvid C.
Lauf Robert J.
Thigpen Larry T.
Leung Philip H.
Lockheed Martin Energy Research Corporation
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